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SUMMARY:2020 Ocean Sciences Meeting 
DESCRIPTION:2020 Ocean Sciences Meeting Dates: 16-21 February 2020Location: San Diego\, California\, USA. \n\n\n\nFor more information: https://www2.agu.org/ocean-sciences-meeting \n\n\n\nGEOTRACES and GEOTRACES related sessions: \n\n\n\nRevealing Biogeochemical Processes on Basin Scales through Ocean TransectsSession ID#: CT008https://agu.confex.com/agu/osm20/prelim.cgi/Session/84582 \n\n\n\nBiogeochemical processes that affect the cycling of trace elements and their isotopes\, as well as carbon\, macronutrients and other constituents\, are studied using two basic field strategies: sampling at a fixed station or regime to measure rates and examine specific processes\, or transects on up to basin scales. Each has its strengths and weaknesses\, but transects can gather a broad sweep of information on a relatively short time scale that can then be used to develop a more specific process-oriented approach. Indeed\, the GEOSECS program of the 1970’s used the transect approach\, and currently the GO-SHIP/Repeat Hydrography and international GEOTRACES programs feature long ocean transects. This session will highlight biogeochemical processes revealed on basin transects that affect trace constituents such as trace elements and isotopes\, as well as organic constituents\, including carbon and macronutrients. It will also focus on sampling and data analysis methods applied to sampling across basins\, and biogeochemical modeling studies that integrate data from long transects into their analyses. \n\n\n\nPrimary Chair: Gregory A Cutter\, Old Dominion University. \n\n\n\nCo-chairs: Phoebe J Lam\, University of California Santa Cruz;  Karen L Casciotti\, Stanford University; Rob Middag\, Royal Netherlands Institute for Sea Research. \n\n\n\nLinking the biology\, geochemistry\, and circulation of the Gulf of MexicoSession ID#: OB015https://agu.confex.com/agu/osm20/prelim.cgi/Session/84432 \n\n\n\nSession Description: \n\n\n\nThe Gulf of Mexico is a small\, dynamic marginal sea that supports a broad range of oceanographic environments\, including eutrophic coastal systems\, oligotrophic open ocean waters\, hydrocarbon-impacted waters and sediments\, and shelf waters that are susceptible to frequent harmful algal blooms. Large atmospheric\, riverine\, and submarine groundwater fluxes strongly influence the biogeochemistry of near-shore and open ocean waters\, yielding a high degree of spatial and temporal variability. Several recent studies have focused on characterizing the biogeochemistry of the Gulf of Mexico using a range of interdisciplinary approaches. Following on a successful 2018 OSM Town Hall led by GEOTRACES and OCB\, this session will bring together interested investigators to highlight new results from the Gulf and identify potential areas of common interest and collaborative opportunities to help inform future planning in GEOTRACES\, OCB\, and other relevant programs. We invite contributions that characterize the variability in the biology\, geochemistry\, and/or physical oceanography of the Gulf of Mexico\, and especially the linkages between them. Suggested contributions may include\, but are not limited to descriptions of water column and benthic geochemical distributions\, biogeochemical rate measurements\, characterizations of molecular ecology\, geochemical fluxes\, and descriptions of circulation that impact Gulf biogeochemical dynamics. \n\n\n\nPrimary Chair: Angela N Knapp\, Florida State University. \n\n\n\nCo-chairs: Alan M Shiller\, University of Southern Mississippi; Heather M Benway\, Woods Hole Oceanographic Inst.; Juan Carlos Herguera\, Center for Scientific Research and Higher Education at Ensenada. \n\n\n\nControls on trace metal biogeochemistry and physicochemical speciation in seawaterSession ID#: CT004https://agu.confex.com/agu/osm20/prelim.cgi/Session/85790 \n\n\n\nSession Description: \n\n\n\nTrace metals function as essential micronutrients and pollutants in the ocean. Organic complexation\, size partitioning\, and redox changes of trace elements can be mediated by biological processes including uptake\, regeneration\, cell lysis\, and organic ligand production. Additional processes influencing the production\, degradation\, and composition of organic matter also play an important role in controlling trace metal distributions\, and both vary across environments (e.g. estuaries\, open ocean\, air-sea-sediment interfaces\, hydrothermal systems). In turn\, resulting changes in bioavailability and cycling of trace elements governs the function and composition of marine phytoplankton communities. Recent efforts\, particularly within GEOTRACES\, have expanded the database of trace metal concentrations and physicochemical speciation. This session seeks to link our understanding of biology\, organic matter\, and trace metal chemistry from molecular to basin-wide scales\, from studies related to biologically-mediated transformations of trace elements to the wider processes controlling metal distributions\, size partitioning\, and fluxes. We welcome submissions highlighting how marine organisms influence the physicochemical speciation of trace elements in seawater\, and how changes in trace element chemistry impact the structure and function of marine ecosystems. In addition to observational\, experimental and modelling studies\, we also invite contributions on the production\, degradation\, and characterization of metal-binding compounds and colloids. \n\n\n\nPrimary Chair: Hannah Whitby\, IUEM Institut Universitaire Européen de la Mer. \n\n\n\nCo-chairs: Randelle M Bundy\, University of Washington; Jessica N Fitzsimmons\, Texas A & M University College Station; Andrea Koschinsky\, Jacobs University Bremen. \n\n\n\nBiogeochemical cycles in oxygen minimum zones: mechanisms\, drivers\, and changeSession ID#: CT001https://agu.confex.com/agu/osm20/prelim.cgi/Session/85226 \n\n\n\nSession Description: \n\n\n\nOxygen minimum zones in the coastal and open ocean are spatially expanding and intensifying\, with model projections showing continued O2 loss in the future. These regions play a fundamental role in the biogeochemical cycles of elements such as carbon\, nitrogen and sulfur as well as trace elements\, host microbial communities with diverse metabolic pathways\, and act as significant sources and sinks of nutrients and climatically relevant (greenhouse) gases. Yet\, significant questions on the nature\, drivers and variability of these processes remain. This session aims to build a comprehensive view of oxygen minimum zone biogeochemistry\, by inviting researchers who apply a variety of approaches to these problems\, from field and laboratory measurements\, to -omics based studies\, to observational synthesis and numerical models. Specifically\, we invite submissions investigating: (1) the distribution\, speciation and transformation of macronutrients (N\, P\, Si)\, trace metals (e.g. Mn\, Fe\, Co\, Ni\, Cu\, Zn\, Cd)\, redox-active elements (e.g. S\, Cr\, Mo\, I) and their isotopes; (2) microbial interactions and their impacts on biogeochemical cycles; (3) processes occurring in and around particle-associated microenvironments\, and (4) the physical drivers and variability of these processes. Studies assessing regional or global impacts with large/new datasets\, e.g. from international programs such as GEOTRACES\, and integrative approaches combining modeling\, field/laboratory measurements\, and/or microbial and molecular approaches are especially encouraged. \n\n\n\nPrimary Chair: David Janssen\, University of Bern. \n\n\n\nCo-chairs: Daniele Bianchi\, University of California Los Angeles; Thomas S Weber\, University of Rochester. \n\n\n\nCT003 – Chemical Speciation and Biogeochemistry in a Changing OceanSession ID#: CT003https://agu.confex.com/agu/osm20/prelim.cgi/Session/85778 \n\n\n\nSession Description: \n\n\n\nHow is seawater chemistry responding to global change processes\, and what are the consequences for marine ecosystems? How do advances in our understanding of chemical speciation give new mechanistic insight into biogeochemical processes? The thermodynamics of solution chemistry in addition to the distribution of trace metals and organic complexes along a gradient of particle sizes and ephemeral clusters are the focus of our session. Although solution thermodynamics is a relatively mature field\, there is an upsurge of research on both measurement and modelling of chemical speciation and an increasing focus on the assessment of uncertainties. This session will also explore interactions between solid and soluble species\, focusing on how recent developments examining the continuum between solid and dissolved (colloids\, nanoparticles\, etc.) alter our paradigm view of element cycling. The transport and reactivity of these ‘in-between’ species may differ from their fully dissolved or solid counterparts\, yet they are the most difficult to sample and observe. We invite submissions pertaining to the measurement and modelling of chemical speciation; assessment of modelling uncertainties; abiotic and biotic transformations from the solid to soluble phase and back again; reactions at the solid-solution interface; trace metal binding environments; sediment-seawater relationships; and interpretation of paleo records. \n\n\n\nPrimary Chair: David R Turner\, University of Gothenburg. \n\n\n\nCo-chairs: Veronique Oldham\, University of Delaware; Sylvia Sander\, IAEA; Emily R Estes\, WHOI. \n\n\n\nAutonomous observing systems for macronutrients and bioactive trace metals in coastal and open ocean settings: present status\, challenges and emerging technologiesSession ID#: IS003https://agu.confex.com/agu/osm20/prelim.cgi/Session/84800 \n\n\n\nSession Description: \n\n\n\nProgress and discovery in the understanding and modeling of biological productivity and species composition in the marine environment is limited by our ability to make macronutrient and bioactive trace metal measurements at relevant spatial and temporal scales. While significant progress has been made with the advent of UV and microfluidic nitrate sensors\, there are still few analytical systems for other important macronutrient species (P\, Si\, NH3) and virtually none for bioactive trace metals that can be deployed on the expanding array of platforms dedicated to long term unattended data gathering (i.e.\, moorings\, gliders\, profilers)\, particularly in oligotrophic surface ocean settings. \n\n\n\nThis session aims to: (1) highlight the latest developments in macronutrient and bioactive trace metal analytical methodologies with strong potential or demonstrated capabilities for unattended operation in coastal and open ocean settings and\, (2) serve as a forum to nurture collaborations among sensor developers and oceanographers with an engineering and analytical chemistry inclination. Contributions from all stages of development are encouraged including: remote samplers\, passive samplers\, reagent-based microfluidic analyzers including the use of novel chemical probes\, electrochemical methods\, optical sensors\, as well as the optimization\, calibration\, and field validation of emerging in situ technologies. \n\n\n\nPrimary Chair: Maxime Grand\, Moss Landing Marine Laboratories. \n\n\n\nCo-chairs: Andrew R Bowie\, University of Tasmania; Agathe Laes-Huon\, IFREMER; Alexander Beaton\, National Oceanography Center\, Soton. \n\n\n\nTowards BioGeoSCAPES: Exploring molecular drivers of ocean metabolism and biogeochemistrySession ID#: OB030https://agu.confex.com/agu/osm20/prelim.cgi/Session/84717 \n\n\n\nBioGeoSCAPES has been proposed as an idea for a new international coordinated research program to integrate knowledge on organism identity and physiology within frameworks of community ecology and global ocean biogeochemistry. It is envisioned that an improved\, predictive\, and quantitative understanding of ocean metabolism can be developed by combining detailed information on cell status\, biochemical processes\, and species interactions with intercalibrated measurements of nutrient fluxes and concentrations. We invite contributions describing research that can serve as inspiration for this nascent program. Appropriate abstracts could include: studies that integrate molecular and biogeochemical measurements\, including fluxes; research that places ‘omics observations (e.g.\, genomic\, transcriptomic\, proteomic\, metabolomic\, metallomic\, lipidomic\, etc.) within quantitative numerical modeling frameworks; or studies that scale from the cellular to the ecosystem level through integrated field measurements or mechanistic models of interactions. The aim of this session is to highlight research that combines informatics\, modeling\, and biogeochemical measurements across scales of time and space\, to test\, integrate\, connect\, and expand upon studies of ocean ecology and metabolism. \n\n\n\nPrimary Chair: Benjamin S Twining\, Bigelow Lab for Ocean Sciences. \n\n\n\nCo-chairs: Erin Marie Bertrand\, Dalhousie University; Martha Gledhill\, GEOMAR Helmholtz Centre for Ocean Research; Naomi Marcil Levine\, University of Southern California. \n\n\n\nThe role of micronutrient cycles in global-scale dynamicsSession ID#: CT010https://agu.confex.com/agu/osm20/prelim.cgi/Session/85400 \n\n\n\nSession Description: \n\n\n\nVia their fundamental control on ocean productivity and the biological carbon pump\, the cycling of nutrients plays an integral role in the dynamics of atmospheric CO2 and climate. In contrast to the ‘big three’- nitrogen\, phosphorus and silicon\, with their well characterised modern distributions and relatively stable inventories\, micronutrients\, such as iron\, remain relatively poorly observed and have the potential for rapid and profound changes in their inventories and biological availability in response to a host of poorly constrained processes. Micronutrients are currently the ‘wild card’ in both past and future carbon cycle and climate change\, prompting the need for improved understanding of their role in Earth system dynamics. We invite a broad range of submissions to provide insights into the pieces of the puzzle\, addressing boundary inputs and sinks\, exchanges between dissolved and solid phases\, interactions with organic compounds\, and their reciprocal interactions with microbial ecosystems. Submissions may include observations\, data synthesis or models\, and may address ocean nutrient cycling over a range of time-scales\, from past (paleo) through contemporary\, and/or in response to future global change. We particularly encourage new insights into the role of feedbacks and the role micronutrient cycles play in shaping global-scale dynamics. \n\n\n\nPrimary Chair: Andy Ridgwell\, University of California Riverside. \n\n\n\nCo-Chair: Alessandro Tagliabue\, University of Liverpool \n\n\n\nUnderstanding Rare Earth Element (REE) distributions and isotopic ratios and the mechanisms behind their use as tracers of (paleo)oceanic processesSession ID#: CT011https://agu.confex.com/agu/osm20/prelim.cgi/Session/84457 \n\n\n\nAnalytical advances have enabled a significant increase of environmental REE abundance and isotopic (e.g. Nd\, Ce) data. These elements are increasingly recognized as promising tracers for elucidating past and present natural and man-made processes in a variety of aquatic environments. However\, in spite of this growth in observations\, our understanding of the mechanisms\, capabilities and limitations of geochemical proxies based on REE abundances and isotopic ratios remains incomplete. We therefore invite presentations of field\, laboratory\, or modeling studies of REEs and related isotope systems aimed specifically at exploring mechanistic connections between their geochemical behavior and observed distributions in marine and terrestrial waters and sediments. Of particular interest are investigations linking REE abundance distributions to Nd or Ce isotopic ratios; validating the use of REEs as proxies of paleoceanographic processes; and addressing REE fractionation and source-to-sink transport on a global scale and at “geochemical hotspots” like estuaries\, hydrothermal vents\, nepheloid layers etc. Presentations that merely contribute TEI distribution data will be given lower priority. We especially encourage submissions from students and early-career scientists. \n\n\n\nPrimary Chair: Brian A Haley\, Oregon State University \n\n\n\nCo-chairs: Torben Stichel\, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven; Johan Schijf\, University of Maryland Center for Environmental Science; Vanessa Hatje\, Universidade Federal da Bahia.
URL:https://www.geotraces.org/event/2020-ocean-sciences-meeting/
LOCATION:San Diego Convention Center\, San Diego\, CA\, United States
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20190818
DTEND;VALUE=DATE:20190824
DTSTAMP:20260424T135128
CREATED:20190117T095920Z
LAST-MODIFIED:20190117T095920Z
UID:2103-1566086400-1566604799@www.geotraces.org
SUMMARY:Goldschmidt 2019
DESCRIPTION:Goldschmidt 2019Dates: 18 – 23 August 2018Location: Barcelona \nFor further information: https://goldschmidt.info/2019/ \nAbstract submission deadline: 29 March 2019 \nGEOTRACES sessions: \n \n10c: Arctic and sub-Arctic Processes: Understanding Changing Ocean Circulation and Biogeochemistry \nConveners: Núria Casacuberta\, Michael Karcher\, John Smith\, Lauren Kipp\, Christian März\, Robyn Tuerena \nResearch in the context of GEOTRACES and beyond has shown the value of using chemical tracers in seawater for documenting and understanding transient ocean processes. Tracer applications in ocean models have provided significant additional insights into physical oceanography and fostered the improvement of ocean models. Natural and anthropogenic tracers such as radionuclides\, gas tracers\, oxygen isotopes\, DOM\, etc. can facilitate a better understanding of circulation and mixing in high latitude regimes. With a focus on the Arctic Ocean and its adjacent seas we invite contributions dealing with chemical tracers as tools for investigations on the circulation within and exchanges between the Arctic and sub-Arctic Seas\, including the northern Atlantic and Pacific oceans. We encourage contributions on large-scale processes occurring over annual to decadal time scales\, that provide insight into dispersion pathways in the Arctic and sub-Arctic seas and tele-connections between Arctic circulation and the Meridional Overturning Circulation via the Arctic Loop Current. We especially encourage contributions combining modelling with tracer measurements. Questions to be addressed may include: • What can be learned about circulation and modification of water masses in the northern oceans based on tracer observations and modelling? • What are the elements of water mass dispersion that appear to be stable over timescales of years to decades\, and which are changing? • What are the governing physics and bio-geochemistry factors? • What are the most promising new tracers for the Arctic domain? • How can collaboration between observational tracer science and modelling be improved? \n10j: Biogeochemical Cycles of Low Oxygen Zones and their Response to Ocean Deoxygenation  \nConveners: Nicole Bale\, Darci Rush\, Ruifang Xie\, Tim Conway\, Insa Rapp\, Laura Bristow \nKeynote: Caroline Slomp (Utrecht University) \nObservations in the past decades have confirmed steadily declining dissolved oxygen concentrations in the subsurface oceans including coastal systems (coastal hypoxia) and open ocean oxygen minimum zones. Future expansion and spread of oxygen deficient zones in the ocean is predicted as a consequence of climate change\, and will result in major changes to marine biogeochemical cycles. These changes will impact sources and sinks of nitrogen\, phosphorus\, sulfur and redox-sensitive trace metals in the oceans\, with global effects on the biota that utilize these elements. This session seeks to bring together geochemical\, biological and physical scientists working on present and past low-oxygen environments\, in order to gain an integrated view of biogeochemistry in these systems. We thus invite submissions of field\, experimental and modelling studies focusing on major nutrients\, trace elements\, dissolved gases\, microbial ecology\, molecular biomarkers\, productivity and physical drivers in these systems. We encourage submissions focusing on (1) the distribution\, isotopic composition\, and speciation of macro- (e.g.\, N\, P\, S\, Si) and micronutrients (e.g.\, Fe\, Zn\, Cd\, Ni\, Cu) across the entire oxic-anoxic transition both in the modern ocean and the geologic past such as oceanic anoxic events\, (2) assessment of the marine sources and sinks of these elements from low-oxygen environments\, (3) N2O and CH4 production and emissions in low-oxygen systems\, and (4) the impacts of chemical and physical change on productivity and microbial pathways. Regional or global interpretations based on earth system models or large chemical datasets from programs such as GEOTRACES are especially encouraged. \n10k: Trace Metal Cycling and Radioisotope Tracers of Ocean Biogeochemistry (GEOTRACES)  \nConveners: Aridane G. González\, Hannah Whitby\, Amber Annett\, Emilie Le Roy \nThis session will highlight recent advances in marine trace element chemistry and the use of radionuclides as tracers in the marine system. In particular\, we focus on the speciation and ligand-binding reactions of trace metals\, and investigation of both micro- and macro-nutrient cycles and fluxes using natural and anthropogenic radionuclides. The GEOTRACES program\, which aims to map the world’s oceans for trace elements and their isotopes with unprecedented resolution\, has facilitated rapid progress in these research areas. Radioisotopes are becoming increasingly powerful tracers for studying the biogeochemical cycles of carbon\, nutrients\, trace elements and isotopes in the world’s oceans. These tracers can be naturally-occurring or anthropogenic\, with a wide range of half-lives allowing their application to a broad array of processes. Methodological advances and standardization (e.g. through GEOTRACES and RiO5) are contributing to increasing spatial coverage and temporal resolution of data of many marine radioisotopes. In order to understand the processes behind trace metal fluxes and export\, we must also understand the physico-chemical interactions and organic speciation of trace metals\, which play an important role in their biogeochemical cycling. The GEOTRACES effort has vastly increased the database of metal-binding organic ligand distributions\, demonstrating key features and distinct regional trends. However the identification of these ligands\, as well as their effect on the redox reactions and bioavailability of trace metals in natural waters\, are still largely unconfirmed. In this session\, we invite observational\, experimental and modelling contributions on the distribution and characterization of organic ligands in the ocean\, as well as their effect on the redox reactions of metals in seawater. In tandem\, this session brings together studies using radionuclides to investigate aspects of marine biogeochemistry from local to global scale: fluxes and export of particulate material\, sources and sinks of macro- and micro-nutrients\, elemental cycles at ocean margins (e.g. estuaries\, sediments\, hydrothermal vents\, air-sea interface)\, or rates of biological processes (e.g. biological export and remineralisation). Studies presenting advances in methodology\, novel applications of radionuclide tracers\, or using radioisotopes to quantify human impacts on ocean biogeochemistry are also welcome. \n08m: Wally Broecker: A Scientific Celebration of a Life in Geochemistry \nConveners: Sidney Hemming\, Edouard Bard\, Sigurdur Gislason\, Roberta L. Rudnick \nWally Broecker was a towering figure in geochemistry. His research themes that spanned many sub-fields of modern geochemistry\, notably radiocarbon dating (the topic of his Ph.D. thesis)\, chemical oceanography and atmospheric chemistry and their changes through time. He developed methods for dating and tracing processes in the Earth system and applied them to various natural archives such as sediments from the deep-sea and from lakes on land\, fossil corals from tropical islands\, speleothems from caves and varnish deposits from deserts. This allowed him to address myriad research questions\, including testing the orbital theory; determining paleo-hydroclimate in drylands and documenting abrupt climate change that involved coupling between atmosphere and ice-sheets dynamics and the general circulation of the global ocean.Wally became intensely interested in\, and worried about\, the fate of anthropogenic CO2 in the atmosphere\, ocean and biosphere and its consequences such as greenhouse warming and ocean acidification. He was among the first scientists to warn us about the negative aspect of global warming and pleaded for engineering solutions to capture and sequester fossil fuel CO2.Over his long and exceptional career\, Wally always had a powerful and positive influence on a large number of students\, post-docs\, collaborators and fellow scientists working in other institutions on all continents. This session is in honor of Wally’s legacy and in the spirit of his wide-ranging interests and generosity. \nIncludes the GEOTRACES talk: \nGEOTRACES: Inspired by GEOSECS to Investigate Trace Elements and their Isotopes in the Ocean Anderson R\, Francois R\, Frank M\, Henderson G\, Jeandel C & Sharma Mhttps://goldschmidt.info/2019/abstracts/abstractView?id=2019002892Wednesday 21 August 2019\, 10h15 \nGEOTRACES-related sessions: \n08f: The Role of Carbon in Regulating Climate States: Lessons from Earth’s Past \nConveners: Kate Littler\, Gerhard Kuhn\, Norbert Frank\, Thomas Chalk\, William Gray \nKeynotes: Jessica Tierney (University of Arizona)\, Robert (Bob) Anderson (LDEO – Columbia Univ.) \nThis session aims to bring together scientists from the proxy and model communities that study all aspects of past cold and warm states of the Earth’s climate system. We welcome model or proxy studies of biogeochemical cycles and climate change that bring new evidence to light of the concentration and movement of carbon between atmosphere\, biosphere\, oceans\, and sediments and its role in regulating the climate states. This is because Earth’s climate is strongly forced by the concentration of CO2 in the atmosphere on a number of different timescales and climate models rely on accurate information from carbon reservoirs to reconstruct our past and predict our future climate states. Therefore\, this session aims to gather work on reconstructing CO2 and/or its movements between reservoirs to narrow down on the primary mechanisms of climate change on geological timescales\, as well as divining our near future through past evidence of glacial CO2 changes\, long-term CO2 drawdown and release\, and major climate transitions. Submissions interrogating the nature of orbital scale climate variability from any period are strongly encouraged as well as those looking at modern processes of carbon regulation and uptake. \n10a: Silicate Alteration in Ocean Sediments and Synthetic Glasses: Process\, Consequence\, and Kinetics \nConveners: Wei-Li Hong\, Jianghui Du\, Isabelle Muller\, David A McKeown \nKeynote: Catherine Jeandel \nReverse weathering and alteration of silicate mineral-glass under low temperature is of fundamental importance in the source and sink of various elements\, planetary climate\, carbon cycling\, and considerations for long-term nuclear waste glass storage. Silicate glass stability is of concern to many scientific studies: basaltic glasses in geochemical systems\, nuclear waste glasses in their final repository\, and weathering of industrial or cultural heritage glass objects. These processes have been studied through field observations as well as by laboratory experiments. For example\, reverse weathering is known to acidify solution through the neo-formation of clay minerals\, which constitutes significant sinks for trace elements and alkalinity in the ocean and sediments. Weathering of marine silicate minerals\, on the other hand\, has been shown to buffer solution pH and promote the precipitation of authigenic carbonates by increasing alkalinity and the release of cations. The interaction of silicate glass and water has been investigated by laboratory leach tests that range from days to over 30 years. These leach studies have identified smectites concomitant with long-term glass stability at low leach rates\, as well as the common occurrence of rapid acceleration of glass alteration associated with zeolite formation at high temperatures or high ratios of glass surface area to leachant volume. Outstanding issues concerning silicate alteration that will be addressed in this session include: the impact on benthic fluxes of various elements in the ocean; the effect on the global elemental cycle and planetary climate; how the strength of these processes vary with time and space; the factors governing the formation of aluminosilicate minerals (such as zeolites and smectites)\, the associated kinetics during glass alteration and its modeling. The two keynote speakers will share their insights on how submarine weathering of lithogenic material affects benthic fluxes of macro- & micro-nutrients (Dr. Catherine Jeandel from LEGOS)\, and macroscopic to atomic scale silicate glass alteration (Dr. Stéphane Gin from CEA). \n  \n10h: The Oceanic Particle Flux and its Cycling within the Deep Water Column \nConveners: Maureen Conte\, Rut Pedrosa Pamies\, Phoebe Lam\, Henry Ruhl \nThe oceanic particle flux plays a major role in global elemental cycles\, the ocean uptake of carbon dioxide\, and the transfer of energy and matter to the deep ocean and sediments. The particle flux and its composition represent a dynamic balance between biological processes that generate large sinking particles in the upper ocean and particle cycling processes within the ocean interior that consume\, modify and produce new sinking particles\, including biologically-driven organic matter remineralization\, particle aggregation/disaggregation\, chemical scavenging\, and authigenic mineral precipitation. New observational platforms\, sampling methods and advances in chemical and molecular techniques (e.g.