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DTSTART;VALUE=DATE:20170709
DTEND;VALUE=DATE:20170715
DTSTAMP:20260424T152035
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:20260424T152035
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:20260424T152035
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:20260424T152035
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:20260424T152035
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:20260424T152035
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:20260424T152035
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:20260424T152035
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:20260424T152035
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
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20150928
DTEND;VALUE=DATE:20151003
DTSTAMP:20260424T152035
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:20260424T152035
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:20260424T152035
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
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20150614
DTEND;VALUE=DATE:20150620
DTSTAMP:20260424T152035
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:20260424T152035
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:20260424T152035
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:20260424T152035
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
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20141027
DTEND;VALUE=DATE:20141101
DTSTAMP:20260424T152035
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
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20140728
DTEND;VALUE=DATE:20140802
DTSTAMP:20260424T152035
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
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20140608
DTEND;VALUE=DATE:20140614
DTSTAMP:20260424T152035
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:20260424T152035
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
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20140223
DTEND;VALUE=DATE:20140301
DTSTAMP:20260424T152035
CREATED:20120305T091713Z
LAST-MODIFIED:20120305T091713Z
UID:1783-1393113600-1393631999@www.geotraces.org
SUMMARY:2014 Ocean Sciences Meeting
DESCRIPTION:2014 Ocean Sciences Meeting Dates: 23-28 February 2014Location: Honolulu\, HI\, USA. \nFor more information: http://www.sgmeet.com/osm2014/default.asp \nGEOTRACES-Town Hall Meeting: \nGEOTRACES Intermediate Data ProductDate: Tuesday\, February 25\, 2014 Time: 12:45:00 PM \nThe GEOTRACES program will publicly release its first data product. The nature of the data to be 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. 618 stations (49 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 \nGEOTRACES-Relevant Sessions: \n018 – Advancing the frontiers of the Si cycle in terrestrial\, coastal\, and open ocean ecosystems \nOrganizers: Paul Treguer\, European Institute for Marine Studies; Joanna Carey\, U.S. Environmental Protection Agency; Mark Brzezinski\, Marine Science Institute\, University of California; Christina De La Rocha\, European Institute for Marine Studies; Robinson Fulweiler\, Boston University; Manuel Maldonado\, Centro de Estudios Avanzados de Blanes. \nRecent work in a variety of systems and across a range of spatial scales has shown that the silicon (Si) cycle is unexpectedly dynamic and perhaps far from steady state. These new findings also highlight many unknowns. It is now recognized that terrestrial vegetation plays a critical role in the recycling of biogenic Si (BSi) and the ultimate flux of Si to the coastal ocean. However\, these land-to-sea pathways are poorly constrained and we know little about how human activities directly alter the magnitude and timing of Si transport to the ocean. Additionally\, atmospheric Si deposition remains largely un-quantified. Within marine systems\, rates of BSi production\, dissolution\, and export by non-diatoms (e.g.\, sponges\, radiolarians\, and some cyanobacteria) are inadequately known\, as are rates of Si effluxes from hydrothermal vents. Moreover\, we lack data on rates of reverse weathering and low temperature basalt dissolution on continental margins and in the deep sea. This session will address key issues related to the biogeochemical cycling of Si\, including magnitude and rates of Si cycling in previously understudied reservoirs of the biosphere. We welcome contributions from terrestrial and aquatic systems\, including\, but not limited to\, rivers\, wetlands\, estuaries\, continental margins\, and the deep sea. \n  \n037 – Dynamics of Coupled Processes in the Ocean: A tribute to the career of Dr. James Murray \nOrganizers: Laurie Balistrieri\, USGS/UW Oceanography; Kathryn Kuivila\, USGS; Hans Jannasch\, MBARI \nWorking on research issues that cross discipline boundaries and involve multidisciplinary teams is both challenging and rewarding. Many of the fundamental science issues of our day\, such as climate change\, ocean acidification\, and human impacts on coastal oceans\, require researchers to bridge traditional disciplines and collectively work to synthesize a broader understanding of complex earth system processes at diverse scales. This session intends to bring together scientists who work on understanding the dynamics of coupled processes in the oceans\, provide opportunities for enhanced and new collaborations\, and pay tribute to the career of Dr. James Murray upon his retirement. The focus of his career has been interdisciplinary research in chemical oceanography and aquatic chemistry\, and we invite contributions from researchers involved in Dr. Murray’s main areas of research in coastal and open oceans: Particle reactive chemical tracers of biogeochemical processes; Role of iron and other metals in controlling food-web structure and new production; Carbon\, nitrogen\, and metal cycling across redox boundaries in sediments and water columns; Links among climate change\, ocean acidification\, and fossil fuel/energy supplies. \n  \n080 – Biogeochemistry of Trace Elements and their Isotopes \nOrganizers: Rob Middag\, University of Otago; Alessandro Tagliabue\, University of Liverpool; Peter Sedwick\, Old Dominion University; Claudine Stirling\, University of Otago; Andrew Bowie\, University of Tasmania; Jingfeng Wu\, University of Miami. \nTrace elements and their isotopes (TEIs) are critically important in regulating ocean biology\, as tracers of oceanic processes\, and as paleoceanographic tools. The past decade has seen major advances in our understanding of the distribution\, cycling\, and biogeochemical function of TEIs in the ocean\, afforded by the first basin-scale surveys completed as part of the CLIVAR and GEOTRACES programs\, and by concurrent advances in chemical and isotopic analysis\, numerical modeling and molecular biology. In this session\, we invite contributions that address the biogeochemical cycling of TEIs in the ocean\, with three main themes: (1) the distribution and physico- chemical speciation of TEIs in the ocean\, including results from recent GEOTRACES field activities and intercalibration efforts; (2) the exchange of TEIs between the lower atmosphere and the upper ocean; and (3) parallel studies of TEIs that inform our understanding of key regulatory processes\, including their input\, speciation\, biological cycling and removal. \n  \n092 – From