\, metabolomics\, metagenomics\, transcriptomics) allowing for expanded particle characterization are providing novel insights on particle flux transformations within the deep water column\, including the depth evolution of particle-associated microbial communities and the scavenging of dissolved and suspended materials associated with biological reprocessing of flux materials. Synthesis and modeling studies are providing increased understanding of linkages between ecosystem structure and global patterns in surface export and flux transfer efficiency to the deep ocean. This multidisciplinary session will bring together scientists under research themes related to geochemistry\, biology\, oceanography\, modeling and climatology to present the current status of our understanding of processes controlling the magnitude and composition of the oceanic particle flux\, its attenuation and transformation with depth\, and its coupling with associated biogeochemical cycles. Session presentations will describe novel findings and syntheses which\, in turn\, will highlight key knowledge gaps in the particle flux and its role in geochemical cycles. \n  \n12a: Hydrobiogeochemical Processes at the Sediment-Water Interface: Wetlands\, River Corridors and Coastal Zones \nConveners: Dipankar Dwivedi\, Xingyuan Chen\, Joseph Tamborski\, Valentí Rodellas\, Edward O’Loughlin\, Yamin Deng\, Virginie Sanial \nKeynote: Christof Meile (University of Georgia) \nTerrestrial-aquatic and surface-groundwater interfaces are transitional zones that play a vital role in controlling the exchange of water and chemical constituents between land and water systems. In terrestrial-aquatic interfaces (e.g.\, wetlands and lagoons) the movement of water and the biogeochemically catalyzed transformations of its constituents determine the mobility of nutrients and contaminants\, the emission of greenhouse gasses into the atmosphere\, carbon (C) cycling and sequestration in subsurface environments\, and the quality of water itself. Likewise\, groundwater-surface water interactions (e.g. hyporheic and porewater exchange\, terrestrial and submarine groundwater discharge) have long been recognized as an important component of the hydrological cycle and an essential pathway for the transfer of material (e.g. nutrients\, metals\, C\, and contaminants) to surface water bodies (e.g. coastal ocean\, streams\, lakes\, lagoons\, and wetlands). This session brings together studies focusing on hydrobiogeochemical exchanges occurring at terrestrial-aquatic and surface-groundwater interfaces\, and their impacts on freshwater and marine systems. We particularly welcome new contributions addressing i) geomorphological and hydrobiogeochemical processes (including redox dynamics and transformations of C\, nutrients\, metals\, and contaminants) occurring in wetland environments (sediments\, rhizosphere\, and water)\, coastal aquifers\, submarine groundwater discharge zones\, and hyporheic zones; ii) modeling of ecosystem processes; iii) the challenges of bridging across scales (e.g.\, molecular to landscape; regional to global-scale). Method-based contributions which address iv) omics and bioinformatics approaches for identifying microbial interactions\, and v) new methodologies and the combination of approaches to trace groundwater-surface water interactions and associated forcing mechanisms\, are also welcomed. \n  \n13f: Trace Elements Speciation: Novel Methodologies and Insights into Transformations Influencing their Global Biogeochemical Cycle \nConveners: Sylvain Bouchet\, Adrien Mestrot \nMany trace elements (TE) can be toxic (e.g.\, As\, Hg\, Sb) and/or essential (e.g.\, Cu\, I\, Se) for humans\, plants and wildlife. Some also play important roles in atmospheric processes\, e.g.\, S\, I and Br. To understand the biogeochemical cycle and effects of TE\, it is crucial not only to quantify them in environmental and biological compartments\, but also to determine their speciation. This entails the distribution of TE between specific chemical forms in term of electronic or oxidation state\, molecular structure or complexes formed with various ligands. Indeed\, the partitioning\, transport\, bioavailability\, bioaccumulation and toxic or beneficial effects of TE largely depend on their speciation. The goal of this session is to highlight recent advances (1) in methodologies\, using elemental\, molecular and/or spectroscopic techniques\, allowing the identification and/or quantification of TE species (2) in our mechanistic understanding of the biotic and/or abiotic transformations affecting TE species (e.g.\, alkylation/dealkylation\, oxidation/reduction\, colloid formation and sorption/desorption) and (3) in assessing fluxes of TE among aquatic\, terrestrial and atmospheric (eco)systems. Contributions to the session may include fundamental and applied research based on laboratory work\, field experiments and/or modeling approaches. Studies looking at the potential effects of on-going and future global changes\, such as climate change and eutrophication\, on the fate of TE and their species are also strongly encouraged. \n  \n13e: Radionuclides in the Environment: Modeling\, Experimental\, Scaling\, Controlling Chemical/Microbial/Hydrological Processes \nConveners: Peter H. Santschi\, Daniel Kaplan \nSince the onset of the Manhattan project\, fluxes of anthropogenic radionuclides through the environment increased. This has resulted in increased concentrations of a number of anthropogenic radionuclides in the various environmental reservoirs. Consequently\, there is a growing need to understand and predict the consequences of increased fluxes of anthropogenic radionuclide\, in relation to those of natural radionuclides. At the same time\, the input of both anthropogenic and natural radionuclides can provide us\, due to their radioactive decay\, with the ability to get insights into time and spatial scales of key chemical/microbial/hydrological processes. The objective of this session is increased understanding of biogeochemical processes that control radionuclide cycling and their consequences in natural and anthropogenic systems. The emphasis is on modeling\, experimental\, scaling\, controlling chemical/microbial/hydrological processes. Themes can include: 1) Radionuclide speciation in aquatic\, terrestrial and atmospheric compartments\, including particulate and colloidal phases\, and the role biological processes play in determining radionuclide mobility\, oxidation state and degree of organic complexation/chelation. 2) Radionuclides in environments that provide sinks of radionuclides in the geosphere\, including wetlands\, lake sediments and soils. 3) Controlling chemical/microbial/hydrological processes\, including dissolution from primary mineral or organic phases\, sorption and incorporation into secondary phases. \n  \n 
URL:https://www.geotraces.org/event/goldschmidt-2019/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20190708T080000
DTEND;TZID=Europe/Paris:20190718T170000
DTSTAMP:20260424T135128
CREATED:20190123T083828Z
LAST-MODIFIED:20190123T083828Z
UID:2107-1562572800-1563469200@www.geotraces.org
SUMMARY:27th IUGG General Assembly
DESCRIPTION:27th IUGG General Assembly Dates: 8-18 July\, 2019Location: Palais des Congrès in Montréal\, Québec\, Canada \nThe 27th International Union of Geodesy and Geophysics (IUGG) General Assembly will be held July 8-18\, 2019 at the Palais des Congrès in Montréal\, Québec\, Canada. This is a special opportunity for participants from Canada and from around the world to come together and share their science and culture. 2019 marks the 100th anniversary of IUGG; we will look back on the accomplishments of the previous century of Earth and space science research\, and forward to the next century of scientific advancement. Join us for a host of scientific activities\, including special public lectures\, keynote Union lectures and a wide variety of themed sessions. \nIAPSO is sponsoring or co-sponsoring 31 symposia covering a wide range of topics\, including several two linking to biogeochemistry (see below) but also subjects such as marine plastics and ocean acidification. \nThe program details can be found at the Assembly’s website: http://www.iugg2019montreal.com/iugg-program.html. Deadline for abstract submission in February 18th 2019. \nGEOTRACES relevant sessions: \n \nP02 – PHYSICS AND BIOGEOCHEMISTRY OF SEMI-ENCLOSED\, SHELF SEAS\, AND COASTAL ZONES \nConvener: Peter Zavialov (Russia) \nCo-Conveners: Jianping Gan (China)\, Osmar Moller Jr (Brazil)\, Katrin Schroeder (Italy) \nDescription \nThis interdisciplinary symposium provides a joint forum for oceanographers whose research focuses on physical\, chemical\, and biological processes in coastal zones\, semi-enclosed and shelf seas of the World\, as well as their responses to climate change and anthropogenic impacts. These areas are often characterized by complex interactions between land\, ocean\, and atmosphere\, they exhibit rich dynamics driven by a variety of feedbacks and forcing mechanisms. Marginal seas and coastal areas are particularly vulnerable to climate change effects and anthropogenic stressors. Given their limited geographical extension and their sometimes constricted connection to the open ocean\, these environments often exhibit shorter timescales in their responses to external forcing: this is why they are widely recognized as natural “laboratories” for studying oceanic processes and interactions between the physical\, biogeochemical and climatic spheres. They also play an exceptionally important role in ecosystem services and socio-economic issues and require careful governance measures to avoid or mitigate environmental deterioration. \nGathering experts from different regions\, the symposium will give a global perspective of the topic through comparison and elucidation of similarities and differences. Contributions on different regions are invited\, related to themes such as innovative observational\, theoretical\, experimental and modeling studies of the hydrodynamics\, marine biogeochemistry (e.g.\, nutrient dynamics\, primary production\, acidification\, algae blooms) and the influence these regional seas and coastal zones exert on the adjacent basins/oceans and on the global scale. Studies of past\, present and future climate variability are welcome\, as well as interdisciplinary studies on the bio-physical interactions in semi-enclosed and shelf seas. \nP09 – MARINE BIOGEOCHEMISTRY THROUGH TIME: NUTRIENT\, TRACE METAL\, OXYGEN\, AND CARBON CYCLING IN THE PAST\, PRESENT AND FUTURE \nConvener: Kate Hendry (UK) \nCo-Conveners: Zanna Chase (Australia)\, Katja Fennel (Canada)\, Patrick Rafter (USA) \nDescription \nOcean biogeochemistry is undergoing significant changes\, with likely effects on primary production and ecosystem health from massive human perturbations of the global carbon and nitrogen cycles. Future projections are highly uncertain\, but unlocking drivers and effects of biogeochemical reorganizations in Earth’s past may hold clues. \nThe aim of this symposium is to explore recent developments in our understanding of marine biogeochemistry at the interface of different disciplines. Topics could include limitation of primary production by micro-nutrients and macro-nutrients; the role of ecological interactions at the scales of populations\, assemblages and ecosystems; boundary processes including sedimentary cycling\, inputs from rivers\, groundwater\, the cryosphere and atmosphere; and physical movement that influences nutrient distribution and light availability by turbulent mixing\, mesoscale eddies and large-scale ocean circulation. We welcome contributions that offer a broad perspective from a wide range of disciplines\, including studies that utilise and bring together paleoclimate archives\, modern oceanographic observations\, and models.
URL:https://www.geotraces.org/event/27th-iugg-general-assembly/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20190421
DTEND;VALUE=DATE:20190426
DTSTAMP:20260424T135128
CREATED:20190329T133423Z
LAST-MODIFIED:20191010T083223Z
UID:2108-1555804800-1556236799@www.geotraces.org
SUMMARY:SOLAS Open Science Conference
DESCRIPTION:SOLAS Open Science Conference\nDates: 21-25 April 2019\nLocation: Sapporo\, Japan \nFor further information: https://www.confmanager.com/main.cfm?cid=2778 \n\nGEOTRACES Special Session:  \nAtmospheric deposition of iron\, ocean biogeochemistry and marine emission of biological aerosols \nConveners: Akinori Ito (JAMSTEC)\, William M. Landing (Florida State University) and Douglas S. Hamilton (Cornell University) \nAtmospheric deposition of aerosols to the ocean has been suggested to modulate marine primary productivity. Marine organic material has been shown to be an important source of ice-nucleating particles (INP) in high-latitude environments\, and hence impacts the atmospheric energy balance. Significant progress has been made in our understanding of atmospheric inputs of labile iron (Fe) from natural and anthropogenic sources to the surface oceans. However\, there are still large uncertainties regarding the relative importance of different sources of aerosols\, the effects of atmospheric aerosol deposition on bioavailable Fe concentrations in the ocean and on the marine organic material and its role as INP. The discussion in this session focuses on problems and challenges in laboratory experiments and field measurements to improve the representations of trace metal biogeochemistry in atmosphere and ocean models\, in particular\, the two-way movement of aerosol material across the boundary between the atmosphere and ocean.
URL:https://www.geotraces.org/event/solas-open-science-conference-2/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20190223
DTEND;VALUE=DATE:20190303
DTSTAMP:20260424T135128
CREATED:20180921T130603Z
LAST-MODIFIED:20191010T083351Z
UID:2097-1550880000-1551571199@www.geotraces.org
SUMMARY:ASLO 2019\, Aquatic Sciences Meeting
DESCRIPTION:ASLO 2019\, Aquatic Sciences Meeting\nDates: 23 February – 2 March 2019\nLocation: San Juan\, Puerto Rico \nFor further information: https://aslo.org/sanjuan2019/main\n \n\nGEOTRACES sessions: \n\nSS51. New views on the biological transformation of metals in the marine environment \nRandelle Bundy\, University of Washington\nShane Hogle\, Massachusetts Institute of Technology\nKatherine Heal\, University of Washington\nKristen Buck\, University of South Florida\nP. Dreux Chappell\, Old Dominion University \n \nRecent results from the GEOTRACES program and other large-scale oceanographic surveys have provided compelling new insights into the distributions\, chemical speciation\, sources\, and sinks of trace metals. The bio-active trace metals such as iron\, copper\, cobalt\, zinc\, nickel and manganese are particularly compelling because they influence surface ocean primary productivity\, deep ocean carbon storage\, and atmospheric carbon dioxide concentrations in our modern earth system and over geologic timescales. There is still much to learn about the regeneration of bioactive metals from organic matter\, the influences of biological ligand production\, and the impacts of trace metal bioavailability in the ocean. Insights from recent biogeochemical studies have raised new questions related to the biogeochemical processes impacting the distributions of trace metals\, and novel methodological approaches are now revealing the molecular mechanisms that connect major bio-active trace metal cycles to the physiology\, ecology\, and evolution of marine microorganisms. However\, these techniques have only begun to be coupled with the wealth of existing geochemical knowledge afforded by existing large-scale programs. Here we welcome submissions relating to the cycling of bio-active trace metals\, particularly those using innovative techniques and novel modeling approaches. We also welcome studies from across temporal and spatial scales\, as well as experimental and modeling studies that bridge biological and geochemical cycling of trace elements. We hope this session will provide a forum for diverse scientific perspectives on the biogeochemical cycling of trace metals in the ocean. \n 
URL:https://www.geotraces.org/event/aslo-2019-aquatic-sciences-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20190106
DTEND;VALUE=DATE:20190110
DTSTAMP:20260424T135128
CREATED:20180129T085709Z
LAST-MODIFIED:20180129T085709Z
UID:2076-1546732800-1547078399@www.geotraces.org
SUMMARY:Fourth Xiamen Symposium on Marine Environmental Sciences (XMAS-IV)
DESCRIPTION:Fourth Xiamen Symposium on Marine Environmental Sciences (XMAS)Dates: 6-9 January 2019Location: Xiamen\, China \nFor further information: http://mel.xmu.edu.cn/conference/4xmas \n \nThe deadline for abstract submission is Aug 31\, 2018.  \nGEOTRACES session: \nThe role of trace metals in controlling structure and function of microbial communities in contemporary oceans  \nPunyasloke Bhadury\, Yeala Shaked\, Maria Maldonado\, Yihua Cai\, Chris Bowler \nTrace metals are essential for life\, catalyzing key cellular reactions that influence ocean productivity\, biodiversity\, and biogeochemical cycling of the major elements including carbon and nitrogen. Essential trace metals\, such as iron and zinc\, are usually present at very low dissolved concentrations in seawater and are mostly found as stable organic complexes. Indeed\, in large oceanic regions trace metals control the physiology and ecological functioning of microbial communities. There is a need to understand how microbial communities including nano and pico-phytoplankton acquire essential metals and how biological activity is affected by metal availability and resulting consequences for cycling of essential elements such as carbon\, nitrogen and phosphorus. To understand many of these questions\, large international research programs such as GEOTRACES have been initiated incorporating trans-disciplinary approaches to understand mechanistic links between geochemical and biological variability. In this session\, we welcome contributions from researchers\, including early career scientists\, investigating the role of trace metals on the structure and functioning of microbial communities including marine phytoplankton across ecosystems. In particular\, we welcome submissions in areas which address the link between trace metals and isotopes with a focus on microbial communities mediating the cycling of major nutrients in contemporary oceans\, metal uptake and competition between microbes for metal resources and the role of trace metals in shaping cellular function and evolution. \nSession ID: C3 [Bio-GEOTRACES]
URL:https://www.geotraces.org/event/fourth-xiamen-symposium-on-marine-environmental-sciences-xmas-iv/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180812
DTEND;VALUE=DATE:20180818
DTSTAMP:20260424T135128
CREATED:20171106T151733Z
LAST-MODIFIED:20171106T151733Z
UID:2063-1534032000-1534550399@www.geotraces.org
SUMMARY:Goldschmidt 2018
DESCRIPTION:Goldschmidt 2018Dates: 12 – 17 August 2018Location: Boston\, USA \nFor further information: https://goldschmidt.info/2018/index \nAbstract submission deadline: 30 March 2018 \nGEOTRACES session: \n \nSession 07i: New Insights in Marine Trace Element Biogeochemistry \nConveners: Christian Schlosser\, Florian Scholz\, Rene Boiteau\, Tim Conway\, Daniel Ohnemus\, Jennifer McKay\, William Homoky and Jessica Fitzsimmons. \nThe cycling of trace elements in the ocean is strongly influenced by a combination of biotic and abiotic processes including biological utilization\, water mass circulation\, sources and sinks\, and interactions with particles. Many trace elements are essential for life\, while others may be toxic pollutants. Therefore\, understanding the factors that control the distribution\, reactivity\, and bioavailability of these elements is important for predicting their effect on ecosystems and climate\, and for using them as tracers of ocean processes. Recent advances in oceanography have begun to clarify the unique sources and chemical forms of these elements throughout the ocean. Examples include better constraints on the cycling and sources of dissolved elements by isotopic analyses\, improved parametrization of benthic metal processes and fluxes in biogeochemical models\, revelation of particulate and colloidal metal phases by size-partitioned analyses\, and elucidation of siderophore\, humic\, and mineral forms of metals using novel applications of electrochemical\, mass spectrometric\, and x-ray spectroscopic methods. This session solicits submissions highlighting new findings about the processes that influence the marine biogeochemistry of marine trace elements and their isotopes in the past and present. We invite contributions that focus on the study of elemental isotope fractionation\, biological uptake and remineralization\, exchange processes at the sediment-bottom water and hydrothermal interfaces\, metal speciation and redox chemistry\, and biogeochemical modeling. Abstracts concerning new insights on elemental cycling from GEOTRACES ocean sections and process studies on the cycling of trace elements\, and any other works focused on understanding the transformations of metals from the molecular to global scale are strongly encouraged.  \nGEOTRACES-related session: \nSession 07l: Carbon Storage in the Ocean now and over Time \nConveners: Laura Robinson\, Gideon Henderson\, Christopher Hayes\, Barbel Honisch and Joe Stewart. \nKeynote speaker: Richard Zeebe (University of Hawaii) \nThis session invites contributions that relate to mechanisms through which the oceans cycle and store carbon. We welcome studies that consider the natural system’s capacity to store carbon today and over geologic timescales\, the rates of carbon cycle processes\, and the biogeochemical pathways involved in the carbon cycle. We also welcome efforts to examine modern day geoengineering of the ocean’s biogeochemical systems. \n  \nSession 07m: Sedimentary biogeochemical cycling along continental margins: role of climate\, tectonic setting\, and oceanographic regimes \nConveners:  Sian Henley\, Johan Faust\, Silke Severmann\, Robert Aller \nContinental margins are regions of intense diagenetic cycling\, sediment-water fluxes\, and burial of biogenic and lithogenic debris.  Margins are generally characterized by high biological productivity and sediment accumulation rates. However\, specific modes of benthic elemental cycling\, authigenic mineral formation\, and storage are strong functions of depositional environment\, including physical dynamics and sediment sources.  The effects of climate change\, such as decreasing sea-ice in the higher latitudes or changing precipitation patterns in drainage basins\, have the potential to greatly alter benthic cycling and the exchange between sediments and the water column.   This session will explore and contrast benthic biogeochemical cycling along continental margins from a range of climatic and weathering regimes (e.g.\, drainage basin weathering\, Corg reactivity)\, tectonic setting (active\, passive margins)\, sediment types (permeable\, impermeable)\, coastal processes (deltaic\, non-deltaic)\, and oceanographic conditions (e.g.\, upwelling\, ice cover\, ventilation – oxygenation\, tidal range). We particularly welcome contributions that focus on the origin\, processing\, fate\, and characterization of organic and inorganic carbon\, nutrients and metals within the context of modern climate\, oceanographic and ecosystem change.
URL:https://www.geotraces.org/event/goldschmidt-2018/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180610
DTEND;VALUE=DATE:20180616
DTSTAMP:20260424T135128
CREATED:20180118T145424Z
LAST-MODIFIED:20180118T145424Z
UID:2075-1528588800-1529107199@www.geotraces.org
SUMMARY:ASLO 2018 Summer Meeting
DESCRIPTION:Association for the Sciences of Limnology and Oceanography (ASLO) 2018 Summer Meeting Dates: 10 -15 June 2018Location: Victoria\, BC\, Canada \nFurther information: https://aslo.org/victoria2018/main \nGEOTRACES-related sessions: \nSS82: EMERGING MODELS OF TRACE METAL BIOAVAILABILITY TO AQUATIC ORGANISMS \nDavid Semeniuk\, Minnow Environmental Inc. (dsemeniuk@minnow.ca)Randelle Bundy\, University of Washington (rbundy@uw.edu)Anne Cremazy\, U. British Columbia (acremazy@zoology.ubc.ca) \nWell established equilibrium-based trace metal bioavailability models for aquatic organisms (e.g.\, the Free Ion Activity Model and Biotic Ligand Model) have proven useful for predicting the bioavailability and toxicity of metals in aqueous environments for a variety of organisms\, from phytoplankton to fish. These models propose that metal bioavailability is proportional to the concentration of the free metal ion in solution. Thus\, given enough information about the chemical environment\, one can predict metal bioavailability and potential toxicity. Yet\, emerging laboratory and field studies indicate that these models do not accurately predict metal bioavailability under all environmentally realistic conditions\, such as when salinity and pH varies\, when natural organic ligands and bioavailable metabolites are present\, and at low trace metal concentrations (as opposed to high concentrations typical of industrial effluents). In light of this\, this session seeks new work that explores modified or alternative models for trace metal bioavailability to aquatic organisms\, and their ecological implications. We invite research concerning both experimental and biophysical chemical modeling of trace metal bioavailability\, including the roles of chemical speciation\, kinetic controls on metal bioavailability\, and the influence of metal and organic ligand mixtures on metal speciation\, bioavailability and toxicity.
URL:https://www.geotraces.org/event/aslo-2018-summer-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20180211
DTEND;VALUE=DATE:20180217
DTSTAMP:20260424T135128
CREATED:20160415T123518Z
LAST-MODIFIED:20160415T123518Z
UID:2015-1518307200-1518825599@www.geotraces.org
SUMMARY:2018 Ocean Sciences Meeting
DESCRIPTION:2018 Ocean Sciences Meeting Dates: 11-16 February 2018Location: Portland\, Oregon\, USA. \nFor more information: http://osm.agu.org/2018/# \nGEOTRACES and GEOTRACES related Town Halls: \nRelease of new GEOTRACES Data ProductWednesday\, February 14\, 2018\, 12:45 PM – 01:45 PMOregon Convention Center – Oregon Ballroom 201 Room has changed! \nGEOTRACES\, an international study of the marine biogeochemical cycles of trace elements and their isotopes\, has released its second data product (IDP2017).  The new data product expands greatly on the first collection of results released in 2014 in two important ways: 1) by adding a substantial body data from new cruises and 2) by adding additional datasets not available in the 2014 data product from cruises across the five world Oceans (e.g. aerosols\, isotopes and biological parameters that support the emerging BioGEOTRACES initiative). This expanded set of parameters available in the IDP2017\, ranging across micronutrients\, contaminants\, radioactive and stable isotopes and a broad suite of hydrographic parameters used to trace water masses provides an unprecedented means to understand the role of trace elements in shaping the functioning of the Ocean system.  We invite everyone to this town hall to learn about accessing IDP2017 and how it can be used for interdisciplinary research and teaching applications: http://www.bodc.ac.uk/geotraces/data/idp2017/ \nOrganizers: Robert F Anderson\, Columbia University of New York; Alessandro Tagliabue\, University of Liverpool; Gregory A Cutter\, Old Dominion University and Maite Maldonado\, University of British Columbia. \nDeveloping a framework for trace element\, isotope\, and other biogeochemical research in the Gulf of Mexico and Caribbean SeaTuesday\, February 13\, 2018\, 12:45 PM – 01:45 PMOregon Convention Center – Oregon Ballroom 201 Room has changed! \nIn addition to their dynamical influence on the formation of the Gulf Stream\, the Gulf of Mexico and Caribbean Sea are strongly affected by continental margin processes such as major river inputs and significant submarine groundwater discharges. GEOTRACES studies have increasingly demonstrated the importance of ocean margins in affecting trace element and isotope (TEI) fluxes to the open ocean. Given the importance of these marginal fluxes for cycling of carbon and nutrients\, the Gulf of Mexico has been a regional focus for recent OCB activities. However\, these activities\, as well as the 2010 Deepwater Horizon oil spill\, have revealed major gaps in our understanding of how inputs to the shelf influence biogeochemical and biological processes in open waters\, especially with regard to TEIs. Most such Gulf studies have focused on the Louisiana and West Florida shelves\, with little attention to open waters and interactions with the Loop Current. The steering committees of US GEOTRACES and OCB are beginning a conversation devoted to TEI research in the Gulf of Mexico and Caribbean. We invite GEOTRACES\, OCB\, and other ocean scientists interested in these marginal seas to discuss processes of interest\, existing programs and data sets\, and potential steps forward. \nOrganizers: Alan M Shiller\, University of Southern Mississippi; Heather M Benway\, Woods Hole Oceanographic Inst.; Robert F Anderson\, Columbia University & Lamont-Doherty Earth Observatory; Angela N Knapp\, Florida State University; Benjamin S Twining\, Bigelow Lab for Ocean Sciences and Kristen N Buck\, University of South Florida \nUpdate on the Second International Indian Ocean Expedition (IIOE-2)Monday\, February 12\, 2018\, 12:45 PM – 01:45 PMOregon Convention Center – D135-D136 \nThe second International Indian Ocean Expedition (IIOE-2) was launched on December 2015 and it will run through 2020 and beyond. This session will provide an update on international research activities that are being undertaken and planned in IIOE-2 and also report on the outcomes of a recent US Indian Ocean Science Planning workshop. The session will also present the mechanisms for involvement of interested scientists in IIOE-2 activities. \nOrganizers: Raleigh R Hood\, Michael J McPhaden and Lynne D Talley. \nGEOTRACES and GEOTRACES related sessions: \nThe Behavior of Trace Elements and Isotopes in Different Ocean Basins: New Insights from Comparisons and ContrastsSession ID#: 28118 Wednesday\, February 14\, 2018\, 08:00 AM – 10:00 AM\, 02:00 PM – 04:00 PMPosters: Wednesday\, February 14\, 04:00 PM – 06:00 PM \nSession Description: \nRecent international programs such as GEOTRACES have been examining the biogeochemical cycling of trace elements and isotopes (TEIs) in the world’s oceans to reveal the mechanisms and rates affecting their concentrations\, distributions\, chemical forms\, and interactions with organisms. In addition to studies by individual investigators\, the accumulating results show many similarities\, but some surprising differences between ocean basins\, with a classic example being the regionally-specific Cd/PO4 relationships. In the same way that deviations from the Redfield ratio of N/P between ocean basins\, known since the 1970s GEOSECS program\, provide insight into nitrogen cycle processes\, what can we learn from the comparisons and contrasts of TEIs\, and what tools are needed to explore and test these observations? This session seeks presentations from the observational and modeling communities on lessons learned from inter basin TEI data sets with respect to inputs to\, cycling within\, and exports from the world’s oceans. In addition we invite contributions that consider how TEI distributions\, their chemical speciation\, and interactions with micro-organisms shape microbial community structure and productivity in various ocean basins. \nPrimary Chair:  Gregory A Cutter\, Old Dominion University\, Ocean\, Earth and Atmospheric Sciences\, Norfolk\, VA\, United States \nCo-chairs:  Adrian Burd\, University of Georgia\, Athens\, GA\, United States\, Jay Thomas Cullen\, University of Victoria\, Victoria\, BC\, Canada and Tung-Yuan Ho\, Research Center for Environmental Changes Academia Sinica\, Taipei\, Taiwan \nAbiotic and Biotic Retention\, Recycling\, and Remineralization of Metals in the OceanSession ID#: 23502 Monday\, February 12\, 2018\, 04:00 PM – 06:00 PM and Tuesday\, February 13\, 2018\, 08:00 AM – 10:00 AM Posters: Monday\, February 12\, 2018\, 04:00 PM – 06:00 PM \nSession Description: \nTrace metals shape both the biogeochemical functioning and the biological structure of oceanic provinces\, and considerable insight into trace metal distributions have been gleaned from international programs like GEOTRACES. To date\, observational and modelling efforts have mainly focused on modes of external metal supply from different sources. While this has yielded important advances\, we also know that metals undergo key internal transformations such as biotic uptake\, scavenging\, recycling\, and remineralization.  These internal transformations play crucial roles in shaping the biogeochemical cycling of metals by governing their bioavailability\, oceanic distributions\, and residence times. In this session we solicit presentations that address key questions regarding the abiotic and biotic processes regulating (i) the retention timescale for metals in the upper ocean\, (ii) surface ocean metal recycling and bioavailability\, (iii) the subsurface regeneration length scales for metals in the ocean interior\, and (iv) the role of mineral versus organic characteristics of sinking particles on metal scavenging.  We also seek presentations that provide insights into how these key questions are mediated by differing physico-chemical and microbial processes in contrasting ocean settings. Presentations showing insights from the diverse standpoints of biogeochemical oceanography and molecular ecology\, from both observational and modelling perspectives\, are strongly encouraged. \nPrimary Chair:  Philip W Boyd\, University of Tasmania\, Institute for Marine and Antarctic Studies\, Hobart\, Australia \nCo-chairs:  Kristen N Buck\, University of South Florida Tampa\, College of Marine Science\, Tampa\, FL\, United States; University of South Florida\, College of Marine Science\, St. Petersburg\, FL\, United States\, Jessica N Fitzsimmons\, Texas A&M University\, Department of Oceanography\, United States and Alessandro Tagliabue\, University of Liverpool\, Liverpool\, United Kingdom \nThe Dawn of BioGEOTRACES: Metal-Microbe Interactions in the OceanSession ID#: 27768Thursday\, February 15\, 2018\, 08:00 AM – 12:30 AMPosters: Thursday\, February 15\, 2018\, 04:00 PM – 06:00 PM \nSession Description: \nTrace metals are essential for life\, catalysing key cellular reactions which then govern patterns of ocean fertility and biodiversity. Fundamental in this regard are the ways in which ocean microbes acquire essential metals and how biological activity is affected by metal availability. Developments in this field are being led by advances in analytical chemistry\, nanotechnology\, molecular biology\, and bioinformatics\, as well as the expansion of ‘omics’-related observations of in-situ microbial communities\, and the advent of new high resolution geochemical data from the international GEOTRACES program. It is now timely to bring together insights from these different disciplines\, spanning observation and modelling approaches to better understand how microbial activity\, diversity and ecology is shaped by interactions with trace metals over different space and time scales. By linking across disciplines\, there is the potential to develop the mechanistic understanding required to inform the ecological and biogeochemical models we rely on for testing hypotheses and projecting the impacts of ocean change. We are specifically interested in contributions that address (i) metal uptake and competition between microbes for metal resources\, (ii) how microbes adapt their physiology to metal scarcity and varied supply and (iii) how trace metals shape cellular function and evolution. \nPrimary Chair:  Adrian Marchetti\, University of North Carolina\, at Chapel Hill\, Department of Marine Sciences\, Chapel Hill\, NC\, United States \nCo-chairs:  Maria Teresa Maldonado\, University of British Columbia\, Vancouver\, BC\, Canada\, Alessandro Tagliabue\, University of Liverpool\, Liverpool\, United Kingdom and Yeala Shaked\, Hebrew University\, Interuniversity Institute for Marine Sciences\,\, Eilat\, Israel \n  \nBiogeochemical Processes Across Oxic-Anoxic TransitionsSession ID#: 28621Monday\, February 12\, 2018\, 08:00 AM – 10:00 AM\, 10:30 AM – 12:30 PMPosters:  Monday\, February 12\, 2018\, 04:00 PM – 06:00 PM \nSession Description: \nA suite of metabolically and chemically important oxidation-reduction reactions occur through the transitions from oxic to anoxic regions of the ocean. These reactions drive nutrient availability and metal solubility\, as well as organic matter production\, consumption\, and preservation. As oxygen minimum and deficient zones expand\, redox reactions in low to no oxygen environments are becoming globally more important\, both for the nitrogen and carbon cycles and also for trace metals. Understanding such environments can provide an important analogue for ocean chemistry and microbial life in the Precambrian\, prior to the great oxygenation events. This session seeks to bring together geochemical\, biological\, and physical scientists working on low oxygen and anoxic regions\, in order to create an integrated picture of biogeochemistry in these environments. Presentations from observational\, experimental\, or modeling standpoints on nutrients\, trace elements\, dissolved gases\, isotope systematics\, microbiology\, biological productivity\, or physical drivers in these regions are all invited. We especially encourage submissions investigating the redox transition in the water column or sediments of restricted basins such as Saanich Inlet and the Black Sea\, as well as GEOTRACES and open-ocean studies of settings such as the Eastern Tropical Pacific\, North Atlantic\, and Indian OMZs. \nPrimary Chair:  Jeffry V Sorensen\, University of Victoria\, School of Earth and Ocean Sciences\, Victoria\, BC\, Canada \nCo-chairs:  Roberta Claire Hamme\, University of Victoria\, School of Earth and Ocean Sciences\, Victoria\, BC\, Canada and Tim M Conway\, University of South Carolina\, Columbia\, SC\, United States \nOcean Biogeochemistry and Air-Sea InteractionsSession ID#: 29651Thursday\, February 15\, 2018\, 02:00 PM – 04:00 PM and Friday\, February 16\, 2018\, 08:00 AM – 10:00 AMPosters:  Wednesday\, February 14\, 2018\, 04:00 PM – 06:00 PM \nSession Description: \nStudies of ocean biogeochemistry related to air-sea interactions are providing significant new information to help us understand a wide variety of physical\, chemical and biological processes in the oceans. There are many processes that link the surface ocean and the lower atmosphere\, for example\, the release of biogenic compounds as sources of cloud or ice condensation nuclei\, the deposition of natural and anthropogenic aerosols that can affect plankton communities\, the transport of airborne microbes that can alter the dynamics of proximal and distant ecosystems\, the biology\, chemistry and physics of the sea-surface microlayer (SML) as the interface through which all exchanges between the atmosphere and the ocean occur\, the enrichment of surfactants and other biogenic compounds in the SML that can affect gas exchange rates\, etc. Understanding these processes is crucial for improving the reliability of regional and global models and the evaluation of future scenarios. We welcome contributions on all aspects of the physics\, chemistry\, and biology of air-sea interactions\, including observations\, experimentation\, methodological or technical developments\, and theoretical and modeling efforts. \nPrimary Chair:  Francesc Peters\, Institute of Marine Sciences (ICM\, CSIC)\, Barcelona\, Spain \nCo-chairs:  William M Landing\, Florida State University\, Department of Earth\, Ocean\, and Atmospheric Science\, Tallahassee\, FL\, United States\, Oliver Wurl\, Carl von Ossietzky Universität Oldenburg\, Institute for Chemistry and Biology of the Marine Environment\, Wilhelmshaven\, Germany and Brian Ward\, National University of Ireland\, Galway (NUIG)\, School of Physics\, Galway\, Ireland \n  \nBridging Microbial\, Stable Isotope\, and Micronutrient Approaches to Marine Carbon and Nitrogen RecyclingSession ID#: 28316Monday\, February 12\, 2018\, 08:00 AM – 10:00 AMPosters:  Monday\, February 12\, 2018\, 04:00 PM – 06:00 PM \nSession Description: \nThe efficiency of the ocean’s biological carbon pump is determined by the physical transport and cycling of both macro- (N\, P\, Si\, S\, O) and micro-nutrients (e.g. Fe\, Zn\, Co\, Cu\, Cd\, Ni\, Mn\, Mo\, V\, B\, Se). However\, even as our capability to measure nutrient concentrations and their isotopes have expanded to include basin-scale datasets\, we continue to be challenged by new insights with respect to variable plankton and organic matter stoichiometry\, lateral nutrient transport fluxes\, ‘new’ vs. ‘recycled’ nutrients\, metal-organics complexation\, scavenging rates\, variable remineralization rates\, elemental residence times\, and more. Here we welcome submissions that address macro- and micro-nutrient cycling and their effects on sustaining the marine carbon (e.g. export production) and nitrogen (e.g. nitrogen fixation\, denitrification) cycles. A wide breadth of scales (meso\, regional\, basin\, global; paleo\, present\, future) and scientific approaches to these questions are encouraged including observational\, theoretical\, modeling\, and isotopic studies. Finally\, we encourage submissions that work to bridge oceanographic disciplines. \nPrimary Chair:  Patrick A Rafter\, University of California Irvine\, Irvine\, CA\, United States \nCo-Chair:  Robert T Letscher\, University of New Hampshire\, Earth Sciences\, Durham\, NH\, United States and Alexis Pasulka\, California Polytechnic State University \n 
URL:https://www.geotraces.org/event/2018-ocean-sciences-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20170813
DTEND;VALUE=DATE:20170819
DTSTAMP:20260424T135128
CREATED:20160415T123823Z
LAST-MODIFIED:20190912T142043Z
UID:2016-1502582400-1503100799@www.geotraces.org
SUMMARY:Goldschmidt 2017
DESCRIPTION:Goldschmidt 2017Dates: 13 – 18 August 2017Location: Paris\, France \nFor further information: http://goldschmidt.info/2017/ \n GEOTRACES Event: \nPublic release of GEOTRACES Intermediate Data Product 2017Wednesday\, 16 August 2017\, 12h45 – 14h15\, Room 252A/B (Palais des Congrés de Paris) \nBuilding on the success of its first intermediate data product\, released in 2014\, the GEOTRACES programme will deliver the next Intermediate Data Product (IDP2017) at the Goldschmidt Conference in Paris. GEOTRACES is an international study of the marine biogeochemical cycles of trace elements and their isotopes. The IDP2017 presents a remarkable synthesis of data from the Atlantic Ocean and a more complete coverage of data from the Arctic\, Indian\, Pacific and Southern Oceans than was provided in IDP2014. Moreover\, it includes a larger range of biogeochemical parameters. \n \n  \n  \n  \n  \nGEOTRACES and GEOTRACES-relevant sessions: \n \n10i: Cycles of Trace Elements and Isotopes in the Ocean: GEOTRACES and Beyond Monday 14 August and Tuesday 15 August \nConvenors: Tim Conway\, Geraldine Sarthou\, Tianyu Chen\, Gregory de Souza\, Aridane G. González\, Kristen Buck\, Tina van de Flierdt\, Walter Geibert\, Zhimian Cao\, Catherine Jeandel\, Yves Plancherel\, Phoebe Lam \nTrace elements and their isotopes (TEIs) in the ocean are critical for marine life\, regulating ocean biogeochemistry and carbon cycling. TEI distributions also provide insight into ocean ventilation and circulation\, redox states\, productivity and hydrothermal inputs in the present and the past. The GEOTRACES program\, which aims to map the world’s oceans for TEIs\, has facilitated rapid progress\, enabling a coherent picture of TEI cycling to emerge. Accordingly\, in celebration of the launch of the GEOTRACES IDP 2017 at Goldschmidt\, this session aims to bring together studies addressing pressing questions in marine biogeochemistry. We invite submissions on a range of marine biogeochemical themes: (1) Comparing the distribution\, isotopic composition and speciation of the trace metals (Fe\, Zn\, Cd\, Ni\, Cu\, Ba) with the major nutrients (e.g. C\, N\, Si) in order to draw parallels and contrasts\, and especially to determine the role of the Southern Ocean in creating pre-formed signatures. (2) Investigating the oceanic distribution\, composition and interactions of TEI-binding organic ligands\, and their role in metal redox cycling\, distribution and speciation. (3) Investigating how interactions with oceanic boundaries (sediments\, hydrothermal vents\, atmosphere)\, (4) How abiotic/biotic internal cycling influences the distribution of oceanic TEIs\, and investigating TEIs which trace rates and particle scavenging. (5) Integrating multi-proxy GEOTRACES datasets including circulation tracers in order to address longstanding questions in biogeochemistry and paleooceanographic proxy calibrations. We encourage submissions with culture and modeling work to interpret TEI distributions\, as well as submissions combining interactions of different phases (e.g. particulate and dissolved) and multi-element datasets. \n10g: Submarine Groundwater Discharge: Forms\, Delivery\, Timing\, Processes\, Pathways and Scaling of Biogeochemical FluxesTuesday 15 August PM \nConvenors: Hans Dürr\, Nils Moosdorf\, Michael Böttcher\, Hannelore Waska\, Jing Zhang\, Walter Geibert \nSubmarine groundwater discharge (SGD) is now an established factor in marine budgets of nutrients as well as trace elements and their isotopes (TEIs). SGD can form subterranean estuaries (STE) where fresh meteoric groundwater mixes with seawater circulating in the sediment. Processes in the STE and at the sediment-water interface strongly influence the resulting net fluxes to the near-shore. The magnitude\, speciation and spatial variability of these diffuse biogeochemical inputs can have multiple impacts on biological activity in coastal