VERTEX to GEOTRACES: honoring Ken Bruland’s contributions to marine biogeochemical cycles \nOrganizers: Gregory Cutter\, Old Dominion University; Ana Aguilar-Islas\, University of Alaska; Kristen Buck\, Bermuda Institute of Ocean Sciences; William Landing\, Florida State University; Maeve Lohan\, Plymouth University. \nStudying marine biogeochemistry requires highly interdisciplinary approaches that include multiple stable and radioactive elements\, appropriate analytical methods to reveal concentrations and chemical speciation\, collection methods to distinguish size fractionation\, and of course tight coupling with biological investigations. One of the leaders in marine biogeochemistry is Ken Bruland who started developing his pioneering methods in the mid 1970s\, refined them in the VERTEX cruises of the early 1980s\, and has continued changing biogeochemical paradigms into the present day GEOTRACES program. In honor of his retirement\, this session seeks presentations on\, or approaches to\, studying marine biogeochemical processes. These can range from bacteria to radionuclides\, trace to major elements\, atmosphere to sediments\, estuaries to the open ocean\, and present-day to paleoceanographic processes. \n  \n114 – Application of natural and anthropogenic radionuclides to the study of ocean processes \nOrganizers: Matt Charette\, WHOI; Marcus Christl\, ETH Zurich; Nuria Casacuberta\, ETH Zurich; Ken Buesseler\, WHOI. \nThe goal of GEOTRACES is to identify processes and quantify fluxes that control the distribution of trace elements and isotopes (TEIs) in the ocean\, and to establish the sensitivity of these distributions to changing environmental conditions. Natural uranium/thorium series\, anthropogenic and cosmogenic radionuclides\, with their in-built clocks\, their different input functions\, and contrasting geochemical properties and biological affinities are essential tools for interpreting lateral and vertical TEI distributions in the ocean. This session will focus on international GEOTRACES and other marine studies that employ radionuclides to quantify TEI particle cycling rates and fluxes\, land-derived inputs (e.g. groundwater\, rivers)\, bottom boundary layer processes (e.g. sediment resuspension\, hydrothermal vents) and atmospheric inputs. We further invite submissions on anthropogenic tracers from all compartments of the oceans (sea water\, sediments\, corals\, biota\, etc.)\, including studies that may help constrain or trace accidental (e.g. Chernobyl\, Fukushima) or authorized (e.g. nuclear reprocessing plants) releases into the ocean. Contributions related to observational studies and modeling applications are welcome\, as well as presentations on novel developments in radionuclide detection and sampling in the environment. \n  \n116 – Advances in approaches to assess metal-binding organic ligands and perspectives on the impacts of ligands on metal-biota interactions in the oceans \nOrganizers: Maeve Lohan\, University of Plymouth; Kristen Buck\, Bermuda Institute of Ocean Sciences; Sylvia Sander\, University of Otago. \nThe bioactive trace metals iron (Fe)\, copper (Cu)\, cobalt (Co)\, nickel (Ni)\, zinc (Zn) and cadmium (Cd) are essential micronutrients for marine phytoplankton and exert a major influence on the global carbon and nitrogen cycles. Fully understanding the marine carbon and nitrogen cycles is\, thus\, intimately tied to our efforts to determine the distribution\, chemical speciation and resulting bioavailability of trace metals to the marine biota. Complexation of these metals by organic ligands may enhance or reduce bioavailability depending upon the metal-ligand complex formed. Yet\, we know little about the composition\, source and provenance of metal-binding ligands\, which is hindering further advances in the field of trace metal biogeochemistry. New and fruitful collaborations between trace metal biogeochemists\, organic geochemists and biogeochemical modelers are being achieved through a SCOR working group (WG139) “Organic Ligands-A key control on trace metal cycling in the ocean”. We invite submissions to this session that highlight recent accomplishments in metal-binding ligand characterization and in approaches for assessing ligand distributions\, composition\, sources\, cycling processes\, and impacts on metal- biota interactions in the oceans. \n  \n146 – Marine micronutrient trace element cycling in oxygen minimum zones \nOrganizers: David Janssen\, University of Victoria; Maija Heller\, University of Southern California; Christina Schallenberg\, University of Victoria. \nThis session aims to further the understanding of the chemical speciation and biogeochemical cycling of micronutrient trace elements and macronutrients and their isotopes in ocean oxygen minimum zones (OMZs). Redox cycling of trace metals (e.g. Fe\, Cu\, Mn\, Co) and other aqueous species (e.g. SO42-/S2-) is known to significantly influence marine trace metal solubility and bioavailability. A growing body of data from OMZ waters\, through efforts such as the international GEOTRACES program\, illustrates the potential control of oxygen minima on regional and basin scale distributions of trace metals. Model projections predict that oxygen minima will intensify and will expand in spatial extent due to global climate change. Therefore\, increasing our understanding of the influence that oxygen minima exert on trace metal and macronutrient cycling and bioavailability is essential for explaining current and future oceanic distributions of bioactive trace metals and isotopes. This session welcomes contributions discussing the redox cycling\, sources\, sinks and speciation of trace elements and macronutrients and their isotopes in OMZ waters. \n  \n060 – Submarine Groundwater Discharge – from Ridge to Reef: Groundwater Evolution\, Climate\, Land-Use\, Coastal Hydrology and Marine Biogeochemical Impacts \nOrganizers: Steven Colbert\, University of Hawaii Hilo; Henrieta Dulaiova\, University of Hawaii; Craig R. Glenn\, University of Hawaii; Jason Adolf\, University of Hawaii \nSubmarine groundwater discharge (SGD) is now recognized as a significant source of biogeochemically important components to the coastal ocean. Groundwater discharge studies in diverse coastal systems are vitally important to establish baseline characteristics of current SGD behavior and its implications on coastal biogeochemistry before we can anticipate future effects of climate change\, sea level rise\, and population increase. This session invites presentations (both oral and poster) on 1) upstream processes that influence SGD from the land\, such as rock-water interactions\, watershed studies that examine natural and anthropogenic controls on groundwater recharge\, transport and composition\, including climate\, hydrogeology and land use; 2) measurement and modeling of SGD that reveal its spatial and temporal variability\, physicochemical properties\, as well as biogeochemical processes within the subterranean estuary; and 3) downstream coastal effects of SGD\, including biological response\, biogeochemistry\, chemical budgets of elements\, contaminant fates\, and coastal zone management. We seek to better understand the interplay between all of these factors\, and all contributions related to submarine groundwater discharge origins\, transformations\, fates and impacts of are welcome.
URL:https://www.geotraces.org/event/2014-ocean-sciences-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20130911
DTEND;VALUE=DATE:20130914
DTSTAMP:20260424T152035
CREATED:20131008T130248Z
LAST-MODIFIED:20131008T130248Z
UID:1877-1378857600-1379116799@www.geotraces.org
SUMMARY:2013 Japan Association of Mineralogical Sciences Annual Meeting
DESCRIPTION:2013 Japan Association of Mineralogical Sciences Annual MeetingDates: 11-13 September 2013Location: University of Tsukuba\, Japan. \nFor further information: http://jams.la.coocan.jp/e_index.html \nGEOTRACES-relevant Sessions: \nTrace metals and their isotopes in the oceanCo-conveners: H Obata\, J Zhang\, K Norisuye and K Horikawa. \n 
URL:https://www.geotraces.org/event/2013-japan-association-of-mineralogical-sciences-annual-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20130825
DTEND;VALUE=DATE:20130831
DTSTAMP:20260424T152035
CREATED:20120305T093622Z
LAST-MODIFIED:20120305T093622Z
UID:1784-1377388800-1377907199@www.geotraces.org
SUMMARY:Goldschmidt 2013
DESCRIPTION:Goldschmidt 2013   Dates:   25-30 August 2013 Location: Florence – Italy  \nFor further information: http://goldschmidt.info/2013/index \n  \nGEOTRACES Relevant Special Sessions: \n \n* 16h. Chemical Weathering in Marginal EnvironmentsConvenors: Bernhard Peucker-Ehrenbrink and Morgan JonesKeynote: Catherine Jeandel (LEGOS\, Toulouse) \nThis session aims at focusing on chemical weathering processes not taking place in the soils but in deeper aquifers\, in floodplains\, in estuaries and in marine sediments. It is of particular importance to evaluate the diversity of processes at play and their quantitative importance. Is our view of the global chemical weathering picture or global carbon cycle significantly modified when these marginal weathering environments are taken into account? \n \n*17a. The ins and outs of mud: chemical fluxes between sediments and seawaterConvenors: Silke Severmann and Rachel Mills Keynote: Ronnie N. Glud (University of Southern Denmark) \nMarine sediments are the ultimate sink for many constituents in seawater\, but this flux is significantly moderated at the seafloor before burial. Solute exchange between marine sediments and the overlying water column is occurring throughout the ocean basins. Elemental mass fluxes operate in both directions\, often with profound effects on the local or global seawater chemistry. Rates of exchange are sensitive to various internal and external forcing mechanisms that operate on seasonal to geological time scales. In the shelf seas the benthic boundary layer communicates with the surface ocean through upwelling and mixing\, thus providing a feedback between primary productivity and benthic respiration. Seafloor exchange in the deep ocean can contribute significantly in terms of the element’s global mass balance. Microbial processes are important drivers for many of these exchange processes in shallow and deep-sea sediments. \nTechnical innovations have led to improved quantification of these fluxes in the modern ocean\, while development of novel paleo-proxies provide new insight into changes in the nature and rate of benthic-pelagic exchange over longer time scales. This session invites contributions that examine the process regulating benthic exchange\, as well as techniques to quantify these fluxes on a variety of time scales. \n \n* 17b. Constraining rates of ocean processesConvenors: Laura Robinson and Matt Charette Keynote: Bill Jenkins (WHOI) \nImportant physical\, chemical\, and biological processes in the ocean occur over a wide range of timescales from seconds up to millennia. Geochemical tracers provide tools to assess the rates and timescales of these processes. For example radiocarbon\, nuclear bomb test products and long-lived U-series isotopes have been used to look at oceanic overturning circulation rates. Radiogenic thorium has been used to quantify fluxes of particles (and carbon) through the water column and to the seafloor\, and radium has been used examine the extent of lateral advection from the continents to the ocean interior. These and other traditional and novel approaches provide insight into ocean mixing and biogeochemical cycling processes central to the ocean’s interaction with the Earth system as a whole. In this session we welcome contributions that use geochemical approaches to examining the rates of oceanic processes both in the modern ocean and in the past. Invited speakers – Bob Anderson and Pieter Van Beek. \n \n*17d Isotope geochemistry of the modern oceansConvenors: Seth John \, Julie Granger\, Katharine Pahnke and Gregory F. de SouzaKeynote: Curtis Deutsch (University of Washington) \nIsotopic tracers are a powerful tool for studying the balance between physical circulation and biogeochemical processes that govern the cycling of elements within the global ocean. While the impact of the large-scale circulation on the marine