environments and marginal seas\, many of which are considered key areas for regional GEOTRACES projects. However\, the temporal and spatial dynamics of processes determining SGD/STE biogeochemistry are poorly understood\, attempts of upscaling SGD for regional- to continental budgets have been difficult\, and lag behind the development of large-scale hydrogeological models of SGD. We invite contributions by geochemists\, hydrogeologists\, biologists and geophysicists related to: biogeochemistry (experimental and modeling) of SGD/STE from deep aquifers to the sediment-water interface with regards to distribution\, speciation and function of constituents; the dynamics of key biotic and abiotic processes in the STE; resulting net fluxes of SGD of nutrients\, micronutrients and tracers in the near-shore and in marginal seas; the behavior of particulates and their associated TEI distributions along coastal circulation and land-ocean gradients; approaches and strategies that connect multiple temporal and spatial scales. Studies related to regional anthropogenic effects and climate change are also welcome. We expect this session to facilitate joint investigations and cooperation of the regional terrestrial\, marine biogeochemical and ocean/environmental sciences community. \n10h: Non-Conventional Stable Isotopes in the Ocean: Novel Applications\, Technological Advances and Future Applications Wednesday 16 August PM and Thursday 17 AM \nConvenors: Horner Tristan\, Pearce Christopher\, Philip Pogge von Strandmann\, Kathleen Scheiderich\, Juan Carlos Silva-Tamayo \nThe past twenty years have seen an explosion of interest in using non-conventional stable isotope systems (‘non-CHONS’) to understand the relationships between—and temporal evolution of—the input\, internal cycling\, and output of chemical species from the ocean. These isotope systems have proved to be key tracers of Earth’s biogeochemical cycles\, and have provided important breakthroughs in our understanding of chemical fluxes across the major ocean boundaries (e.g. rivers\, atmosphere\, boundary exchange\, hydrothermal vents) as well as (bio)geochemical processes operating within the ocean (e.g. biological uptake and release\, speciation\, scavenging). This session invites contributions that offer novel perspectives using non-conventional isotope systems and the processes that control their cycling between Earth’s major reservoirs in modern and/or past settings. Submissions that present new analytical tools or experiment-based approaches for studying the mechanisms of elemental and isotope fractionation during mineral-fluid interactions\, redox transformations\, or biological cycling are strongly encouraged\, as are those that demonstrate how these techniques can be used to quantify the flux and internal cycling of chemical species in the ocean through time. We also welcome contributions that offer novel perspectives by synthesizing existing data into new conceptual models\, or use isotopic tracer-based approaches to aid constraint of the fluxes of other biogeochemically-cycled elements\, particularly those that integrate over a wide range of spatial and temporal scales. \n10m: Insights into Ocean Processes Through the Application of Radioactive Tracers Tuesday 15 August PM and Wednesday 16 August AM \nConvenors: Paul Morris\, Guizhi Wang\, Virginie Sanial \nThe use of radioactive tracers to investigate ocean processes is an increasingly mainstream component of the techniques available to marine chemists. This so-called “nuclear toolbox” has seen continued development\, from better sampling and measurement technology to smaller sample volumes\, which has opened new avenues of investigation for studying ocean processes. While many of these radioactive tracers occur naturally in the environment\, ocean scientists can also use radioactive tracers released through human activities via intentional releases and accidental events. These radioactive tracers can be applied to a range of time-scales in both local case studies and basin-scale investigations that target both boundary and open-ocean processes. This session welcomes submissions that use radioactive tracers as a primary tool to investigate: (1) fluxes of particulate matter and dissolved materials\, (2) water mass mixing and mixing rates\, (3) processes that occur at the ocean boundaries (including coastline\, seabed\, and surface)\, and (4) studies that attempt to constrain geochemical budgets. Contributions that address method development\, novel applications of well-established tracers to new systems\, transport and fates of anthropogenic radionuclides in the ocean\, and issues that arise from the inherent integrating properties of radioactive tracers are also welcomed. \n10n: Nutrient Biogeochemistry in the Ocean: Past\, Present and FutureWednesday 16 August \nConvenors: Scott Wankel\, Sinhué Torres-Valdés\, Kimberly Popendorf\, William Haskell\, Christian März\, Damien Cardinal\, Wiebke Mohr\, C. Mark Moore\, Francois Fripiat\, Xingchen Wang\, Jia-Zhong Zhang \nThe availability of nutrients\, specifically nitrogen (N)\, phosphorus (P) and silicon (Si)\, exerts strong control on net primary production in the oceans\, the efficiency of carbon export from the euphotic zone\, and even the composition of the atmosphere. While the cycling of these elements is intimately coupled\, each elemental cycle possesses distinct characteristics regarding oceanic sources and sinks\, modes of internal recycling\, residence times and bioavailability. Indeed\, dynamics of individual nutrients diverge in important ways\, leading to formation of distinct regimes in both modern and past ocean systems. For example\, our understanding of specific processes (such as N2 fixation) has greatly expanded over the past two decades including delineation of new habitats\, description of new organisms\, and identification of new lifestyles. Nevertheless\, the relative roles of specific groups in various regions of the ocean\, their spatial and temporal variability\, and factors influencing their activity and distribution remain unclear. Furthermore\, while clear changes are often observed in response to contemporary climate change (including ocean warming\, acidification and deoxygenation)\, responses to such alterations and consequences for ecosystem functioning are far from understood. This session brings together new analytical and modeling insights to marine environments advancing our fundamental understanding of nutrients and their importance to the Earth system of the past\, present and future. We encourage submissions highlighting novel approaches (especially application of natural abundance and tracer-level stable isotopes) and those dealing with inter-elemental (de)coupling\, multiple spatial scales (cells to oceans)\, and/or multiple temporal scales – from geologic past to the future. \n17g: Paleoceanographic and Paleoclimate proxies: Their standing on Elderfield’s proxy development CurveThursday 17 August \nConvenors: Marie-Laure Bagard\, Marie Boye\, Oscar Branson\, Sambuddha Misra\, Guillaume Paris\, Kauzyo Tachikawa \nGeochemical proxies are essential tools to understand the evolution of seawater chemistry\, climate of the past\, and cycling of material between the different surface and deep reservoirs of the planet. Professor Henry (Harry) Elderfield helped develop numerous chemical tracers in the sedimentary record of ocean circulation\, isotope systems and seawater chemistry and temperature\, deeply influencing our understanding of chemical oceanography\, atmospheric interactions\, paleoclimate\, and biomineralization. Harry noted that a proxy develops through phases of optimism\, to pessimism and eventually to realism as our understanding of the applicability and limitation of a proxy evolves – the infamous ‘Elderfield Curve’. We invite submissions that critically evaluate or apply new and established proxies of past-climate and seawater chemistry and redox state\, how they are influenced by processes such as diagenesis\, and consider or alter their position on the Elderfield Curve. Contributions are invited from studies that utilize new (e.g. U/Ca; Na/Ca; Li/Mg ∂7Li\, ∆47) and established (e.g. Mg/Ca; B/Ca; ∂11B\, ∂18O\, eNd\, uk’37\,) proxies for paleoclimate and paleoceanographic studies\, including proxies used for deep time reconstructions (e.g. Fe-speciation\, ∂98Mo\, ∂53Cr). The focus will be on studies that outline novel and multi-proxy applications from a range of sedimentary phases\, investigate the mechanisms behind them\, notably through laboratory experiments and modern observations (GEOTRACES\, porewaters\, continental input\,…) or highlight possible limitations of established ones. \n 
URL:https://www.geotraces.org/event/goldschmidt-2017/
CATEGORIES:GEOTRACES Relevant Special Sessions
ATTACH;FMTTYPE=image/jpeg:https://www.geotraces.org/wp-content/uploads/2017/06/geotraces_logos_IDP2017_logo.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20170709
DTEND;VALUE=DATE:20170715
DTSTAMP:20260424T135128
CREATED:20161216T132357Z
LAST-MODIFIED:20161216T132357Z
UID:2045-1499558400-1500076799@www.geotraces.org
SUMMARY:IUPAC 2017 - World Chemistry Congress
DESCRIPTION:IUPAC 2017 – World Chemistry CongressDates: 9-14 July 2017Location: Sao Paulo\, BrazilFor further information: http://www.iupac2017.org/ \nAbstracts are due on January 8\, 2017 \nSession description: \nEnergy\, Water and Environmental Sciences (EE)http://www.iupac2017.org/symposia.php#ee \nNatural waters contain a large number of chemicals reflecting rapid global dissemination of novel substances\, including a full range of technology-critical elements (e.g.\, platinum group and rare earth elements) and emerging contaminants (e.g.\, PFAAs\, hormones and phthalates) employed to improve the production of energy and/or commodities\, especially due to the ever-expanding list of new technologies. The settlement of smart grids for electricity distribution together with the development of electric vehicles and renewable energy sources has enlarged a rising demand for advanced energy conversion and storage systems. Rechargeable batteries will continue to rely on Li-ion chemistry; however\, post Li-ion systems — such as Li-S\, Li-air\, Na-ion — are expected to reach the stage of devices. Also these developments are accompanied by the up growth of electrochemical capacitors\, fuel cells\, metal-air batteries. Solar cells\, biofuels\, water splitting\, hydrogen production and CO2 reduction are also important topics playing a leading role in the relation between energy and friendly environmental ways to assure a high efficiency of conversion and storage systems. To go further with sustainable technology\, the understanding of the fundamental concepts of materials properties and the interactions with their environment\, will be the key to find solutions which would satisfy the new society´s energy demands with a deep ecological concern. Therefore\, this symposium is devoted to recent progress in fundamental science related to rechargeable batteries and electrochemical capacitors\, fuel Cells\, metal-air batteries\, solar cells\, biofuels\, water splitting\, hydrogen production and CO2 reduction. Additionally\, this symposium will also focus on processes controlling the distribution\, fate\, bioavailability and environmental risks of technology-critical elements and emerging contaminants associated with the development of new products and technologies. \nSymposium Organizers: Roberto M. Torresi (IQ-University of São Paulo\, São Paulo\, Brazil – rtorresi@iq.usp.br) and Daniel Belanger (Département de chimie\, Faculté des Sciences\, University of Quebec\, Montreal\, Canada – belanger.daniel@uqam.ca).Co-organizer: Vanessa Hatje (CIEnAm- Universidade Federal da Bahia\, Bahia\, Brazil – vanessa@pq.cnpq.br) \nTopics \n5.7 Organic and inorganic contaminants in the environment: occurrence\, sources\, fate and impacts5.8 Trace elements cycling\, processes and fluxes across interfaces5.10 Environmental impact of emerging technologies (E-waste- an emerging global challenge and Global Environmental Challenges of Nanomaterials) \nConfirmed keynote speakers include: Antonio Cobelo\, Peter Croot\, Catherine Jeandel and Gideon Henderson \n 
URL:https://www.geotraces.org/event/iupac-2017-world-chemistry-congress/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20170509
DTEND;VALUE=DATE:20170514
DTSTAMP:20260424T135128
CREATED:20160707T144306Z
LAST-MODIFIED:20160707T144306Z
UID:2032-1494288000-1494719999@www.geotraces.org
SUMMARY:2017 PAGES Open Science Meeting
DESCRIPTION:2017 PAGES Open Science Meeting Dates: 9-13 May 2017Location: Zaragoza\, Spain \nFor further information: http://www.pages-osm.org \nGEOTRACES session: \n12. Trace elements and their isotopes as geochemical proxies of past ocean conditions \nCo-conveners: Catherine Jeandel (catherine.jeandel@legos.obs-mip.fr)\, Robert Anderson (boba@ldeo.columbia.edu)\, Susan Little (s.little@imperial.ac.uk)\, Thomas Marchitto (thomas.marchitto@colorado.edu) and Daniel Sigman (sigman@princeton.edu). \nTrace elements and their isotopes archived in marine sediments\, corals\, microfossils\, authigenic minerals and other media have been exploited widely to reconstruct past ocean conditions\, including\, but not limited to: temperature\, nutrient concentrations\, ocean circulation\, biological productivity and export production\, dissolved inorganic carbon system parameters\, and external sources of material to the ocean\, for example as dust or via boundary exchange. Despite this importance\, many proxies of necessity have been calibrated in a rather ad hoc way. Many calibrations use samples that do not necessarily represent modern conditions\, or they have been calibrated solely in the lab. Calibration is often empirical and based on only partial understanding of the processes that relate the measurable proxy to the environmental variable that it encodes. \nThere is therefore an urgent need for more thorough assessment of geochemical proxies to fully understand the uses and limitation of present proxies\, and to develop and reliably calibrate new proxies for environmental variables that are presently difficult to reconstruct. The wealth of new and high-resolution trace element and isotope data generated by GEOTRACES as well as by contemporary initiatives offers an unprecedented opportunity to assess our understanding of geochemical proxies. This session invites presentations that exploit modern ocean observations of trace elements and their isotopes to critically examine and improve the application of geochemical proxies of past ocean conditions. \nInvited Speakers: Chris Hayes (Univ. of Southern Mississippi)\, Tristan Horner (WHOI)\, Kazuyo Tachikawa (CEREGE) and Jimin Yu (Australian National University).
URL:https://www.geotraces.org/event/2017-pages-open-science-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20170226
DTEND;VALUE=DATE:20170304
DTSTAMP:20260424T135128
CREATED:20160415T122952Z
LAST-MODIFIED:20160415T122952Z
UID:2014-1488067200-1488585599@www.geotraces.org
SUMMARY:ASLO 2017\, Aquatic Sciences Meeting
DESCRIPTION:ASLO 2017\, Aquatic Sciences MeetingDates: 26 February – 3 March 2017Location: Honolulu\, Hawaii\, USA \nFor further information: http://www.sgmeet.com/aslo/honolulu2017/default.asp \n GEOTRACES sessions: \n004 – Biogeochemical Cycling of Trace Elements and Isotopes in the Arctic Ocean \nTrace elements can play a dual role in the ocean either as essential micronutrients (e.g.\, Co\, Fe\, Zn)\, or as toxicants (e.g.\, As\, Cu\, Hg)\, and can affect biological productivity\, carbon cycling and the emission of climatically important trace gases. In addition\, the distribution and isotopic composition of many trace elements and gases provide information on biogeochemical and physical processes. The Arctic Ocean\, in particular\, is undergoing rapid and profound transformation attributed to climate change. Easier access and accelerated resource exploitation are also expected in the coming years. It is therefore timely to examine more thoroughly the distribution and cycling of trace element and isotopes (TEI)\, and dissolved gases in the Arctic Ocean and to establish their potential role in controlling or recording rapidly changing oceanic processes. To that end\, after six years of collaborative planning\, the international GEOTRACES program undertook a coordinated study of TEIs\, dissolved gases\, and biological productivity in the Arctic in summer-fall 2015\, comprising three funded icebreaker programs from Germany\, Canada\, and the United States. This session seeks presentations on all aspects of this work and their relevance to Arctic Ocean processes from the GEOTRACES expeditions and other related field and laboratory efforts. \nORGANIZERS \nGreg Cutter\, Old Dominion University\, gcutter@odu.eduRoger Francois\, University of British Columbia\, rfrancoi@eos.ubc.caDavid Kadko\, Florida International University\, dkadko@fiu.eduWilliam Landing\, Florida State University\, wlanding@fsu.eduMichiel Rutgers Van der Loeff\, Alfred Wegener Institute\, Mloeff@awi.de \n  \n025 – Linking atmospheric deposition to the biogeochemistry of aquatic and marine systems \nAtmospheric deposition of lithogenic\, anthropogenic\, and marine aerosols is an important transport pathway for nutrients and contaminants to aquatic watersheds and the surface ocean. Constraining local\, regional\, and global atmospheric deposition fluxes and the bioavailability and toxicity of aerosol-sourced elements and compounds is essential to furthering understanding of global biogeochemical cycles. Aerosol emission\, transport\, and deposition processes are\, in part\, a function of changes in land use and anthropogenic emissions\, as well as short-term meteorological events and long-term climatic change on a global scale. Hence the study of system responses will improve our current understanding and facilitate the prediction of future impacts. This session invites contributions from studies of atmospheric deposition in marine and aquatic environments including\, but not limited to\, characterization of aerosol composition\, quantification of atmospheric deposition fluxes and aerosol fractional solubility\, assessment of the fate of aerosol-sourced compounds\, and the biological and chemical response to deposition. Contributions from global and regional scale field observations\, laboratory studies\, and modeling efforts are welcomed. \nORGANIZERS \nClifton Buck\, Skidaway Institute of Oceanography\, clifton.buck@skio.uga.eduRachel Shelley\, LEMAR-Universite de Bretagne Occidentale\, rachel.shelley@univ-brest.fr \n  \n029 – REE marine geochemistry in the 21st century: A tribute to the pioneering research of Henry Elderfield (1943-2016) \nHenry Elderfield had a long and multi-faceted career investigating the marine biogeochemistry of trace metals and his greatest accomplishment may be his groundbreaking measurements and interpretations of the oceanic distribution of rare earth elements (REEs). He helped revolutionize REE analysis of natural waters and produced some of the first vertical profiles in seawater by replacing painstaking chemical separations and neutron activation with isotope dilution mass spectrometry of 10 REEs together. In these days of automated in-line extraction and ICP-MS\, it is hard to recall the amount of time and effort involved in measuring picomolar REE concentrations just 30 years ago. To honor Henry’s memory we invite the next generation of aqueous geochemists to submit original work on REE cycling in the oceans. Our session will focus on the rapidly expanding dataset of REE concentrations and isotopic ratios from the GEOTRACES program and its use in the construction and testing of global marine mass balance and transport models. Studies of sources\, sinks\, and processes that create the boundary conditions for such modeling\, for instance particle scavenging and speciation\, hydrothermal and groundwater inputs\, and REE exchange in margin sediments\, estuaries\, and at the air-water interface are also welcome. \nORGANIZERS \nKaren H. Johannesson\, Tulane University\, kjohanne@tulane.eduJohan Schijf\, UMCES/Chesapeake Biological Laboratory\, schijf@cbl.umces.edu \n GEOTRACES Early Career Event: \nArctic-GEOTRACES Early Career Researcher Networking Event (ASLO 2017)26 February 2017 – 13h – Room: 305 A/B \nOver the 2015 and 2016 field seasons\, the international GEOTRACES program undertook a coordinated effort to better understand the distribution\, biogeochemical cycling\, and climate sensitivity of trace elements and isotopes (TEIs) within the Arctic Ocean. Three successful cruises were carried out in 2015 by Canadian\, US\, and German programs\, with follow-up sampling in 2016 by the German team. This effort brought together cross-disciplinary researchers from more than 12 countries working not only in the field of trace metal geochemistry\, but also observationalists and modelers studying phytoplankton physiology\, air-sea gas fluxes\, carbon and nutrient cycling\, ocean mixing\, sea ice\, and rivers. As a result\, new data sets are emerging to expand our understanding of the TEIs that regulate\, or serve as tracers for\, critical biogeochemical and physical processes within the Arctic Ocean. \nMore than 75 Early Career Researchers (ECRs: students\, postdocs and early career scientists) participated in the three Arctic Ocean cruises carried out in 2015\, with many more on the sidelines processing samples\, interpreting observations\, and developing ocean models. The goal of this workshop will be to provide a networking event for Arctic GEOTRACES ECRs who will be attending the ASLO Aquatic Sciences meeting. This forum will provide a bridge to connect ECRs between programs and establish new connections for participants to carry forward into their future careers within the GEOTRACES community. \nIdeal audience: “Early Career” Arctic GEOTRACES program participants\, including graduate students\, postdocs\, and new faculty \nTo register: All participants should send an RSVP before 25th of January. The way to do this is by filling up the following link: https://docs.google.com/spreadsheets/d/1D5a0lNLItm5x9X0bQMniutFEyOclUkxpspqb7ERb-8I/edit?usp=sharing \nAgenda (~3 hr Workshop): \n30 min (7-8 min each cruise): Introduction to each of the US\, Canadian\, German cruises\, and the focus\, cruise track\, and participants of each cruise \n30 min: 30 second introductions from each attendee about their role in the program (1 slide). \n60 min: breakout groups organized by theme/measurement type (to be decided). \n          * Goals of breakout groups: determine areas for collaborations\, emerging research themes\, future studies \n30 min: breakout group recap\, future plans \n30 min: Networking\, drinks and snacks!
URL:https://www.geotraces.org/event/aslo-2017-aquatic-sciences-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20170109
DTEND;VALUE=DATE:20170112
DTSTAMP:20260424T135128
CREATED:20160627T131247Z
LAST-MODIFIED:20160627T131247Z
UID:2031-1483920000-1484179199@www.geotraces.org
SUMMARY:Third Xiamen Symposium on Marine Environmental Sciences (XMAS)
DESCRIPTION:Third Xiamen Symposium on Marine Environmental Sciences (XMAS)Dates: 9-11 January 2017 Location: Xiamen\, China \nFor further information: http://mel.xmu.edu.cn/conference/3xmas \n GEOTRACES Session: \nSpecial Session 4: Biogeochemical Cycling of Trace Elements in the Ocean: GEOTRACES and Beyond \nConveners: \nMartin Frank\, GEOMAR Helmholtz-Center for Ocean Research Kiel\, GermanyJing Zhang\, University of Toyama\, JapanZhimian Cao\, Xiamen University \nTrace elements in the ocean are critical for marine life serving as regulators of ocean biogeochemistry including marine ecosystem dynamics. However\, the mechanisms controlling the biogeochemical cycling of these elements and how they influence the functioning of ocean ecosystems remain elusive. The GEOTRACES program\, which aims to map the world’s oceans for trace elements and isotopes\, has facilitated rapid progress in this field enabling a coherent landscape of oceanic trace element cycling to emerge. This session seeks to bring together recent studies in the spirit of the GEOTRACES program. We invite abstracts on all aspects of oceanic dissolved and particulate trace element distributions and speciation\, as well as their isotopes\, including their application to reconstructing marine processes such as ocean circulation\, redox conditions and paleoproductivity. We also encourage submissions using lab culture experiments and modeling approaches to constrain the biological and chemical processes that determine the distributions of trace elements in seawater. \n 
URL:https://www.geotraces.org/event/third-xiamen-symposium-on-marine-environmental-sciences-xmas/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20161105
DTEND;VALUE=DATE:20161110
DTSTAMP:20260424T135128
CREATED:20160606T073706Z
LAST-MODIFIED:20160606T073706Z
UID:2025-1478304000-1478735999@www.geotraces.org
SUMMARY:CBO 2016\, Congresso Brasileiro de Oceanografia
DESCRIPTION:VII Congresso Brasileiro de Oceanografia (CBO 2016) Dates: 5 – 9 November 2016Location: Salvador – Bahia\, Brasil \nFor further information: http://www.cbo2016.org/ \nGEOTRACES Special Sessions: \n*MS5 – GEOTRACES – BrasilCoordination: Vanessa Hatje (UFBA) \nThe aim of this session is to discuss the effects of biology and climate in the biogeochemistry of the trace elements and their isotopes\, in the interfaces between the continent\, the oceans and the atmosphere. \n  \nTraining Workshop: \n \n*MC11 – Ocean Data View para iniciantesSpeaker: Leticia C. da Cunha (UERJ)06/11/2016   Fee: R$100\,00 \nThis workshop is devoted to under-graduate\, post-graduate and scientists with no experience in the open access software Ocean Data View (ODV) software\, with a focus on the GEOTRACES data (trace elements) and SOCAT (Surface Ocean CO2 Atlas). \n  \n 
URL:https://www.geotraces.org/event/cbo-2016-congresso-brasileiro-de-oceanografia/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20160905
DTEND;VALUE=DATE:20160909
DTSTAMP:20260424T135128
CREATED:20160310T111310Z
LAST-MODIFIED:20160310T111310Z
UID:2008-1473033600-1473379199@www.geotraces.org
SUMMARY:Challenger Society 2016 Conference - Oceans and Climate
DESCRIPTION:Challenger Society 2016 Conference – Oceans and ClimateDates: 5-8th September 2016Location: Liverpool\, UK. \nFor further information: https://www.liverpool.ac.uk/challenger-conference-2016/ \nGEOTRACES session: \nTrace element and isotope exchange at ocean boundariesConveners: Will Homoky (Oxford)\, Torben Stichel (Southampton) & Susan Little (Imperial) \nTrace elements and their isotopes (TEIs) play a key role in the ocean\, as micronutrients and toxicants for primary production\, as indicators of anthropogenic inputs\, as tracers of modern and past ocean circulation\, and as proxies of the paleooceanic environment. A variety of ocean boundaries mediate the exchange of TEIs between the Earth and ocean\, including the atmosphere\, rivers\, groundwater\, glaciers\, sediments and sub-aqueous volcanism. However\, for many TEIs we have very little knowledge about the rates and mechanisms controlling their exchange. We invite studies of observed and/or modelled exchange of TEIs at ocean boundaries that provide new insights into these processes. \n 
URL:https://www.geotraces.org/event/challenger-society-2016-conference-oceans-and-climate/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20160626
DTEND;VALUE=DATE:20160702
DTSTAMP:20260424T135128
CREATED:20150907T073403Z
LAST-MODIFIED:20150907T073403Z
UID:1961-1466899200-1467417599@www.geotraces.org
SUMMARY:Goldschmidt 2016
DESCRIPTION:Goldschmidt 2016Dates: 26 June – 1 July 2016Location: Yokohama\, Japan \nThe abstract deadline is 26 February 2016.  \nFor further information: http://goldschmidt.info/2016/ \n  \nGEOTRACES Workshop: \nExploring GEOTRACES data with Ocean Data View     ***For more information please go to the Workshop website*** \nOrganizers: Jing Zhang\, Reiner Schlitzer\, Elena Masferrer Dodas \nThis hands-on workshop will teach standard and advanced ODV methods for the exploration and scientific analysis of environmental data. The GEOTRACES Intermediate Data Product 2014 (IDP2014) will be used as example dataset. Participants will learn how to create publication-ready maps\, property-property plots and sections and how to apply simple or advanced station and sample filters. In addition\, an overview over the wide range of derived variables available in ODV will be given and a number of variables often needed in geochemical research will be described and applied. This includes aggregation\, interpolation\, unit conversion\, differentiation and integration. Note that creation of spinning 3D scenes is beyond the scope of this workshop. The workshop starts with presentations of general software concepts and capabilities\, followed by hands-on-sessions for the creation of specific plot types and scientific discussion rounds explaining the findings. Participants are encouraged to bring their own laptop computer with ODV (http://odv.awi.de/) and the IDP2014 dataset (http://www.bodc.ac.uk/geotraces/data/idp2014/) already installed. Specific requests by participants prior to the workshop or during the event are welcome. \nGEOTRACES sessions: \n12d: Oceanic Cycling of Trace Elements Using Elemental\, Isotopic\, and Modeling Approaches: Geotracers and Beyond… \nConvenors: Tim Conway\, Tristan Horner\, Jessica Fitzsimmons\, Hajime Obata\, Catherine Jeandel\, Andrew Bowie\, Phoebe LamKeynote: Sylvia Sander (University of Otago) \nAbstract: The distribution of trace elements and their isotopes in the oceans results from a myriad of processes\, with these elements serving critical roles as regulators of ocean biogeochemistry including marine ecosystem dynamics. Despite this\, we still lack a complete understanding of not only the mechanisms by which these elements influence the functioning of ocean ecosystems\, but also the controls on the transfer of these elements at oceanic interfaces (e.g. atmospheric\, ice\, sedimentary\, shelf\, rivers\, and hydrothermal interfaces)\, and the processes that transform these critically important elements within the ocean interior. Recent concerted international endeavors such as the GEOTRACES Program are changing this picture and enabling a coherent landscape of oceanic trace element cycling to emerge. Accordingly\, this session seeks to bring together scientists from recent oceanographic expeditions to integrate results within and between ocean basins. We invite abstracts on all aspects of oceanic dissolved and particulate trace element distribution and speciation\, and we encourage submissions that apply novel analytical methods to understand elemental and isotopic (stable and radiogenic) distributions in the oceans\, including those that address metal speciation\, ligand binding\, and size-fractionated distributions. We especially encourage submissions that utilize modeling approaches which draw on new datasets and/or which aim to constrain the biological and chemical processes that determine the distributions of trace elements in seawater in the context of large-scale physical mixing\, or past and present ocean circulation\, redox conditions and hydrothermal activity. \n12f: Elemental and Isotopic Marine Biogeochemistry at a Range of Scales: The Global Ocean\, Marginal Seas\, and Polar Atmosphere–Sea Ice–ocean Systems \nConvenors: Susan Little\, Daiki Nomura\, Gregory de Souza\, Markus Frey\, Delphine Lannuzel\, Jun Nishioka\, Patrick Rafter\, Martin VancoppenolleKeynote: Daniel Sigman (Princeton University) \nAbstract: We invite observational and modelling studies of marine elemental and isotopic biogeochemical cycling at a range of spatial scales. Our broad purview includes large-scale studies of macro- (N\, Si) and micronutrients (e.g. Zn\, Fe\, Cu\,) and other biogeochemically-cycled elements (e.g. Ba\, Cd)\, as well as regional studies with a focus on the biogeochemistry of the the polar sea-ice zone (Arctic and Antarctic). By providing an interdisciplinary forum\, this session aims to find parallels (and contrasts) between the isotope systems of macro- and micro-nutrients\, and to better understand the components\, drivers\, processes and interfaces related to the cycling of carbon\, nutrients\, and trace elements and their isotopes (TEIs) within the polar atmosphere–sea ice–ocean system. Studies covering the spectrum of possible scales from whole-ocean budgets to molecular-scale fractionation are solicited\, especially those that form a part of the GEOTRACES programme. In particular\, we invite studies attempting to pick apart the roles of the physical circulation and internal oceanic cycling (e.g. biological uptake\, scavenging\, speciation) on tracer distributions\, including the role of particulates and their associated TEI distributions. Submissions from the polar hydrosphere\, atmosphere and cryosphere are solicited\, including those related to polar climate change\, river-ocean interaction\, snow and sea ice physics and biogeochemistry\, polar atmospheric chemistry and ocean acidification. \n16d: Models of Life and Geochemistry: Integrating Large-Scale Datasets into Global Climate Models \nConvenors: Seth John\, Tatiana Ilyina\, Andy Ridgwell \nAbstract: ew global datasets and global modeling techniques can be brought together to study questions of biological\, geochemical\, and climatic importance. This session focuses on the utilization of large-scale datasets within a variety of modeling frameworks. Recent global datasets include shipboard ocean chemical observations such as GEOTRACES and WOCE\, shipboard time-series programs\, and sensor data such as Argo\, mooring\, and remote sensing data. Each of these observational datasets can be studied within the context of various global modeling techniques including coupled GCMs and high-resolution regional models as well in conjunction with relatively newly developed and numerically-efficient global-scale tools such transport matrix models (TMMs) and decadal predictions systems. We seek contributions from scientists working across a broad spectrum of global biogeochemical cycles including carbon\, nitrogen\, oxygen\, nutrient\, trace-metal\, and particle distribution in the oceans\, and the application of such tracers for constraining ocean circulation as well as sources and sinks of biologically and geochemically important elements and their variability in the ocean. We also encourage submissions rooted in modern geochemical observations that address future biogeochemical changes in the ocean by forward modelling. \nGEOTRACES related-sessions: \n14j: Linked Landscapes: Biogeochemical Connections Among Headwater Streams\, Rivers\, Estuaries and Coastal Ecosystems \nConvenors: Nobuhito Ohte\, David Widory\, Scott Wankel\, Taylor Maavara\, Philippe Van Cappellen\, Pierre Regnier\, Ronny Lauerwald\, Dipankar Dwivedi\, Carl Steefel \nAbstract: Rivers and their surrounding landscapes are the great integrators of the freshwater cycle and they represent the main pathway for biogeochemical transfers from land to ocean. An understanding of the mechanisms governing the linkages throughout the aquatic continuum is crucial for predicting ecosystem function\, water quality\, greenhouse gas emissions and the role of the coastal ocean in global carbon budgets. The structure and function of riverine\, estuarine and coastal ecosystems are strongly affected by surrounding terrestrial ecosystems through a combination of hydrologic and biogeochemical dynamics and feedbacks\, including hyporheic exchange. However\, a mechanistic understanding of the nature of these linkages and feedbacks is lacking\, particularly at the watershed- to global-scales. Investigating these knowledge gaps is complicated by the unprecedented rates of change over the last 100 years to the absolute and relative fluxes of elements such as C\, N\, P\, S\, Si\, Fe and Ca\, delivered by rivers to lakes and coastal zone. Here\, we invite observational and theoretical contributions that identify and characterize: 1) biogeochemical linkages among terrestrial\, river and coastal ecosystems\, 2) the influence of local settings (geology\, hydrology\, climate\, ecotypes\, etc.) on these biogeochemical linkages\, and 3) the time-dependent and coupled responses of riverine biogeochemical fluxes and transformations to anthropogenic drivers. Specific topics may include\, but are not limited to\, eutrophication and nutrient loading in aquatic systems\, internal nutrient recycling\, nutrient elimination/mitigation\, river damming and channelization\, multi-scalar properties of the hyporheic exchange flows that impact nutrient cycling\, and impacts on trace gas fluxes (e.g.\, methane\, nitrous oxide). \n15b: Radionuclide Fate and Transport after the Fukushima Accident: Identifying What We Have Learned and Remaining Knowledge Gaps \nConvenors: Anne Mathieu\, Daniel I. Kaplan\, Yoshiho Takahashi\, Seigo Amachi\, Fan Qiaohui\, Yuichi Onda\, Chris Yeager\, Tsuyoshi Thomas Sekiyama\, Mizuo KajinoKeynote: Yuichi Onda (Tsukuba University) \nAbstract: In 2011\, an earthquake of magnitude 9\, followed by a tsunami\, triggered a major nuclear accident at the Fukushima Daiichi Nuclear Power Plant that released radionuclides in the environment. Five years after the Fukushima disaster\, a milestone has been reached. One of the key conclusions made to date\, is that while many studies have identified similarities to other nuclear accident sites\, such as Chernobyl\, studies have also revealed new insights into radionuclide transport owing to the circumstances surrounding the Fukushima accident\, such as the direct injection of radioactivity into the ocean. While significant progress has been made\, many uncertainties remain. The objective of this session is to not only present advances\, but also identify key knowledge gaps that are limiting further advancement in these areas of research. Any research on the fate and transport of radionuclides related to the Fukushima accident is welcome in this session. In particular\, papers are encouraged that integrate monitoring\, experimental\, and/or modeling approaches to add perspective and understanding to the recent accident in Fukushima. Relevant topics also include radionuclide biogeochemistry influencing transport in terrestrial and marine systems. \n15e: Isotope Approaches to Characterize the Impacts of Natural Resource Development and Other Human Activities on the Environment \nConvenor: Millot RomainKeynote: Nathaniel R. Warner (Pennsylvania State University) \nAbstract: Recent analytical developments of isotope systematics\, for instance metals and metalloids (Hg\, Cr\, Zn\, Cu\, Pb\, Cd\, Tl\, Ag\, Sn\, U\, Fe\, Se\, Mo\, U\, Ra\, Th) in the Environment\, have experienced an unprecedented increase over the past few years. It is well known that: 1- metals mining and both conventional and unconventional hydrocarbon extraction can have a considerable environmental footprint\, 2- within the framework of the exploitation of unconventional gases and oil\, chemical elements potentially toxic to humans and wildlife (called the radionuclides toxic metals: RTM) pollute the flowback\, 3- more generally the contribution of human activities such as industries\, agriculture and various domestic inputs\, becomes more and more significant in natural systems.The aim of this session is to explore methods\, indicators and research applications using innovative isotope systematics of elements such as H\, C\, N\, O\, S and Hg\, Zn\, Cr\, Cu\, Cd\, Mo\, Ag\, Se\, that in fine will provide: i) stronger constraints on the origin(s) and ii) a better characterization of the processes controlling the budgets of toxic metals and compounds in the Environment (e.g.\, soil\, sediment\, water\, air) at local and global scales\, in addition to transfer of these constituents to the food chain and potential effect on human health. \n15l: Advances in Mercury Biogeochemistry \nConvenors: Colin Cooke\, Jeroen SonkeKeynote: Daniel Obrist (DRI\, Reno Nevada\, USA) \nAbstract: Mercury is a global pollutant that\, once converted to methylmercury\, can negatively impact human health. Present-day anthropogenic emissions of mercury are approximately an order of magnitude greater than natural emissions\, and the chemical speciation of Hg dramatically affects its mobility and toxicity. Understanding the environmental cycling of mercury is paramount if reductions to mercury exposure are to be achieved. We invite presentations focused on field\, laboratory and modeling studies of the sources\, transport and fate of mercury in Earth surface environments (atmosphere\, oceans & continents)\, including human exposure. We particularly welcome the use of novel approaches including but not limited to genomics\, enriched Hg isotopes\, stable Hg isotopes\, spectroscopy\, 3D coupled models\, Hg-Se interactions etc. \n16a: Tracing Ocean Circulation – Past and Present \nConvenors: Ruza Ivanovic\, Tina van de Flierdt\, David WilsonKeynote: Geoffrey (Jake) Gebbie (Woods Hole Oceanographic Institution) \nAbstract: Ocean circulation is an important part of the Earth system\, playing a key role in controlling or responding to climate change. With limited direct observations for ocean currents and mixing\, geochemical tracers are a valuable tool for reconstructing ocean circulation\, past and present. Increasingly\, such tracers are being incorporated into complex numerical climate models\, the observational database is being expanded\, and better knowledge of what influences the geochemical archives is being gained. These recent improvements in modelling and measuring tracers enable a more thorough understanding of ocean-climate interactions on a range of timescales. For this session\, we invite contributions that use measured and/or modelled geochemical tracers to constrain ocean dynamics in the past and present. We particularly encourage submissions that link changes in ocean circulation and mixing with surface climate.