distribution of radiogenic isotopes has long been recognized\, the recent increase in measurements of stable isotopes in seawater has made it also possible to observe interactions between circulation and stable isotope distributions. This session aims to bring together these two fields by encouraging contributions pertaining to stable isotope constraints on the cycling of globally important macro- and micronutrients (e.g. nitrate δ15N\, nitrate δ18O\, δ30Si\, δ56Fe\, δ114Cd)\, as well as isotopic proxies that trace ocean circulation pathways (e.g. εNd). To this end\, we explicitly solicit contributions from both the modeling and observational communities. While this session emphasizes isotopic tracers\, other data (e.g. trace elements) that elucidate the interactions between physical circulation and biogeochemical processes governing marine elemental distributions in the modern or past ocean are also welcome. \n*17g Metal-biota interactions in seawaterConvenors: Jay Cullen\, Maeve Lohan and Martha GledhillKeynote: Mak Saito (Woods Hole) \nRecent advances in analytical chemistry and molecular biological techniques indicate that trace metal micronutrients play an important role in regulating the species composition and physiological rate processes of the marine microbial community. Fully understanding the marine carbon and nitrogen cycles is thus intimately tied to our efforts to determine the distribution\, chemical speciation and resulting bioavailability of trace metals to the marine biota. New and fruitful collaborations between chemical oceanographers and microbial physiologists are being achieved through\, for example\, high spatial resolution data as obtained via the ongoing international GEOTRACES program (www.geotraces.org). We invite submissions to this session which highlight trace metal-biota interactions and the complex interlacing of geochemical\, physiological and ecological maps which shape the tempo and mode of carbon and nitrogen transformations in the ocean. \n​
URL:https://www.geotraces.org/event/goldschmidt-2013/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20130804
DTEND;VALUE=DATE:20130810
DTSTAMP:20260424T152035
CREATED:20130402T114014Z
LAST-MODIFIED:20130402T114014Z
UID:1849-1375574400-1376092799@www.geotraces.org
SUMMARY:The 2013 Gordon Research Conference on Chemical Oceanography
DESCRIPTION:The 2013 Gordon Research Conference on Chemical OceanographyDates: 4-9 August 2013Location: University of New England\, in Biddeford\, Maine\, USA \nApplication Deadline: 7 July 2013 \nFor further information: http://www.grc.org/programs.aspx?year=2013&program=chemocean
URL:https://www.geotraces.org/event/the-2013-gordon-research-conference-on-chemical-oceanography/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20130624
DTEND;VALUE=DATE:20130629
DTSTAMP:20260424T152035
CREATED:20130515T091915Z
LAST-MODIFIED:20130515T091915Z
UID:1862-1372032000-1372463999@www.geotraces.org
SUMMARY:AOGS 2013\, Asia Oceania Geosciences Society Annual Meeting
DESCRIPTION:2013 Asia Oceania Geosciences Society Annual Meeting (AOGS2013)Dates: 24-28 June 2013Location: Brisbane\, Australia \nFor futher information: http://asiaoceania.org/aogs2013/public.asp?page=home.htm \nGEOTRACES Relevant Session: \nControls on the Biogeochemistry of the Northwestern Pacific Ocean and its Adjacent Marginal SeasMain Convener: Dr. Tung-Yuan Ho (Academia Sinica\, Taiwan)Co-conveners: Dr. Sohrin Yoshiki (Kyoto University\, Japan)\, Prof. I-I Lin (National Taiwan University\,Taiwan) and Dr. George T F Wong (Academia Sinica\, Taiwan) \nThe Northwestern Pacific Ocean and its adjacent marginal seas is an important and notable biogeochemical province in the world’s oceans. It includes the largest marginal sea of the world\, the South China Sea\, and some world class shelf-seas (e.g.\, the East China Sea and Northern South China Sea Shelf-sea and the Sunda Shelf). Its biogeochemistry is driven by diverse anthropogenic and natural forcings at strengths that are among the strongest in the world. They include riverine inputs from some of the major rivers of the world such as the Changjiang\, Huangho\, Pearl River and Mekong River\, atmospheric deposition with material from multiple origins (including desert dust\, volcanic aerosols\, anthropogenic aerosols\, biomass burning) at some of the highest fluxes in the world\, typhoons occurring at frequencies and strengths that are among the highest in the world\, internal waves with amplitudes that are almost unmatched in the world and one of the two primary western boundary currents in the world’s oceans. In addition\, it is also affected by global phenomena such as El Niño-Southern Oscillation\, La Niña\, ocean acidification and global warming. This joint (BG-OS-AS) session welcomes submissions of studies from broad disciplines in the biogeochemistry of the region\, including observations\, modeling\, and remote sensing efforts.
URL:https://www.geotraces.org/event/aogs-2013-asia-oceania-geosciences-society-annual-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20130217
DTEND;VALUE=DATE:20130223
DTSTAMP:20260424T152035
CREATED:20120305T091150Z
LAST-MODIFIED:20120305T091150Z
UID:1782-1361059200-1361577599@www.geotraces.org
SUMMARY:ASLO 2013\, Aquatic Sciences Meeting
DESCRIPTION:ASLO 2013\, Aquatic Sciences MeetingDates: 17-22 February 2013Location: New Orleans\, Louisiana \nFor further information: http://www.aslo.org/meetings/neworleans2013/ \nGEOTRACES relevant sessions: \n**SS57: Trace Elements and Isotopes in the Ocean and Atmosphere: the International GEOTRACES ProgramConveners: Peter Morton\, Florida State University; Carl Lamborg\, Woods Hole Oceanographic Institution. \nThe international GEOTRACES program is a multi-nation and multi-year effort to determine the concentration and speciation of trace elements and select isotopes in the world’s major ocean basins and some marginal seas at high vertical and horizontal resolution\, reminiscent of the GEOSECS program. This program’s goal is “to improve the understanding of biogeochemical cycles and large-scale distribution of trace elements and their isotopes in the marine environment.” ( www.geotraces.org). To date\, 35 “GEOTRACES compliant” section and process cruises have been completed and many more are planned. For this session\, we invite investigators to share their findings from any GEOTRACES cruise including those related to dissolved and particulate trace elements\, isotopes\, nutrients and dissolved gases as well as atmospheric analyses. We also welcome presentations describing intercalibration\, data management and modeling efforts related to GEOTRACES process and section studies. \n**SS08: Biogeochemistry of Metal-binding Organic Ligands in the Ocean: Sources\, Composition and Impacts on Trace Metal CyclingConveners: Maeve C. Lohan\, University of Plymouth; Sylvia G. Sander\, University of Otago; Kristen N. Buck\, Bermuda Institute of Ocean Sciences \nThe bioactive trace metals iron\, copper\, cobalt\, nickel\, zinc and cadmium are essential micronutrients for marine phytoplankton and exert a major influence on the global carbon cycle. Complexation of these metals by organic ligands may enhance or reduce bioavailability depending upon the metal-ligand complex formed. Yet we know little about the composition\, sources and cycling of metal-binding ligands\, which is hindering further advances in the field of trace metal biogeochemistry. An active SCOR Working Group (WG 139) ‘Organic Ligands- A Key Control on Trace Metal Cycling in the Ocean’ fosters the multidisciplinary collaboration of trace metal biogeochemists\, organic geochemists and biogeochemical modelers in order to advance this field. This session is a community wide forum to highlight recent accomplishments in metal-binding ligand characterization and approaches for assessing ligand composition\, sources and impacts on trace metal cycling in the aquatic environment\, and to discuss future efforts in this field. We welcome abstracts related to metal-binding ligands from throughout the multidisciplinary field of oceanography.
URL:https://www.geotraces.org/event/aslo-2013-aquatic-sciences-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20130106
DTEND;VALUE=DATE:20130111
DTSTAMP:20260424T152035
CREATED:20120710T074202Z
LAST-MODIFIED:20120710T074202Z
UID:1818-1357430400-1357862399@www.geotraces.org
SUMMARY:93rd AMS Annual Meeting
DESCRIPTION:93rd American Meterological Society (AMS) Annual MeetingDates: 6-10 January 2013Location: Austin\, Texas\, US  \nFor further information: http://annual.ametsoc.org/2013/ \nAbstract submission deadline: 1 August 2012  \nGEOTRACES Relevant Session:  \n2013 Robert A. Duce Symposium: “Air-Sea Chemical Exchange: Impacts on the Atmosphere and Ocean” \nIt will honor Bob’s distinguished contributions to research related to chemical cycles of pollutant and natural substances in the global atmosphere and\, in particular\, atmospheric transport of chemicals from the continents\, their deposition to the ocean and impact on marine biogeochemistry\, atmospheric chemistry and climate\, with studies in Antarctica\, the Arctic\, and all the world’s ocean.The symposium will also recognize his leadership of the atmospheric/oceanic science community both in the US and internationally.
URL:https://www.geotraces.org/event/93rd-ams-annual-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
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DTSTART;VALUE=DATE:20121203
DTEND;VALUE=DATE:20121208
DTSTAMP:20260424T152035
CREATED:20120305T092307Z
LAST-MODIFIED:20120305T092307Z
UID:1802-1354492800-1354924799@www.geotraces.org
SUMMARY:American Geophysical Union Fall 2012 Meeting
DESCRIPTION:American Geophysical Union Fall 2012 MeetingDates: 3-7 December 2012Location:  San Francisco\, California\, USA \nFor more information: http://fallmeeting.agu.org/2012/ \nGEOTRACES Relevant sessions: \n **OS013: Isotope Tracers in the 21st Century Ocean: New Results\, Interesting Challenges\, and Unique OpportunitiesConveners: Steven L Goldstein (Columbia University)\, Alison E Hartman (Lamont-Doherty Earth Observatory)\, Howie D Scher (University of South Carolina) and Torben Stichel (University of Hawaii at Manoa). \n Bioactive\, particle-reactive\, and provenance-sensitive elements with isotopic variability in seawater are widely used to trace present and past processes in the oceans. Current research efforts\, such as GEOTRACES\, are increasingly multi-proxy\, high resolution\, and require smaller samples due to recent advances in mass spectrometry. Together these advances provide unprecedented opportunities to address source-to-sink questions and integration of tracers of different processes. This session brings together groups with new results from isotope tracers (Th\, Pa\, Nd\, Hf\, Cd\, Fe\, etc.) in the hopes of revealing new developments in our understanding of chemical cycling of the oceans \n**OS036: Sources\, Sinks\, and Speciation of Marine Micronutrient Trace ElementsConveners: Jessica N Fitzsimmons (MIT) and Christopher T Hayes (Columbia University
) \nMarine primary production can be limited by the concentration of micronutrient trace metals such as Fe. Linking micronutrient supply to biology remains a challenge\, however\, because of a poor understanding of the marine distribution and cycling of these metals. The de-convolution of micronutrient biogeochemical cycles is aided by an investigation of their size partitioning/chemical speciation\, as well as the cycles of other metals (such as Al\, Th) that constrain individual parts of the micronutrient cycle. This session welcomes data from recent GEOTRACES cruises\, process studies\, or modeling efforts focused on understanding the distribution\, supply\, removal\, or chemical speciation of marine micronutrient trace elements.