URL:https://www.geotraces.org/event/goldschmidt-2016/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20160221
DTEND;VALUE=DATE:20160227
DTSTAMP:20260424T135128
CREATED:20140416T094200Z
LAST-MODIFIED:20190912T142043Z
UID:1900-1456012800-1456531199@www.geotraces.org
SUMMARY:2016 Ocean Sciences Meeting
DESCRIPTION:2016 Ocean Sciences Meeting Dates: 21-26 February 2016Location: New Orleans\, Louisiana\, USA. \nFor more information: http://osm.agu.org/2016/ \nGEOTRACES and GEOTRACES-related Town Halls:  \nTown Hall “Opportunities to Strengthen Your Science (and Proposals) using GEOTRACES Data”  \nThursday\, February 25\, 2016: 6:30 PM – 7:30 PMLocation: Ernest N. Morial Convention Center\, 228-230   \nDescription: GEOTRACES released its first intermediate data product ( IDP2014)\, featuring dissolved trace elements and their isotopes\, during the 2014 Ocean Science meeting. The next data product (IDP2017) will more than double the amount of data and number of variables\, including particulate elements. This town hall will: 1) Inform the community about strategies to access\, download and manipulate data from IDP2014 and provide preliminary information about IDP2017; 2) Seek feedback from users of IDP2014 to improve IDP2017 and make it as user-friendly as possible; and 3) Present the outcome of the first Iron-Model Intercomparison Project (FeMIP)\, in which comparison to GEOTRACES data allowed an unprecedented assessment of model performance.  \n \nTowards a standard\, user-friendly chemical speciation model for seawater and estuarine waters \nMonday\, February 22\, 2016 — 12:45-1:45 pmLocation: Ernest N. Morial Convention Center\, 228-230 \nThere is at present no community-agreed model for calculating speciation – particularly of key trace metals\, the carbonate system\, and including the various definitions of pH – in oceanic and estuarine environments. Consequently\, chemical speciation calculations are often of uncertain accuracy\, and are neither traceable nor repeatable by others. SCOR Working Group 145 aims to (i) develop an internationally agreed speciation model based on the Pitzer equations to address these problems\, and (ii) make this model available through a user-friendly web tool. This Town Hall meeting will present the draft scope of the model and seek comments from potential users. \n GEOTRACES-sessions: \nAtmospheric deposition and ocean biogeochemistry \nMonday\, February 22\, 2016\, 228-230: 8-10 am\, Poster Hall: 4-6 pm \nPrimary Chair: Ana M Aguilar-Islas\, University of Alaska Fairbanks\, Fairbanks\, AK\, United StatesChairs: Clifton S Buck\, Skidaway Institute of Oceanography\, Savannah\, GA\, United States and Meredith Galanter Hastings\, Brown Univ-Geological Sciences\, Providence\, RI\, United States \nSession Description: \nAtmospheric deposition of marine\, lithogenic and anthropogenic aerosols is an important transport pathway for nutrients and contaminants to the surface ocean. Constraining local\, regional and global atmospheric deposition flux estimates and the bioavailability of aerosol-derived elements and compounds is essential for furthering understanding of ocean biogeochemistry. This transport pathway acts as an important chemical bridge between the lithosphere and hydrosphere linking major biogeochemical cycles. Aerosol emission\, transport and deposition processes are\, in part\, a function of global change related to changes in land coverage\, anthropogenic emissions and climate. Hence the study of ocean responses will improve our ability to predict future impacts. The GEOTRACES international program includes objectives related to the atmospheric input of trace elements and isotopes to accomplish its goal. Other programs\, such as SOLAS and CLIVAR\, continue to make significant contributions as well. This session invites contributions from studies of atmospheric deposition in the marine environment\, including observations of atmospheric deposition fluxes\, aerosol composition\, aerosol fractional solubility\, the fate of aerosol-derived compounds and the biological and chemical response to deposition within the surface ocean. Contributions from global and regional scale field observations\, laboratory studies and modeling efforts are welcomed. \nThe role of particles in the cycling of trace elements and their isotopes in the ocean \nTuesday\, February 23\, 2016\, 228-230: 8-10 am\, 2-4 pm\, Poster Hall: 4-6 pm \nPrimary Chair: Hélène Planquette\, LEMAR\, CNRS\, Plouzané\, France Chairs: Phoebe J Lam\, University of California Santa Cruz\, Department of Ocean Sciences\, Santa Cruz\, CA\, United States and Benjamin S. Twining\, Bigelow Lab for Ocean Sciences\, East Boothbay\, ME\, United States \nSession Description: \nA number of trace metals are thought to control marine ecosystem features and biological productivity. While trace elements in the dissolved phase have been the focus of many investigations\, we are still largely ignorant of the large scale distribution of particulate trace elements and their size partitioning and chemical composition. The GEOTRACES program\, which aims to provide a comprehensive view of the distribution of trace elements and their isotopes (TEIs) in the world’s oceans\, is providing new insights on these aspects. Furthermore\, there is a crucial need to understand the exchange mechanisms between particulate and dissolved pools\, including adsorption\, desorption\, aggregation\, precipitation\, biological uptake and remineralization processes. This session seeks to bring together scientists interested in better constraining the role of ocean particles in the biogeochemical cycles of TEIs\, in different oceanic environments\, such as the continental shelves and slopes\, the nepheloid layers\, or the particle-poor regions of the open ocean. We invite abstracts on all aspects of oceanic particulate TEIs\, through experimental\, in situ and modeling approaches. \nTrace Elements and Isotopes at the Interfaces of the Atlantic Ocean \nMonday\, February 22\, 2016\, 228-230: 10:30 am-12:30 pm\, Poster Hall: 4-6 pm \nPrimary Chair: Geraldine Sarthou\, LEMAR UMR 6539 CNRS UBO IRD IFREMER\, IUEM\, Plouzané\, FranceChairs: Edward A Boyle\, Massachusetts Institute of Technology\, Earth Atmospheric and Planetary Sciences\, Cambridge\, MA\, United States\, Gideon Mark Henderson\, University of Oxford\, Earth Sciences\, Oxford\, United Kingdom and Micha J.A. Rijkenberg\, Royal Netherlands Institute for Sea Research\, Den Burg\, Netherlands \nSession Description: \nTrace elements play a crucial role in the ocean. Some are toxic at high concentrations\, others serve as essential micronutrients in the many metabolic processes active in marine organisms. Some trace elements and their isotopes (TEIs) are diagnostic and allow the quantification of specific oceanic mechanisms. Studying the biogeochemical cycles of TEIs is thus necessary to deepen our understanding of carbon and nutrient cycling\, climate change\, ocean ecosystems and environmental contamination. The Atlantic Ocean is one of the primary CO2 sinks of the world ocean and one of the most biologically productive. Recently\, full-depth high resolution measurement campaigns\, especially in the framework of the international GEOTRACES program\, have revolutionized our understanding of the TEI cycling in the Atlantic Ocean. However\, processes occurring at the oceanic interfaces are very complex and need more attention. The aim of this session is to increase our understanding of the exchange of TEIs at the interfaces between the ocean and i) the atmosphere\, ii) the continents (e.g. by rivers and groundwater)\, iii) the marine sediments\, and iv) the ridges. We will particularly encourage contributions dealing with interdisciplinary studies\, with new insights gained by application of state-of-the-art analytical tools and modeling approaches. \nTrace Metal Bioavailability and Metal-Microorganism Interactions  \nThursday\, February 25\, 2016\, 228-230: 8-10 am\, Poster Hall: 4-6 pm \nPrimary Chair: Julia M Gauglitz\, Woods Hole Oceanographic Institution\, Marine Chemistry and Geochemistry\, Woods Hole\, MA\, United StatesChairs: Randelle Bundy\, Woods Hole Oceanographic Institution\, Marine Chemistry and Geochemistry\, Woods Hole\, MA\, United States and Jill N Sutton\, IUEM/UBO\, Technopôle Brest-Iroise\, Place Nicolas Copernic\, Plouzané\, France \nSession Description: \nThe distributions of trace elements in the marine environment are undeniably linked to biological processes. Low concentrations or low bioavailability of trace metals in the water column can lead to micronutrient limitation and stress\, while greater availability may increase biological demand and enhance the growth of microorganisms. Recent advances in high throughput biological techniques\, including “omics”\, as well as high-resolution geochemical data from the GEOTRACES program (www.geotraces.org) has lead to a wealth of new data. However\, meaningful interpretation of these data often still relies on process studies\, incubation-based experimental work\, or the culturing of representative or novel organisms. This session invites contributions on every scale of metal-microorganism interactions\, ranging from small-scale mechanistic work to large-scale biogeochemical cycle studies. We encourage abstracts that investigate trace metal acquisition strategies\, cellular metabolism\, chemical speciation and bioavailability\, and/or studies that link trace metal and biological water column data. Presentations that strive to better understand the biological control exerted on the distribution of trace elements in the marine environment are especially encouraged. \nTrace metal speciation in seawater: measurements\, modelling and impact on marine biogeochemistry \nWednesday\, February 24\, 2016\, 228-230: 8-10 am\, 2-4 pm\, Poster Hall: 4-6 pm \nPrimary Chair: David R Turner\, University of Gothenburg\, Gothenburg\, SwedenChairs: Stan MG van den Berg\, University of Liverpool\, Liverpool\, L69\, United Kingdom\, Sylvia Gertrud Sander\, University of Otago\, Dunedin\, New Zealand\, Kristen N Buck\, University of South Florida Tampa\, Tampa\, FL\, United States\, Rachel Shelley\, LEMAR/UBO\, Brest\, France\, Peter L Morton\, Florida State University\, Department of Earth\, Ocean\, and Atmospheric Science\, Tallahassee\, FL\, United States\, Christian Schlosser\, GEOMAR Helmholtz Centre for Ocean Research Kiel\, Chemical Oceanography\, Kiel\, Germany and Eric P. Achterberg\, GEOMAR Helmholtz Centre for Ocean Research Kiel. \nSession Description: \nGlobal change processes\, in particular ocean acidification\, are changing the chemistry of seawater. The carbon dioxide system and trace metal speciation are expected to be among the chemical components of seawater most strongly affected by global change processes. The distribution and identity of organic metal complexing ligands in the marine system\, and modelling of the chemical speciation using updated parameters\, play an important role in understanding the changes that take place and in projecting future changes. This session builds on two SCOR working groups : WG139 which is focused on organic metal-binding ligands; and WG145 which is focused on modelling metal speciation in seawater. One aspect of metal speciation that is receiving particular attention is the bioavailability of trace metals\, with extensive measurement programmes on the complexation of bioactive trace metals currently under way\, in particular within the GEOTRACES program. This work is producing exciting new field data that will benefit from improved speciation modelling and additional measurements. We invite contributions on the identification\, distribution and provenance of organic ligands in the marine environment\, the modelling of inorganic and organic metal speciation\, and linkages of trace metal speciation with ocean acidification and other factors of climate change. \nGEOTRACES-related sessions descriptions:  \nVariability in Southern Ocean Productivity over Different Timescales \nThursday\, February 25\, 2016\, Poster Hall: 4-6 pmFriday\, February 26\, 2016\, 215-216: 10:30 am-12:30 pm \nPrimary Chair: Alessandro Tagliabue\, University of Liverpool\, Liverpool\, United KingdomChairs: Philip Boyd\, IMAS\, ACE-CRC\, University of Tasmania\, Hobart\, Australia\, Eugene W Domack\, University of South Florida St. Petersburg\, St Petersburg\, FL\, United States and Amy Leventer\, Colgate University\, Geology\, Hamilton\, NY\, United States \nSession Description: \nSouthern Ocean productivity plays an important role in regulating marine resources\, ocean biogeochemistry and the global carbon cycle. Canonically\, variations in iron supply and demand are thought to regulate the variations in phytoplankton productivity. However\, via the actions of ocean physics\, the Southern Ocean also encounters substantial fluctuations across space and time in temperature\, sea ice and glacial ice dynamics and the availability of light and/or macro- and micro-nutrients. How these regulatory factors act individually and in combination to shape the dynamics of biological activity across food webs in different Southern Ocean regions and different timescales is not well understood. This hampers our ability to project with confidence how future environmental change will affect this important ecosystem. In particular we lack an understanding of how variations in the physical and/or biogeochemical environment are underpinned and connected to the broader picture of ecosystem structure\, as well as wider biogeochemical feedbacks. We invite presentations from field\, laboratory\, remote sensing\, modelling and paleo studies that seek to unravel the dynamics of the Southern Ocean marine ecosystem from a seasonal or decadal or millenial scale viewpoint. Efforts to combine insights across disciplines and scales from physics to biogeochemistry to ecosystems are actively encouraged. \n \nGEOTRACES Tutorial: \nT014: What Controls the Distribution of Dissolved Iron in the Ocean? \nTuesday\, February 23\, 2016\, 03:30 PM – 04:00 PMLocation: Ernest N. Morial Convention Center – RO3 \nPrimary Chair: Alessandro Tagliabue\, University of Liverpool\, Liverpool\, L69\, United Kingdom \nSession Description: \nDue to its role as a limiting nutrient in the Southern Ocean\, the role for iron in governing how ocean productivity influences wider biogeochemical cycling and atmospheric carbon dioxide levels is well accepted. Around twenty years ago the first compendium of dissolved iron observations was published\, enabling initial insights into the controls on its cycling and distribution. Today the number of compiled iron observations stands in the tens of thousands and is growing further thanks to the efforts of the GEOTRACES programme. In this tutorial I will review the new insights gained into the controls on the oceanic iron distribution that illuminates important roles for a range of sources and identifies crucial components of its biological cycling. These emerging ideas place important constraints on our efforts to represent the iron cycle in the global ocean models used for integrating to basin and global scales\, as well as climate prediction. In this context I will discuss how the role for iron in controlling past atmospheric carbon dioxide and future ocean productivity has matured. Finally\, I will highlight the key challenges that need to be tackled over the coming years\, with an emphasis on the opportunities provided by additional observational constraints. \n 
URL:https://www.geotraces.org/event/2016-ocean-sciences-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20151214
DTEND;VALUE=DATE:20151219
DTSTAMP:20260424T135128
CREATED:20140415T100844Z
LAST-MODIFIED:20140415T100844Z
UID:1899-1450051200-1450483199@www.geotraces.org
SUMMARY:American Geophysical Union Fall 2015 Meeting
DESCRIPTION:American Geophysical Union Fall 2015 MeetingDates: 14-18 December 2015Location:  San Francisco\, California\, USA \nFor further information: http://fallmeeting.agu.org/2015/ \nGEOTRACES related sessions: \nGC067: Trace Metal Cycling in the Environment – 40 Years of AdvancementsConvenors: (1) Priya Ganguli (2) Frank Black (3) Sergio Sanudo-Wilhelmy (4) Ed BoyleSession ID#: 8771Invited Speakers:Rob Mason\, University of ConnecticutPeter Swarzenski\, US Geological SurveyKristen Buck\, University of Southern Florida \nOur understanding of metal cycling in the modern environment has been revolutionized by improvements in sample handling (i.e.\, trace metal clean techniques) and by innovations in technology. These advancements have enabled researchers to accurately quantify trace metal concentrations in a range of media (water\, air\, sediment\, biota)\, and thereby evaluate system response to key environmental reforms\, such as the U.S. Clean Water Act of 1972 and the global effort to phase out leaded gasoline\, which began in 1973. It is timely to assess our understanding of trace metal cycling in the modern environment as we embark on new global efforts to protect human and ecosystem health\, such as the 2013 Minamata Convention on Mercury. We solicit presentations on trace metal cycling in a variety of systems\, including water\, atmosphere\, sediment\, and biota. We are particularly interested in research that evaluates trends and/or draws biogeochemical links among environmental spheres._______________________________________Note: Russ Flegal\, who was instrumental in promulgating trace metal clean techniques and advancing our understanding of metal cycling in the environment\, is retiring from UC Santa Cruz this academic year. This session will provide an opportunity to celebrate the breadth of his contributions to the field. \nA035: Dust in High Latitudes: From its Origins to its ImpactsPrimary Convener: Santiago Gasso\, GESTAR/NASA\, Silver Spring\, MD\, United StatesSession ID#: 8015Conveners: John Crusius\, USGS Western Regional Offices Seattle\, Seattle\, WA\, United States\, Gisela Winckler\, Lamont -Doherty Earth Observatory\, Palisades\, NY\, United States and Paul A Ginoux\, NOAA Princeton\, Princeton\, NJ\, United States \nFrom long records of dust in ice cores to present day satellite imagery of dust blown off the coasts of Alaska\, Iceland and the Patagonia desert\, observations show how dust in high latitudes is pervasive and sustained over hundreds of thousands of years. High latitudes amplify dust effects on climate through their interactions with ice clouds\, reduction of surface albedo\, and the transport/supply of micronutrients to the surface ocean\, triggering phytoplankton blooms and affecting biogeochemical cycles. Yet\, most research on dust has focused on the subtropical regions and the areas around the dust belt. In this session we would like to focus on dust research at high latitudes\, and we invite presentations addressing all aspects of emission\, transport and impacts of dust (or volcanic ash) \, from the geologic past and the present\, as well as model simulations of the future. \n  \nOS010: Exploring the Dust-Ocean Connection in a Changing ClimatePrimary Convener: Maurice Levasseur\, Laval University\, Quebec-Ocean\, Quebec City\, QC\, CanadaSession ID#: 8749Conveners: William L Miller\, University of Georgia\, Athens\, GA\, United States and Mitsuo Uematsu\, University of Tokyo\, Bunkyo-ku\, Japan \nOcean-atmosphere interactions take different forms. Every year\, the atmosphere delivers massive amounts of nutrients to the global Ocean\, often relieving nutrient limitations and thus altering primary production and various related chemical pathways and feedbacks to the atmosphere. These fertilization events\, which include desert dust and volcanic ash depositions\, are episodic and mostly unpredictable\, hence notoriously difficult to study. While considerable advances have been made during the last few years on the global distribution of these deposition events and on their impact on ocean biogeochemistry the question remains: Can we confidently extrapolate current understanding to a high CO2 world? In this session\, we seek contributions on all aspects of this fascinating connection between the continents\, the atmosphere and the ocean. Papers exploring the importance of global change (climate warming\, change in wind patterns\, ocean acidification\, ocean stratification\, etc.) on dust emission\, transport and impact on the ocean are particularly welcomed.