URL:https://www.geotraces.org/event/american-geophysical-union-fall-2012-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20121015
DTEND;VALUE=DATE:20121018
DTSTAMP:20260424T152035
CREATED:20120604T061913Z
LAST-MODIFIED:20120604T061913Z
UID:1816-1350259200-1350518399@www.geotraces.org
SUMMARY:Open Science Symposium on Western Pacific Ocean Circulation and Climate (OSS-2012)
DESCRIPTION:Open Science Symposium on Western Pacific Ocean Circulation and Climate (OSS-2012)Dates: October 15-17\, 2012Location: Qingdao\, ChinaFor further information: http://oss2012.csp.escience.cn \nAbstract submission deadline: July 15\, 2012Financial support application deadline:  July 30\, 2012 \nGEOTRACES Relevant Session: \nTheme 5: Carbon cycling\, biogeochemistry and ecosystem in the Western Pacific Ocean (WPO) \nTheme Conveners： Minhan Dai (Xiamen University\, China\, mdai@xmu.edu.cn)\, Fei Chai (University of Maine\, USA\, fchai@umaine.edu)\, James D. Murray (University of Washington\, jmurray@u.washington.edu)\, Francisco P. Chavez (Monterey Bay Aquarium Research Institute\, USA\, chfr@mbari.org)\, Tukul Rameyo Adi (Agency for Marine and Fisheries Research\, Indonesia\, rameyo_adi@dkp.go.id). \nThe Open Science Symposium on Western Pacific Ocean Circulation and Climate (OSS-2012) is to be jointly organized by Northwestern Pacific Ocean Circulation and Climate Experiment (NPOCE\, http://npoce.qdio.ac.cn/default.asp) and Southwest Pacific Ocean Circulation and Climate Experiment (SPICE). The objectives of OSS-2012 is to provide a forum for oceanographers and meteorologists to exchange recent progresses and advances in their study of the Western Pacific Ocean (WPO) circulation and climate\, marine biogeochemistry and ecosystem\, their variability\, change and impact\, to explore opportunities for international collaboration\, and to promote interdisciplinary study.
URL:https://www.geotraces.org/event/open-science-symposium-on-western-pacific-ocean-circulation-and-climate-oss-2012/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20120624
DTEND;VALUE=DATE:20120630
DTSTAMP:20260424T152035
CREATED:20101126T124837Z
LAST-MODIFIED:20101126T124837Z
UID:1709-1340496000-1341014399@www.geotraces.org
SUMMARY:Goldschmidt 2012
DESCRIPTION:Goldschmidt 2012Dates: 24-29 June 2012Location: Montréal – CanadaFor further information: http://www.vmgoldschmidt.org/2012/index.htm \nAbstract submission is closed. \nRelevant sessions: \n10a. Proxy development for paleoclimate and paleocean chemistryCo-convenors: Ann Russell (University of California at Davis) – Pamela Martin (University of Chicago) – Bärbel Hönisch (Lamont-Doherty Earth Observatory \n10c. Past and future changes in ocean circulationCo-convenors: Eric Galbraith (GEOTOP-McGill University) – Laura Robinson (University of Bristol) \n11a. Biogeochemical cycling of aerosols and their effects in the evolving Earth’s climate(co-hosted by Themes 11 and 10)Co-conveners: Nicholas Meskhidze (North Carolina State University) – Ina Tegen (Institute for Tropospheric Research\, Leipzig\, Germany)   \n12b. Pa and Th distributions in the ocean: controlling mechanisms(co-hosted by Themes 12 and 13)Co-convenors: Abel Guihou (SUNY-Stony Brook) – Robert F Anderson (LDEO of Columbia University) \n12e. Present and past biogeochemical cycling of nutrients and metals in high latitude marine environments(co-hosted by Themes 12 and 16)Co-convenors: Dr. Laura Wehrmann (University of California Riverside\, USA) – Dr. Christian März (Newcastle University\, UK)  \n12g. Contribution of submarine groundwater discharge to oceanic chemical cycles(co-hosted by Themes 12 and 22)Co-convenors: Aaron Beck (Virginia Institute of Marine Science) – Richard Peterson (Coastal Carolina University) \n13b. Geochemical proxies for past ocean circulationCo-convenors: Anton Eisenhauer (IFM-GEOMAR/Kiel) – Steven L. Goldstein (Lamont-Doherty Earth Observatory) – Ralph Schneider (Universität Kiel) \n13d. GEOTRACES\, the international science programCo-convenors: Géraldine Sarthou (Université de Brest) – Kazuyo Tachikawa (CEREGE\, France) – Tina van De Flierdt (Imperial College\, London) \n17e.The application of synchrotron X-ray techniques to study marine biogeochemical cyclesCo-convenors: Phoebe J. Lam (Woods Hole Oceanographic Institution) – Brandy M. Toner ( University of Minnesota – Twin Cities) – Benjamin S. Twining (Bigelow Laboratory for Ocean Sciences) \nDescriptions: \n*10a. Proxy development for paleoclimate and paleocean chemistry(co-hosted by Themes 10 and 13)Co-convenors: Ann Russell (University of California at Davis) – Pamela Martin (University of Chicago) – Bärbel Hönisch (Lamont-Doherty Earth Observatory)Development of geochemical proxies for reconstructing past climatic and ocean chemical conditions is a key component of paleoclimate and paleoceanographic research and essential for gleaning insight into the Earth’s future from its history. Archives of paleoenvironmental information include both biogenic and authigenic precipitates and isolating an environmental signal can be convoluted by post-depositional overgrowths. Covariation of environmental parameters can also make it difficult to calibrate the response of a proxy to a single environmental parameter. In deep time\, additional complications can arise when the possible controls over proxy relationships are less constrained and different_from_modern seawater chemistry may change proxy relationships from the conditions under which the proxy was calibrated.This session seeks to share progress on identifying the primary geochemical mechanisms and environmental controls over marine proxies\, as well as approaches and tools for addressing post- depositional alteration. We welcome contributions focused on the geochemistry