URL:https://www.geotraces.org/event/american-geophysical-union-fall-2015-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20150928
DTEND;VALUE=DATE:20151003
DTSTAMP:20260424T135128
CREATED:20150514T123628Z
LAST-MODIFIED:20150514T123628Z
UID:1956-1443398400-1443830399@www.geotraces.org
SUMMARY:22nd ISEB Symposium\, Dynamics of Biogeochemical Systems: Processes and Modeling
DESCRIPTION:22nd International Society for Environmental Biogeochemistry (ISEB) SymposiumDynamics of Biogeochemical Systems: Processes and ModelingDates: 28 September – 2 October 2015Location: Piran\, Slovenia. \nAbstract submission deadline: June 15\, 2015. \nFor futher information: www.iseb22.ijs.si \nGEOTRACES Special Session: \nMarine and coastal environments – Special session: GMOS and GEOTRACES
URL:https://www.geotraces.org/event/22nd-iseb-symposium-dynamics-of-biogeochemical-systems-processes-and-modeling/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20150816
DTEND;VALUE=DATE:20150822
DTSTAMP:20260424T135128
CREATED:20140909T134506Z
LAST-MODIFIED:20140909T134506Z
UID:1917-1439683200-1440201599@www.geotraces.org
SUMMARY:Goldschmidt 2015
DESCRIPTION:Goldschmidt 2015  Dates: 16-21 August 2015 Location: Prague\, Czech Republic \nFor further information: http://goldschmidt.info/2015/index \nGEOTRACES sessions: \n \nTheme 2: Ocean Geochemistry. Present Conditions and Past Variation: fluxes\, reservoirs and processes \n \nCo-ordinators:Geraldine Sarthou (Brest University\, France)Andrew Bowie (University of Tasmania) \n \nTeam members:Katherine Barbeau (Scripps\, USA)\, Kristen Buck (Univ South Florida\, USA)\, Zanna Chase (Institute for Marine and Antarctic Studies\, Austra)\, Rob Middag (Univ Otago\, New Zealand)\, James Moffett (Univ. Southern Carolina\, USA) \n \nOur understanding of the functioning of the Earth system requires a knowledge of the broad spectrum of processes that influence chemical composition\, cycling and transfer of elements in the oceans and their interactions with the atmosphere\, land and crust. Ocean geochemistry aims to link and integrate studies of the modern oceans with work using proxies to define how ocean chemistry and the coupled ocean-atmospheric system has changed through the past on a number of different timescales. Critical to these efforts are considerations of how ocean chemistry influences and responds to biological activity and the impact of anthropogenic activity on the marine environment\, with important outcomes to issues as diverse as climate change and the capacity of the oceans to remove toxic metals. This theme welcomes submissions in a wide range of marine research areas\, including contemporary ocean composition and speciation\, transport processes in the ocean\, air-sea gas exchange\, paleo-oceanography\, to the evolution of the ocean due to environmental forcings such as acidity\, temperature\, and oxygen. \nTheme 2 sessions descriptions (complete abstracts of all presentations are available at Goldschmidt site\, please click on the links below to access the Goldschmidt webpage for each session): \n02a: Trace Metals in the Ocean: Distributions\, Isotopic Variation and SpeciationSession Convenors: Katherine Barbeau (UC San Diego\, Scripps Institution of Oceanography\, USA)\, Andrew Bowie (University of Tasmania)\, Kristen Buck (University of South Florida\, College of Marine Science\, USA)\, Rob Middag (Univ Otago\, New Zealand)\, Christopher Pearce (National Oceanography Centre)\, Phil Pogge von Strandmann (Earth Sciences\, University College London\, UK)\, Géraldine Sarthou (LEMAR CNRS\, Brest\, France). \nAbstract: Many trace elements are critical for marine life. However\, the mechanisms controlling how these metals influence the functioning of ocean ecosystems remain elusive. In conjunction with changes in concentration and speciation\, variations in metal stable isotopes provide enhanced discriminatory power for constraining these biogeochemical cycles\, as each process imparts a unique isotopic signature to the water column. The GEOTRACES program\, which aims to map the world’s oceans for trace elements and isotopes with unprecedented resolution\, combined with a growing inventory of metal isotope systems\, has facilitated rapid progress in this area. This session seeks to bring together scientists from recent oceanographic cruises to integrate results within and between ocean basins\, providing new insights on the behaviour of trace metals in the global ocean. We invite abstracts on all aspects of oceanic trace metal distributions and speciation\, as well as their isotopes (both radiogenic and stable)\, including their application to reconstructing past marine processes such as ocean circulation\, redox conditions and hydrothermal activity. We also encourage inter-calibration studies\, development of new analytical techniques and modelling work. \nKeynote speaker: Gideon Henderson (University of Oxford\, UK)Invited speakers: François Lacan (LEGOS CNRS\, Toulouse\, France) \n02b: Radionuclides in the OceanSession Convenors: Bob Anderson (Lamont-Doherty Earth Observatory\, USA)\, Ken Buesseler (Woods Hole Oceanographic Institution\, USA)\, Pere Masque (Universitat Autònoma de Barcelona) \nAbstract: Natural uranium/thorium series\, cosmogenic and anthropogenic radionuclides\, with their in-built “clocks” and contrasting geochemical properties and biological affinities\, have been instrumental for understanding and quantifying many important questions in oceanographic research. Examples include circulation and mixing of water masses\, particle cycling\, sediment and coral dating\, and fluxes at ocean boundaries\, amongst many other processes.  The Fukushima Dai-ichi disaster has also recently heightened public and policy concerns related to the human health effects of radioactivity attributable to external exposure from ocean contact and internal exposure from seafood consumption. Yet knowledge gaps remain regarding the spatial and depth distributions and the temporal evolution of many radionuclides of importance to both oceanographic and human health issues. This session will bring together scientists that are using radionuclides to better understand processes in the oceans through field based studies\, such as GEOTRACES\, laboratory experiments\, and modeling approaches.  This session will also accept presentations on advances in our methods for sampling and the analysis of ocean radionuclides.  More broadly\, the session will consider presentations on new tools to enhance public understanding of radioactivity\, and the education and training of the next generation of marine radiochemists. \nInvited speakers: Valentí Rodellas (Institut de Ciència i Tecnologia Ambientals\, Universitat Autònoma de Barcelona\, Spain)\, John Smith (Bedford Institute of Oceanography\, Canada)\, Walter Geibert (Alfred Wegener Institute\, Germany) \n \n02c: Past Changes in Ocean Biogeochemistry and Circulation and their Interaction with ClimateSession Convenors: Zanna Chase (Institute for Marine and Antarctic Studies\, Australia)\, Martin Frank (GEOMAR Helmholtz centre for ocean research Kiel\, Germany)\, Norbert Frank (University of Heidelberg\, Germany)\, Katharina Pahnke (ICBM and MPI for Marine Microbiology\, Germany)\, Laetitia Pichevin (University of Edinburgh\, UK)\, Laura Robinson (University of Bristol\, UK)\, Tina van de Flierdt (Imperial College London\, UK)\, Kazuyo Tachikawa (Cerege\, CNRS\, France) \nAbstract: Ocean biogeochemistry and circulation have influenced or even controlled climate on different time scales. Given that historical observations of ocean properties are restricted to the last ~100 years\, it is essential to reconstruct their involvement in Earth’s climate prior to human induced changes.Trace-element and isotope geochemistry offer powerful tools to constrain such changes. For this session we invite contributions addressing past ocean circulation\, productivity and nutrient cycling based on stable\, radiogenic\, or radioactive isotope signatures or other geochemical tracers from millennial to million year time-scales from the recent past to deep time\, from bulk sediment to deep-sea corals. We also encourage contributions that integrate proxy data and models to understand the dynamics of past ocean circulation. \nKeynote speaker: Jess Adkins (California Institute of Technology\, USA)Invited speaker: Ruza Ivanovic (University of Leeds\, UK) \n02d: What are the unifying principles common to all three Oxygen Minimum Zones (OMZs)?Session Convenors: Jim Moffett (Univ. Southern Carolina\, USA)\, Aurélien Paulmier (LEGOS\, France) \nAbstract: Oxygen minimum zones (OMZs) arise from a combination of high productivity on overlying waters and sluggish rates of ventilation within their core\, giving rise to strong oxygen deficits.  In three OMZs (the Arabian Sea\, Eastern Tropical South Pacific\, and Eastern Tropical North Pacific) oxygen is probably effectively zero\, based on recent sensor data.   These are important areas for fixed nitrogen loss on a global scale. Other OMZs\, including the Benguela Upwelling and Bay of Bengal\, are poised to become denitrifying on a large scale but are not so at present. These regions have complex geochemistry and a global significance that extends beyond the nitrogen cycle alone. They are critical domains in which to investigate global change\, with shifts in redox chemistry and their boundaries evident or predicted to occur in the near future. Moreover\, carbon preservation in underlying sediments makes them excellent regimes to study past changes in ocean processes. The purpose of this session is to explore the biogeochemical features common to all OMZs as well as the features that make them different.Many nations have mounted expeditions to study OMZs in recent years\, including several European nations\, Japan\, the USA and states bordering OMZs\, particularly Peru\, Chile and India. Three cruises in the International GEOTRACES program have been staged in denitrifying OMZ regions since 2009\, by Japan\, the USA and India. Researchers from these and other programs\, as well as benthic studies are encouraged to participate in this session. \nKeynote speaker: Bess Ward (Princeton University\, USA)Invited speakers:  Niels Peter Revbesch (University of Aahrus\, Denmark)\, Marcel Kuypers (MPI for Marine Microbiology\, Germany)\, Phyllis Lam (NOCS\, UK)\, Sunil Singh (Physical Research Laboratory\, India) \n02e: Air-Sea Exchange\, the Biological Pump\, and Ocean AcidificationSession Convenors: Steve Emerson (University of Washington\, USA)\, Doug Wallace (Dalhousie University\, Canada) \nAbstract: The pCO2 content of the atmosphere is regulated by exchange with the upper ocean via the solubility and biological pumps.  About one quarter of the anthropogenic CO2 introduced to the atmosphere is ultimately stored in the ocean causing a decrease in pH.  Understanding the physical\, biological and chemical processes controlling the atmosphere-ocean carbon cycle are key to accurate predictions of ocean feedbacks to global warming. While there have been great advances on the relationship between air-sea exchange and wind speed\, mechanisms controlling the fluxes are still uncertain.  Satellite-based estimates of the biological pump predict geographic variations that are not observed in upper-ocean\, mass-balance studies.  The response of ocean pH to the anthropogenic CO2 invasion is nearly certain\, but generalizations about the effects on marine biology are still tenuous.  This session explores recent advances in marine carbon cycle studies in the upper ocean and atmosphere. \nInvited speakers: Henry Bittig (Helmholtz Ctr for Ocean Research\, Kiel\, Germany) and Jan Kaiser (University of East Anglia\, U.K.) \n02f: Biogeochemistry of Arctic and Antarctic sea ice systemsSession Convenors: Jun Nishioka (Univ. Hokkaido\, Japan)\, Delphine Lannuzel (University of Tasmania\, Australia) \nAbstract: Observations have demonstrated that sea ice is biologically and chemically active in the global biogeochemical cycles. However\, Earth system models currently represent sea ice as biologically and chemically inert. The aim of this session is to bring together those working on all aspects of sea ice biogeochemistry to gain a better understanding of the exchanges at the interface between sea ice and the atmosphere and sea ice and the ocean. We particularly encourage presentations on processes involved in the distribution of macro-nutrients\, trace metals and organic carbon\, as well as the uptake and production of climatically-important gases such as CO2\, CH4\, and DMS. \nKeynote speaker: Martin Vancoppenolle (LOCEAN CNRS\, Paris\, France) \n02g: Advances in marine N\, P and Si biogeochemistrySession Convenors: Damien Cardinal (University Pierre and Marie Curie\, LOCEAN\, Paris)\, Albert Colman (University of Chicago\, USA)\, Masha Prokopenko (University of Southern California\, USA)\, Christian März (Newcastle University\, UK) \nAbstract: Nitrogen\, phosphorus and silicon are critical nutrients that help govern net primary production in the oceans and the efficiency of carbon export from the euphotic zone. Though their cycles are coupled\, each element has a very distinct cycle with regard to ocean sources and sinks\, modes of internal recycling and residence times. The biological requirements\, remineralization pathways\, and chemical characteristics (redox state\, solubility\, coupling with carbon) diverge in many important ways\, leading to formation of biogeochemically diverse oceanic regions. In the recent years numerous methodological advances have been developed and several basic concepts revisited with regard to these key macronutrients (e.g. diazotrophy\, Redfield Ratios…). This session will focus on the new insights gained by application of such analytical and modeling approaches. We will particularly encourage contributions dealing with inter-elemental (de)coupling\, multi-spatial scales (from cell to global)\, and/or multi-temporal scales (from geologic past to future). \nKeynote speaker: Laetitia Pichevin (University of Edinburgh\, UK)Invited speakers: Greg de Souza (Princeton University\, USA)\, Kate Hendry (Bristol University\, UK)\, Caroline Slomp (University of Utrecht\, The Netherlands)\, Claire Mahaffey (University of Liverpool\, UK)\, Curtis Deutsch/Tom Weber (University of Washington) \n02s: Goldschmidt 25th Anniversary \nCatherine Jeandel\, GEOTRACES IPO senior scientist\, reviewed the last 25 years of marine geochemistry. Her talk is available to download here.
URL:https://www.geotraces.org/event/goldschmidt-2015/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20150626
DTEND;VALUE=DATE:20150701
DTSTAMP:20260424T135128
CREATED:20150123T132130Z
LAST-MODIFIED:20150123T132130Z
UID:1939-1435276800-1435708799@www.geotraces.org
SUMMARY:IUGG General Assembly 2015 - IAPSO Symposium
DESCRIPTION:IUGG General Assembly 2015 – IAPSO SymposiumDates: 26-30 June 2015Location: Prague\, Czeck Republic \nFor further information: http://www.iugg2015prague.com/iapso-symposia.htm \nAbstract submission deadline: 31 January 2015 \nGEOTRACES-relevant sessions: \nP12. IIOE to IIOE-2 – Five Decades of Indian Ocean Oceanography: Challenges in Physics and Biogeochemistry of the Indian OceanConveners:  Satheesh Shenoi (Hyderabad\, India)\, Mike McPhaden (Seattle\, USA)\, Yukio Masumoto (Tokyo\, Japan) and Raleigh Hood (Cambridge\, USA). \nThe first coordinated investigation of the Indian Ocean was carried out during the International Indian Ocean Expedition (IIOE) in 1962–65. It consisted of a basin-wide survey that subsequently resulted in a comprehensive hydrographic atlas and number of regional studies\, including the first survey of the seasonally reversing Somali Current. IIOE was planned and executed by the Scientific Committee on Ocean Research (SCOR) and the Intergovernmental Oceanographic Commission (IOC) with the involvement of 20 countries. Forty-six research vessels belonging to 14 countries participated in the basin wide hydrographic surveys. It was an unprecedented interdisciplinary endeavor embracing physical oceanography\, chemical oceanography\, marine biology\, meteorology and marine geology and geophysics. \nIn the 50 years since the IIOE\, many subsequent programs have lead to improvements in our ability to observe the ocean and atmosphere through the deployments of oceanographic and meteorological sensors on Earth-observing satellites and through deployment of in situ instruments like autonomous profiling floats\, moored buoys\, tsunami detection networks\, sea level gauges\, etc. All of them have dramatically improved the characterization of both physical and biological oceanographic variability and the atmospheric forcing of that variability. Together with the improvements in observing\, ocean modeling in all its facets from short-term forecasting to seasonal prediction to climate projections also has improved dramatically. Based on these improvements\, science foci have also been changed from understanding of climatological states to their variability. Hence\, compared to the IIOE era\, which relied almost exclusively on ship-based observations\, new measurement technologies in combination with targeted and well-coordinated field programs provide the capacity for a much more integrated picture of the Indian Ocean variability. This symposium\, on the eve of the 50th Anniversary of the IIOE\, will review the current state of our knowledge about the physics and biogeochemistry of the Indian Ocean and highlight the scientific challenges to be addressed during a second multi-disciplinary\, multi-national Indian Ocean Expedition (IIOE-2) to be carried out over 2015-2020.
URL:https://www.geotraces.org/event/iugg-general-assembly-2015-iapso-symposium/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20150614
DTEND;VALUE=DATE:20150620
DTSTAMP:20260424T135128
CREATED:20150129T152055Z
LAST-MODIFIED:20150129T152055Z
UID:1940-1434240000-1434758399@www.geotraces.org
SUMMARY:12th International Conference on Mercury as a Global Pollutant
DESCRIPTION:12th International Conference on Mercury as a Global Pollutant Dates: 14 – 19 June 2015Location: Jeju\, Korea \nFor further information: http://mercury2015.com \nGEOTRACES-related Session: \n17. Integrating marine observational studies and model developmentConveners: Anne Laerke Soerensen & Lars-Eric Heimbürger \nOn a global scale the primary mercury exposure pathway for humans is via the consumption of marine fish that bioaccumulates methylmercury. The marine production of methylmercury is thought to be related to the bacterial degradation of organic matter and inorganic mercury availability. Anthropogenic mercury emissions have increased the oceanic mercury reservoir\, and thereby lead to increased methylmercury production and human exposure. Models simulating mercury biogeochemistry and transport in the oceans have been developed\, yet few oceanic observations have so far been available to evaluate model performance. Moreover\, marine mercury observations in most oceans have shown large decreases over the past decades. This may be related to decreased anthropogenic mercury inputs to the oceans or to better analytical performances. In this session we would like to confront recent model results with the latest field observations as well as define knowledge gaps and future research needs for combined observation – model assessments. We invite talks concerning mercury cycling and speciation in the oceans\, ideally\, but not limited to model approaches and field data. \n Conference Workshops: \nGEOTRACES Intercalibration exercises for Hg species in seawater discussion forumConveners: Lars-Eric Heimbürger \nMercury is one of the least concentrated elements in the oceans. We need to be able to measure\, understand and interpret variability in mercury concentrations in the ocean\, which is often as low as some 10 percent. We organized international intcalibration exercises for total mercury and total methylmercury determination in sea water collected during the 2013 Dutch GEOTRACES MedBlack cruise (GA04- Black Sea) and the 2014 French GEOTRACES GEOVIDE (GA01- North Atlantic Ocean). Both exercises were intended to primarily evaluate the analytical performance of each participating laboratory. Therefore each laboratory received a single sample bottle of similar size\, that has undergone the same cleaning procedure prior to sampling\, and each sample was preserved in the same manner. The 2013 exercise was intended as a broader screening with a maximum number (25) of participating laboratories. Results indicated substantial disagreement between the participating laboratories\, for both total mercury and methylmercury determinations. For the 2014 exercise we could only invite 10 laboratories. Intercomparability of the second exercise was considerably better\, but needs to be further improved in the years to come. For this workshop we invite the participants of the of those and previous GEOTRACES intercalibration exercises as well as scientists interested in marine mercury and low level measurements. Together\, we will examine the results of both intercalibration exercises in detail\, attempt to explain causes for disagreements\, and develop ideas for future developments to achieve traceable mercury measurements in the oceans.
URL:https://www.geotraces.org/event/12th-international-conference-on-mercury-as-a-global-pollutant/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20150323
DTEND;VALUE=DATE:20150328
DTSTAMP:20260424T135128
CREATED:20140410T125109Z
LAST-MODIFIED:20140410T125109Z
UID:1896-1427068800-1427500799@www.geotraces.org
SUMMARY:3rd International Symposium on "Effects of Climate Change on the World's Oceans"
DESCRIPTION:3rd International Symposium on the Effects of Climate Change on the World’s OceansDates: 23-27 March 2015Location: Santos\, Brazil \n \nFor further information: http://www.pices.int/meetings/international_symposia/2015/2015-Climate-Change/scope.aspx \n \nGEOTRACES-related session: \n \nS3. Changing Ocean Chemistry: From Trace Elements and Isotopes to Radiochemistry and Organic Chemicals of Environmental ConcernCo-chairs: Angelica Peña (Institute of Ocean Sciences\, Department of Fisheries and Oceans\, Canada) and Geraldine Sarthou (LEMAR\, IUEM\, Brest\, France) \n \nPlenary Speaker:Micha Rijkenberg (Royal Netherlands Institute for Sea Research\, The Netherlands) \n \nInvited Speaker:Maeve Lohan (School of Geography\, Earth and Environmental Sciences\, University of Plymouth\, UK) \n \nOcean chemistry has changed during the Anthropocene. International efforts such as GEOTRACES have improved scientific understanding of the marine biogeochemical cycles and distributions of trace element\, isotopes and organic chemicals in the marine environment\, and their synergistic relationships with anthropogenic drivers and climate change. This session invites presentations on assessments and understanding of changes in ocean chemistry including trace elements\, isotopes\, radiochemistry and organic chemicals of environmental concern. Areas of focus include (1) historical and future trends in ocean chemistry and synergistic relationships with marine biogeochemistry and ecosystems; (2) scientific outcomes of recent work on the marine biogeochemical cycles of trace elements\, isotopes\, radiochemistry and organic chemicals\, and measurements of change in ocean chemistry (e.g.\, iron\, mercury\, lead\, organic chemicals\, petroleum\, and plastics); and (3) future challenges facing the study of changes in ocean chemistry associated with anthropogenic drivers and climate change.
URL:https://www.geotraces.org/event/3rd-international-symposium-on-effects-of-climate-change-on-the-worlds-oceans/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20150222
DTEND;VALUE=DATE:20150228
DTSTAMP:20260424T135128
CREATED:20140625T085759Z
LAST-MODIFIED:20140625T085759Z
UID:1912-1424563200-1425081599@www.geotraces.org
SUMMARY:ASLO 2015\, Aquatic Sciences Meeting
DESCRIPTION:ASLO 2015\, Aquatic Sciences MeetingDates: 22-27 February 2015Location: Granada\, Spain \nFor further information: http://www.aslo.org/meetings/index.html \nGEOTRACES sessions: \n142 – Chemical Oceanography/GEOTRACESOrganizer: Andrea Kochinsky\, Jacobs University Bremen. \n \n037 – The Molecular Ecology of Metal-Microbe Interactions in the Ocean EnvironmentOrganizers: Robert Strzepek\, The Australian National University; Maite Maldonado\, The University of British Columbia; and Yeala Shaked\, The Hebrew University in Jerusalem. \nTrace metals are essential for life\, catalysing key cellular reactions such as photosynthesis and nutrient assimilation at the molecular level. The interactions between trace metals and ocean biota are reciprocal: not only do the metals control the productivity and distribution of microbes\, but also these organisms regulate the distributions\, chemical speciation\, and the biogeochemical cycling of these metals. With the advent of new high-resolution geochemical data from the international GEOTRACES program (www.geotraces.org)\, it is timely to consider recent advances in our understanding of the diversity of ways that the ocean biota acquire\, use\, and cycle trace elements in the ocean. There has been an explosive expansion of techniques in analytical chemistry\, molecular biology\, physiology and “omics” that has the potential to develop a mechanistic understanding of trace metal acquisition\, cellular function\, and the interactive effects of metals with changing environmental factors\, such as light\, temperature and pH. This session invites contributions that consider trace metal-biota interactions from a variety of perspectives. Presentations that strive to develop a mechanistic understanding of key cellular processes involving metals are encouraged. \n \nGEOTRACES-relevant sessions: \n \n014 – Atmospheric Deposition Effects in Aquatic Ecosystems Organizers: Francesc Peters\, Institut de Ciéncies del Mar (CSIC)\, Barak Herut\, National Institute of Oceanography\, Adina Paytan\, Institute of Marine Sciences\, Cecile Guieu\, Laboratoire d’oceanographie de Villefranche\, Ana M Aguilar-Islas\, University of Alaska Fairbanks\, Clifton Buck\, Skidaway Institute of Oceanography and Simon Usher\, University of Plymouth. \nAtmospheric aerosols including mineral dust\, anthropogenic particles\, gases and particles from volcanic eruptions\, and biogenic materials are continuously deposited into water bodies throughout the world. The deposition of aerosols into aquatic systems contributes many dissolved and particulate constituents including inorganic nutrients\, organic matter\, trace metals\, toxins\, pollen\, spores\, bacteria and viruses. These inputs change the chemistry and impact the ecosystems of receiving waters\, including the dynamics of phytoplankton and bacteria. The impacts vary considerably depending on the sources\, composition and bioavailability of the aerosols\, the chemical\, biological and ecological characteristics of the receiving water body and the timing of deposition. We welcome contributions studying the effects of aerosols of diverse origin in aquatic systems\, especially in relation to ecosystem dynamics and functioning and the interplay with global changes. Approaches may include experimentation\, observations\, and theoretical and modeling efforts with timeframes comprising from ecological to geological scales.
URL:https://www.geotraces.org/event/aslo-2015-aquatic-sciences-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20141215
DTEND;VALUE=DATE:20141220
DTSTAMP:20260424T135128
CREATED:20140415T092054Z
LAST-MODIFIED:20140415T092054Z
UID:1898-1418601600-1419033599@www.geotraces.org
SUMMARY:American Geophysical Union Fall 2014 Meeting
DESCRIPTION:American Geophysical Union Fall 2014 MeetingDates: 15-19 December 2014Location:  San Francisco\, California\, USA \n \nAbstract deadline: 6 August 2014 \n \nFor more information: http://fallmeeting.agu.org/2014/ \nGEOTRACES sessions: \n \nTrace Element and Isotope Cycling in the Coastal Environment – 40 Years of InnovationsConveners: Greg Cutter and Pete Sedwick \n \nIt could be argued that the first comprehensive treatise on chemical oceanography in coastal environments – estuaries\, salt marshes\, and shelf waters – was found in the 1975 book “Marine Chemistry in the Coastal Environment.” In the almost 40 years since this publication\, tremendous developments in sampling and analytical methods\, treating the coastal zone as a coupled atmosphere\, water column\, and sediment system\, and advanced modeling and simulation approaches have radically changed how we view these environments. Now that global investigations like GEOTRACES of trace elements and isotopes are including ocean margins\, it is timely to discuss the most recent insights into the biogeochemical functioning of the coastal zone. We are soliciting presentations on the cycling of trace elements and isotopes between the atmosphere (aerosols/dry and wet deposition; gas exchange)\, water column\, and sediments of the diverse coastal regime. \n \n-> In point of fact\, this session will be in honor of Dr. Tom Church (who edited the Marine Chemistry in the Coastal Environment book) upon his retirement from the University of Delaware. We will be having a retirement party for Tom the evening of the session as well\, so I encourage you to submit an abstract on any aspect of your work that has\, whether planned or not\, relevance to the broad spectrum of coastal zone research Tom has touched – trace elements\, radionuclides\, atmospheric deposition\, sediments\, water column\, etc. Then come to the party\, which as many of you know from the Hawaii Ocean Sciences Meeting\, I’m good at hosting! \n \nTrace metals and isotopes in the Eastern Tropical South Pacific: Results of the 2013 US GEOTRACES Zonal Transect and complimentary studies  Conveners: Jim Moffett\, Chris German and Martin Frank \n \nThe second US GEOTRACES sectional cruise was staged in 2013: a zonal transect from the Peruvian Coast to the central South Pacific. It included (1) the Peruvian Oxygen Minimum Zone (OMZ)\, (2) a vast oligotrophic region of the upper water column\, and (3) an extensive hydrothermal plume originating from the East Pacific Rise.  Approximately 25 research groups were involved in the cruise\, with samples collected for all key GEOTRACES parameters plus additional redox-sensitive tracers. The objectives were to understand the cycling of trace elements and isotopes in the highly diverse\, overlapping regimes surveyed within the transect.  Submissions are invited from participants in the US GEOTRACES program\, from other programs in the region (e.g. the German SFB754) with complimentary objectives – including related process studies – and from workers who have become involved in any aspects of data synthesis and modelling after the cruise was completed. \n \nGEOTRACES-related sessions: \n \nProductivity Proxies: New Developments and Records  Conveners: Fatima Abrantes\, Bob Anderson and Heather Stoll \nThe role of the ocean in the global carbon cycle is greatly mediated by microorganisms through primary productivity and C export\, the so-called biological pump. Understanding the sensitivity of the process and quantifying C export variability associated with past climatic conditions is fundamental to forecast how primary productivity may respond to the changing conditions generated by a CO2 increase in the atmosphere. To help reconstruct the response of the biological pump to past perturbations in forcing we need reliable\, varied and independent proxies for: the oceanic physical state\, nutrient availability and utilization\, primary production and export\, and\, burial conditions. Many have been proposed through the years; however\, problems with their utilization have also been identified. The plan for this session is to attain an overview of the recent progress in the creation of primary productivity related proxies\, as well as recently generated past records. \n \n-> Many of the trace elements and isotopes studied by GEOTRACES have been exploited as proxies of past changes in ocean biological productivity\, nutrient utilization and water chemistry. We encourage presentations on the development\, testing and application of these proxies. \n \nBiogeochemical cycling of silicon in coastal transition zonesConveners: Claudia Ehlert\, Patricia Grasse\, Daniel J Conley and Mark A Brzezinski \n \nThis session focuses on the bio(geo)chemical cycling of silicon between sources\, sinks and within the dynamic transition zones\, associated with the transformation of Si during transport from the freshwater to the marine environment. There are large variations in Si cycling in rivers and in estuaries\, in the contributions of groundwater and pore water discharge to Si cycling in coastal regions\, and within coastal zones themselves that result in large uncertainties in the global budget of silicon and in whether the silicon cycle in the ocean is in steady state. While this session emphasizes on the silicon cycle\, other data (e.g. trace elements like cadmium\, zinc\, iron\, aluminum\, etc) that elucidate the main processes and interactions between macro- and micro- nutrients within transition zones are also welcome. We explicitly solicit contributions from both isotope analyses as well as concentration studies with a focus on field study results. \nThe Biogeochemical Cycling of Mercury in the Coastal and Open OceanConveners: Robert P Mason and Arthur Russell Flegal \n \nThe ocean plays an important role in the global mercury cycle being the long-term sink for mercury emitted to the atmosphere\, and air-sea exchange influences its residence time in the biosphere. Ocean fish are the major route for human exposure to methylmercury\, an important health concern. Many processes are involved in the transformation of inorganic mercury to methylmercury asnd there is still uncertainty concerning the primary locations of its net methylation and bioaccumulation. The focus of this session is therefore presentations concerning mercury inputs into the marine environment\, and the factors influencing the transformation (methylation\, demethylation\, oxidation and reduction)\, both biotic and abiotic\, and fate in coastal and offshore waters\, and methylmercury bioaccumulation into the marine food chain. Papers describing new laboratory studies\, field investigations and/or modeling in coastal and offshore environments are welcome\, as are papers using stable isotope signatures or other innovative approaches\, or exploring global change implications. \n \nPast Ocean DynamicsConveners: Joerg Albert Lippold\, Luke Skinner and Sam Jaccard \n \nThe oceans have played a major role in amplifying past climate variability and causing shifts between regional\, and perhaps global\, climate states. In particular the meridional overturning circulations play an instrumental role in climate variability on a range of time scales\, by storing and redistributing heat\, fresh water\, carbon and nutrients.Trace-element and isotope geochemistry (including radiocarbon) are powerful tools to constrain past changes in the distribution of water masses as well as the dynamics of past ocean circulation However\, consensus on the occurrence\, intensity and precise timing of past variations in the large-scale overturning circulation rate\, for example during past abrupt or glacial-interglacial climate change\, remains lacking. For this session we invite contributions addressing past ocean circulation change on millennial to glacial/interglacial timescales. We particularly encourage contributions involving inter-proxy comparisons and/or that integrate proxy data and models toward a quantitative understanding of past ocean circulation dynamics. \n 
URL:https://www.geotraces.org/event/american-geophysical-union-fall-2014-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20141027
DTEND;VALUE=DATE:20141101
DTSTAMP:20260424T135128
CREATED:20140512T081228Z
LAST-MODIFIED:20140512T081228Z
UID:1902-1414368000-1414799999@www.geotraces.org
SUMMARY:24th Earth Sciences meeting
DESCRIPTION:24th Earth Sciences meetingDates: 27-31 October 2014Location: Pau\, France \nFor futher information: http://rst2014-pau.sciencesconf.org \nGEOTRACES related sessions: \nSession 8.7 Biogeochemical cycling of contaminants in the ArcticOrganizers: Lars-Eric Heimburger (GET\, Toulouse\, France) and Aurélien Dommergue (LGGE\, Grenoble\, France) \nAbstract: In the past fifteen years\, a new instrumentation has opened the door to the analysis of stable isotopes of light elements such as non-traditional Li\, Mg or Ca\, but also and mainly transition elements such as Fe\, Cu\, Zn or other heavier elements. Biogeochemical processes are responsible for some of the most important isotopic composition variations among those identified so far for these elements. The ability to unravel processes controlling the mobility\, bioavailability and biogeochemical cycling of essential and potentially toxic elements in the terrestrial environment has become a hot scientific topic. This session is an opportunity to make an updated inventory on the use of the isotopic composition of these elements and to show the latest developments\, especially in the biogeochemical field. \n  \nSession 8.5: Advances in mercury biogeochemistryOrganizers: Jeroen Sonke (GET\, Toulouse) and David Amouroux (LCABIE\, IPREM\, Pau) \n \nAbstract: Half a century of mercury research has provided scientists and policy makers with detailed understanding of mercury toxicology\, biogeochemical cycling and past and future impacts on human exposure. The complexity of the global biogeochemical mercury cycle has led to repeated and ongoing paradigm shifts in numerous mercury related disciplines and outstanding questions remain. In this session we invite contributions that target those outstanding questions on the biogeochemical cycling of mercury. \n 
URL:https://www.geotraces.org/event/24th-earth-sciences-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20140728
DTEND;VALUE=DATE:20140802
DTSTAMP:20260424T135128
CREATED:20140109T101750Z
LAST-MODIFIED:20140109T101750Z
UID:1891-1406505600-1406937599@www.geotraces.org
SUMMARY:AOGS 2014\, Asia Oceania Geosciences Society Annual Meeting
DESCRIPTION:Asia Oceania Geosciences Society 11th Annual Meeting (AOGS 2014)Dates: 28 July to 01 August\, 2014Location: Sapporo\, Hokkaido (Japan)Abstract deadline: 11 February 2014 \n \nFor further information: http://www.asiaoceania.org/aogs2014/public.asp?page=home.htm \nGEOTRACES sessions: \n \n*OS01: Trace elements and their isotopes in the ocean: GEOTRACES activities in Asia and Oceania \nMain Convener: Dr. Yoshiki Sohrin (Kyoto University\, Japan) \nCo-convener(s): Dr. Tung-Yuan Ho (Academia Sinica\, Taiwan)\, Dr. Pinghe Cai (Xiamen University\, China)\, Prof. Man Sik Choi (Chungnam National University\, Korea\, South). \n \nOceanic trace elements and their isotopes (TEIs) are promising tracers and proxies for important geochemical and biogeochemical processes in the modern and ancient oceans. The global distributions of TEIs have been extensively studied during the past decade\, mostly attributed to the sponsorship and support of an active international program\, GEOTRACES. Some of the TEIs data obtained at crossover stations by different research groups globally have already been intercalibrated and validated by GEOTRACES committee and the validated data will be reported in the Intermediate Data Product in early 2014. The contributions of Asian and Oceania countries to GEOTRACES related studies would be essential for the success of GEOTRACES programme. This session aims to bring together GEOTRACES related studies in Asia and Oceania to enhance and promote the related research in the region. Contributions from other regions are also welcome.
URL:https://www.geotraces.org/event/aogs-2014-asia-oceania-geosciences-society-annual-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20140608
DTEND;VALUE=DATE:20140614
DTSTAMP:20260424T135128
CREATED:20130731T093642Z
LAST-MODIFIED:20130731T093642Z
UID:1874-1402185600-1402703999@www.geotraces.org
SUMMARY:Goldschmidt 2014
DESCRIPTION:Goldschmidt 2014  Dates: 8-13 June 2014Location: Sacramento\, California\, USA \nFor further information: http://goldschmidt.info/2014/index \nGEOTRACES Town Hall: \n \nGEOTRACES Intermediate Data Product  (Included in the student events programme)Tuesday 10th June 12:30-14:00  Location: Restaurant\, Cafeteria 15L (View on map) – Capacity 100 persons. \n \nThe first GEOTRACES intermediate data product is now freely available on-line. The nature of the data made available\, the data policy\, and the procedure to access the data will be described. GEOTRACES (www.geotraces.org) is an international study of the marine biogeochemical cycles of trace elements and their isotopes. 654 stations (50 cruises) have been sampled resulting in 800 data sets. A question and answer session will follow a presentation of selected results and new data visualization tools. \nLunch boxes will be provided to the first 50 student participants and USB sticks containing the eGEOTRACES Atlas will be offered to the first 80 participants. \n  \nGEOTRACES sessions: \n \n17e: Trace Elements\, Microbes\, and Biogeochemical Cycles in the Ocean EnvironmentCo-convenors: Kathy Barbeau\, Maite Maldonado\, Benjamin Twining \n \nThe relationships between trace metals and biota in the oceans are interactive\, wide-ranging and can be perceived at molecular to ecosystem scales\, with multiple connections to and consequences for the biogeochemical cycling of carbon and nitrogen. Developments in this field are being led by advances in analytical chemistry\, nanotechnology\, molecular biology\, and bioinformatics as well as the expansion of ‘omics’-related observations of in-situ microbial communities and the advent of expansive new high resolution geochemical data sets via the international GEOTRACES program (www.geotraces.org). This session invites contributions which highlight trace metal-biota interactions and trace metal biogeochemistry in the oceans from a variety of perspectives. Presentations that include observations from ocean transects\, process studies\, laboratory or field-based incubation experiments and integration into models are encouraged. \n \n16g: Sources\, sinks and stores: integrating isotope and geochemical proxies for past and present surface processes\, from elementary reactions to global changeCo-convenors: Tim Conway\, Penelope Lancaster\, Damien Lemarchand\, Sunil Singh\, Sambuddha Misra \n \nInteractions between water and rock control the chemistry of surface waters as well as the sedimentary and oceanic geochemical budget over a range of time scales\, with global implications for pressing environmental and energy questions. Recent improvements in high resolution analytical tools\, especially geochemical and isotopic techniques by multi-collector ICP-MS\, have advanced our understanding of these critical processes in disciplines as diverse as the ultra-low concentration constituents of seawater\, the provenance of sediments and the mechanisms of chemical and physical weathering. This session invites state-of-the-art contributions which address critical uncertainties in our ability to interpret the recent abundance of geochemical data in three key areas: 1) Production and transport of sediments\, including new isotopic and geochemical proxies for weathering rates (non-traditional stable isotopes like Li\, Be\, B\, Mg\, Ca\, Si\, Fe\, Mo\, U- and Th-series\, isotopologues etc.); 2) isotopic and elemental fluxes to\, from and within the ocean\, and their influence on the composition of marine sediments and seawater dissolved isotope budgets (modeling/datasets focusing on novel marine isotope systems e.g. Cu\, Cd\, Zn\, Fe\, Ni etc.\, especially studies from the GEOTRACES program); and 3) interpreting sedimentary records\, particularly studies which link highly-sophisticated single-grain analyses of heavy minerals (zircon\, rutile\, apatite\, feldspar) to provenance and transport of sediment from source to sink. \n \nGEOTRACES-related sessions: \n \n14e: Climate and Biogeochemistry of Cryosphere EnvironmentsCo-convenors: Lori Ziolkowski\, Amy Townsend\, Ashley Dubnick\, Anders Carlson\, Sarah Aciego\, Alexandre Anesio\, Jill Mikucki \n \nGrowing observations indicate dramatic changes in the cryosphere. The cryosphere includes frozen environments derived from sources of freshwater (glacial and ice-sheet ice\, snow\, lake ice)\, salt water (sea ice\, ice shelves\, saline lakes) and soil (permafrost). In this session we focus on three important aspects of the cryosphere: • Ice sheets as agents that influence sea level\, and regional to global climate on orbital\, millennial\, centennial and anthropogenic timescales. Their dynamics need to be understood in the context of past climate changes; we will present new research across geomorphology\, glaciology\, geochemistry and oceanography that link paleoclimate information with ice sheet extent\, volume\, subglacial environments and regional and global climate change. • The history and ultimate fate of carbon released from arctic and alpine environments with implications for climate feedbacks in a warming world. We will present new research at the intersection of atmospheric\, oceanic and terrestrial chemistry including novel analytical techniques\, modeling and field measurements that study the carbon cycling of arctic and alpine environments. • Microbial organisms that have survive long-term encasement in an ice matrix and\, in some cases\, adapted to metabolize and even thrive within the ice. Evidence for their ability to influence the formation and decay of icy interfaces and to play important roles in the cycling of carbon and other climate is increasing. The inhabitants of Earth’s cryosphere also provide model systems for considering the evolution of life during Snowball Earth and possible analogs for life on other icy planets and moons. This session will bring together biologists\, biogeochemists\, glaciologists and astrobiologists to debate the most recent advances in understanding the habitation of ice on Earth — past\, present and possibly beyond. \n \n17a: Natural and Anthropogenic Impacts on Ocean Chemistry (Nutrients\, Oxygen and the Biological Pump)Co-convenors: Cecile Guieu\, Linn Hoffman\, Martha Gledhill\, Jay Cullen \nThe colloidal phase of estuarine and marine waters\, the interface between truly soluble and particulate matter\, remains one of the greatest enigma’s in the study of marine biogeochemistry. Methods for studying this phase are operational and for the most part differ among studies\, so with few exceptions then there are no means for quantitatively comparing findings. The colloidal phase itself comprises organic and inorganic materials\, and it seems clear that the relative distribution of these phases changes spatially and temporally\, even in oceanic environments. Sources comprise terrestrial outflow\, aerosols (either direct or indirect)\, and in-situ processes. Although in some cases colloid aggregation has been demonstrated to facilitate the removal of “dissolved” substances\, it also appears able to buffer truly soluble essential metals for phytoplankton growth (e.g.\, Fe). The aim of this session is to bring together those working on all aspects of marine-related colloids to gain a better understanding of our current state of knowledge of the marine colloidal phase. We particularly encourage presentations on the sources and processes affecting colloidal abundance and composition\, and their effects on marine biogeochemical cycles. \n \n17g: Hydrothermal Vents: Controls and Influences – Nano-Scale to Global – On Earth and BeyondConvenors: Emma A. A. Versteegh\, Kathrin Streit\, Max Coleman \n \nDeep-sea hydrothermal vents are hot spots for geochemical interactions. They have complex tectonic and structural controls\, and in turn influence physical and biological processes on a wide range of spatial scales. These systems have been increasingly intensively studied since their discovery 37 years ago\, and much scientific progress was made in recent years. Technical developments continuously improve our ability to investigate these extreme environments. Geochemists with diverse scientific backgrounds have made major contributions to our understanding of hydrothermal vent systems. This session aims to bring together these researchers\, working at any of the relevant spatial scales on all aspects of hydrothermal vent geochemistry. Potential topics might include but are not limited to\, the role of vents in global geochemical cycles (e.g. C\, S and Fe)\, tectonic and structural controls on hydrothermal circulation and water-rock interaction\, rock\, and fluid chemistry\, and the spectrum of ecosystems they support. We also encourage contributions looking at the potential significance of hydrothermal vents in the origin of life and in astrobiology\, for example\, habitability and potential biosignatures on the moons of the Outer Planets. \n \n19c: The Biogeochemical Cycling of the Nutrients N\, P and Si: Terrestrial and Marine Insights for the Present\, Past and FutureCo-convenors: Karen Casciotti\, Troy Baisden\, Gabriel Filippelli\, Mak Saito \n \nNutrients (e.g.\, Nitrogen\, Phosphorous and Silicon) underpin vital processes within Earth’s ecosystems. In modern-day systems\, these nutrient cycles exhibit complex\, non-linear dynamics. Paleo-studies of nutrient cycles also suffer from this complexity\, combined with imperfect geochemical preservation of evidence. New developments in biogeochemistry are improving our ability to describe nutrient dynamics in contemporary systems\, and when combined with models\, may also improve our ability to interpret the past and predict future responses of nutrients to global change. We consider both biologically-mediated nutrient cycles as well as cycles with competing biotic and abiotic regulation of sources or sinks. This theme encourages insights describing how biogeochemical nutrient dynamics can be understood in the face of apparent complexity\, and applied to global changes in the past or future. \n \n19f: Biogeochemical Processes Influencing Mobilization\, Transformations\, and Bioavailability of MercuryCo-convenors: Helen Hsu-Kim\, Nathan Yee\, Andrew Graham \n \nMercury is a global pollutant and a neurotoxin that presents significant risks for human health. Solutions to the mercury problem can be difficult\, due to the complex array of processes that ultimately lead to food web accumulation of this element in the form of monomethylmercury. This session will focus on the biogeochemical processes that influence the geochemical speciation of mercury\, transport in the environment\, and bioaccumulation. Specific topics include photochemical transformations\, redox-related processes\, biochemical pathways involved in net methylmercury production\, and the consequences of climate change on the global Hg cycle.
URL:https://www.geotraces.org/event/goldschmidt-2014/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20140601
DTEND;VALUE=DATE:20140607
DTSTAMP:20260424T135128
CREATED:20130611T102909Z
LAST-MODIFIED:20130611T102909Z
UID:1864-1401580800-1402099199@www.geotraces.org
SUMMARY:International Conference on Atmospheric Dust
DESCRIPTION:International Conference on Atmospheric DustDates: 1-6 June 2014Location: Castellaneta Marina\, Italy \n \nFor futher information: http://www.dust2014.org \n \nGEOTRACES relevant sessions:  \n \nDust in the Sea — Impact on Biogeochemistry and ClimateChristel S. Hassler – Université de Genève – CHVéronique Schoemann – Université Libre de Bruxelles – BEDust laden nutrients deposited in surface waters affect phytoplankton with impact for their primary productivity\, biomass and biodiversity. Primary productivity is a critical step for climate regulation. Given that iron limits primary productivity in up to 30 % of the ocean and that most of the dust being deposited bear a significant amount of iron\, its solubility\, reactivity and bioavailability are actively studied. Such research goals are part of the GEOTRACES international science program. In order to improve our understanding of the links between continental dust\, the ocean and the carbon cycle\, this session welcomes contributions on the fate of elements delivered by atmospheric dust to the ocean\, their bioavailability and their implication for the primary productivity. As the consequences from global change on dust deposition and atmospheric processing remain unknown\, contributions on the global impact of dust oceanic deposition nowadays but also in the future are also welcome.
URL:https://www.geotraces.org/event/international-conference-on-atmospheric-dust/
CATEGORIES:GEOTRACES Relevant Special Sessions
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