of proxies from carbonates\, diatoms\, organic material\, as well as bulk sediments and authigenic precipitates. We encourage analytic method development and specifically contributions that go beyond empirical correlations between ocean parameters and proxy signals\, which may improve the quality of proxy applications by delving into the mechanistic basis for the relationship.Keynote speaker: TBA \n*10c. Past and future changes in ocean circulationCo-convenors: Eric Galbraith (GEOTOP-McGill University) – Laura Robinson (University of Bristol)Despite decades of research\, the large-scale drivers of deep-ocean circulation – and its susceptibility to change – remain poorly understood. Ocean mixing\, especially vertical mixing\, is of critical importance to this circulation\, but is difficult to observe in the modern ocean. Paleoceanographic records offer great potential in constraining past changes in ocean circulation\, which can help reveal natural variability of ocean mixing\, while ocean models can provide insight into mechanisms\, constrained by present-day observations. Together\, these approaches help to predict the biogeochemical impacts of future changes in ocean circulation. This session aims to bring together geochemical observations and theory that can shed light on ocean mixing and its impacts on ocean circulation\, and gas and nutrient cycling in the past\, present and future. We invite contributions that can constrain or quantify deep ocean circulation on any timescale\, and particularly encourage contributions that bear on vertical mixing in the ocean. We also welcome theoretical and modeling contributions that address the role of ocean circulation on biogeochemistry\, or that help to interpret geochemical observations.Keynote speaker: TBA \n*11a. Biogeochemical cycling of aerosols and their effects in the evolving Earth’s climate(co-hosted by Themes 11 and 10)Co-conveners: Nicholas Meskhidze (North Carolina State University) – Ina Tegen (Institute for Tropospheric Research\, Leipzig\, Germany)Climate projections remain an important scientific goal for the earth science community. A large fraction of the uncertainty in predicting climate change lies in the uncertainties associated with feedbacks in the carbon cycle and aerosol forcing. These feedbacks are the result of land-atmosphere-ocean natural and anthropogenic interactions. Understanding those interactions is of great importance for characterizing possible future changes in the evolving Earth. While aerosols are a source of micronutrients (iron\, phosphorus\, nitrogen) for the ecosystems\, the emission and transformation processes of many aerosols (e.g. desert dust or secondary organic aerosols of biogenic sources) can themselves be influenced by biogeochemical processes. We invite submissions on lab/field measurements\, remote sensing\, and modeling that lead to process-level understanding of biogeochemical land-atmosphere-ocean interactions. Interdisciplinary research on deposition of dust and volcanic particles\, heterogeneous chemical/photochemical transformation of aerosols\, and in-situ studies for the effects of aerosols on ocean/terrestrial biogeochemistry are welcome. The earth system models with aerosol deposition coupled to the land-ocean biogeochemistry are in their infancy. Until such models can reliably reproduce the effect of aerosol deposition on carbon cycle\, it will be problematic to estimate how changes in aerosol deposition over time might have affected the evolving climate of the Earth. \n*12b. Pa and Th distributions in the ocean: controlling mechanisms(co-hosted by Themes 12 and 13)Co-convenors: Abel Guihou (SUNY-Stony Brook) – Robert F Anderson (LDEO of Columbia University)231Pa and long-lived Th isotopes are naturally occurring radionuclides. Their potential to provide quantitative information of modern and past oceanographic processes (such as large scale ocean circulation and particle fluxes and dissolution) has been acknowledged for decades. However\, some uncertainties still remain regarding what actually controls their distribution in the ocean. This session invites contributions aimed to better understand these mechanisms such has new dissolved and particulate water column profiles\, new views on the distribution of these radionuclides onto particles from natural samples or from laboratory experiments as well as modeling studies.Keynote speaker: Michiel Rutgers van der Loeff (Alfred Wegener Institute for Polar and Marine Research) \n*12e. Present and past biogeochemical cycling of nutrients and metals in high latitude marine environments(co-hosted by Themes 12 and 16)Co-convenors: Dr. Laura Wehrmann (University of California Riverside\, USA) – Dr. Christian März (Newcastle University\, UK) This session targets the emerging field of biogeochemical research in Arctic and Antarctic environments\, with a focus on understanding the role of the high latitudes for global element cycles (C\, N\, P\, S\, Si\, transition metals) at present and in the past. We welcome contributions elucidating the cycling of these elements in the water column\, at the ice-sediment and sediment-water interface\, in shallow as well as in deeply buried marine sediments of high latitude environments. This session aims to gather scientists studying Arctic and Antarctic fjords\, estuaries and river mouths\, glacial and pro-glacial environments\, as well as associated continental shelves\, slopes\, and the deep oceans. Topics of particular interest include\, but are not limited to the (coupled) cycling of carbon\, sulphur\, phosphorus\, iron and manganese in Arctic and Antarctic sediments; the overprint of paleoclimate proxies by biogeochemical processes; the role of microbial processes in shaping the diagenetic characteristics of high latitude environments; biogeochemical interactions between glaciers and the coastal ocean; the role of high latitude environments for global biogeochemical cycles in the past. We especially encourage contributions that apply multidisciplinary approaches\, novel analytical techniques\, and computer modelling to natural samples and/or in laboratory experiments.Keynote speaker: Prof. Rob Raiswell (Emeritus)\, School of Earth and Environment\, University of Leeds\, UK \n*12g. Contribution of submarine groundwater discharge to oceanic chemical cycles(co-hosted by Themes 12 and 22)Co-convenors: Aaron Beck (Virginia Institute of Marine Science) – Richard Peterson (Coastal Carolina University)Submarine groundwater discharge (SGD) comprises all water transported by advection across the permeable sediment-water interface\, including both fresh groundwater and recirculated seawater. Biogeochemical reactions such as ion exchange\, dissolution and precipitation\, and metal redox cycling occur in the subsurface mixing zone of fresh and saline groundwaters (the “subterranean estuary”)\, resulting in brackish SGD that can be very different in composition from either of the original end-members. Further\, the advection of groundwater through the diagenetic zone can mobilize regenerated nutrients\, and serve as a transport pathway of these recycled nutrients back to the water column. A growing body of work demonstrates the importance of SGD and subterranean estuaries to marine budgets of nutrients\, radionuclides\, and trace elements. Understanding current SGD-driven chemical fluxes is critical for predicting how future changes in the hydrologic cycle\, coastal margins\, and anthropogenic factors may affect chemical cycling in the ocean. This session will explore the role of SGD and the subterranean estuary in controlling chemical fluxes between land and sea. We especially encourage studies that assess the ecological impact of these fluxes\, which is yet relatively unrepresented in this field. \n*13b. Geochemical proxies for past ocean circulationCo-convenors: Anton Eisenhauer (IFM-GEOMAR/Kiel) – Steven L. Goldstein (Lamont-Doherty Earth Observatory) – Ralph Schneider (Universität Kiel) The ocean circulation is an important aspect for the marine trace metal and nutrient cycling for the Present and in the Past. In particular\, ocean circulation interferes with the global carbon cycle influencing atmospheric pCO2 as well as long and short term climate change. In order to better understand present and past biogeochemical cycles it is most important to document and understand ocean dynamics on all time scales. Past changes in ocean circulation can only be reconstructed from geological archives\, among others\, through the application and interpretation of geochemical proxies. This session invites contributions addressing new developments and findings\, both experimental and theoretical\, on the application of geochemical proxies\, trace elements and isotopes to reconstruct past ocean dynamics.Keynote speaker: Gerald H. Haug (ETH Zürich)  \n*13d. GEOTRACES\, the international science programCo-convenors: Géraldine Sarthou (Université de Brest) – Kazuyo Tachikawa (CEREGE\, France) – Tina van De Flierdt (Imperial College\, London)Many trace elements are critical for marine life\, and affect the functioning of ocean ecosystems. On the other hand\, some trace elements and isotopes are used to track modern ocean processes\, and if they are recorded faithfully in marine archives\, they are powerful indicators of past changes. International science program GEOTRACES aims at identifying processes\, quantifying fluxes and establishing the sensitivity of the distribution of key trace elements and isotopes. We invite contributions that focus on fluxes and processes at ocean interfaces\, internal cycle of the trace elements and isotopes\, and development of proxies for past changes\, based on experimental and/or modelling approaches. Results from the recent GEOTRACES cruise are particularly welcome. \n*17e.The application of synchrotron X-ray techniques to study marine biogeochemical cyclesCo-convenors: Phoebe J. Lam (Woods Hole Oceanographic Institution) – Brandy M. Toner ( University of Minnesota – Twin Cities) – Benjamin S. Twining (Bigelow Laboratory for Ocean Sciences)Synchrotron X-ray techniques in the soft\, “tender”\, and hard x-ray energy ranges are increasingly applied to address questions in marine science. Applications have included two- and three-dimensional element-specific imaging at nanometer to micron scales to determine cell quotas and elemental distributions and function\, and spectroscopic analyses to determine the speciation\, provenance\, and bioavailability of key nutrients such as phosphorus and iron. We invite abstracts from researchers who are already applying synchrotron techniques to marine problems\, as well as those whose work in other areas of Earth science might be applicable to topics in marine biogeochemical cycling. For example\, poorly understood processes such as scavenging of trace metals in the ocean might be informed by studies of complexation of surface-adsorbed species onto model minerals and microorganisms. Similarly\, mechanisms of elemental substitution in inorganic and biominerals may change the stability and thus biogeochemical role of these minerals in the oceans. We envision a session enabling cross-fertilization of ideas between laboratory and field researchers\, and biologists and geochemists.Keynote speaker: Jay Brandes (Skidaway Institute of Oceanography) \n 
URL:https://www.geotraces.org/event/goldschmidt-2012/
CATEGORIES:GEOTRACES Relevant Special Sessions
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