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DTSTART;TZID=Europe/Paris:20230709T000000
DTEND;TZID=Europe/Paris:20230714T235959
DTSTAMP:20260502T230349
CREATED:20221213T153254Z
LAST-MODIFIED:20230605T092410Z
UID:39294-1688860800-1689379199@www.geotraces.org
SUMMARY:Goldschmidt 2023
DESCRIPTION:There is a very interesting programme at Goldschmidt 2023 (9-14 July 2023\, Lyon\, France and online)! \n\n\n\nA list of GEOTRACES and GEOTRACES-related sessions is below (scroll down to read the session descriptions). \n\n\n\nThe deadline for abstract submission is March\, 1st 2023. \n\n\n\nList of GEOTRACES or GEOTRACES-related sessions:\n\n\n\n\n\n\n\nTheme 13\, Chemistry and physical processes of the oceans and atmosphere: now and through time:\n\n\n\n13c – Marine trace element cycling from the estuaries to the open ocean (GEOTRACES) \n\n\n\n13h – Emerging insights into processes controlling elemental and non-traditional stable isotope paleoproxies in past and present oceans \n\n\n\n13d – Hydrothermal vents from discharge to biogeochemical impacts \n\n\n\n\n\n\n\nTheme 14\, Science and Society:\n\n\n\nIn order to support broad participation\, all abstracts submitted to this theme are free of charge\, and can be in addition to another abstract from the same presenting author in another theme. \n\n\n\n14a – Use of GEOTRACES data to understand biogeochemical processes in the oceans \n\n\n\n14d – Lessons learned in communicating geochemistry to non-scientific audiences \n\n\n\n14c – Geoscientists’ Little Helpers – small software tools with big impact \n\n\n\n14e – Initiatives to advance diversity\, equity\, and inclusion in geochemistry \n\n\n\n14b – Engaging with a variety of communities: a workshop-style session to discuss issues\, ideas\, and practical solutions for more effective outreach \n\n\n\n14f – History of Geochemistry \n\n\n\n\n\n\n\nSession Descriptions:\n\n\n\n13c – Marine trace element cycling from the estuaries to the open ocean (GEOTRACES)Kai Deng\, ETH ZürichHelene Planquette\, Univ Brest\, CNRS\, IRD\, Ifremer\, LEMARAnh Le-Duy Pham\, University of California\, Los AngelesJennifer L Middleton\, Columbia UniversityPierre Damien\, University of California Los AngelesMarion Anne Fourquez\, Mediterranean Institue of OceanographyTrace elements and their isotopes in the ocean play essential roles as regulators of ocean carbon production and marine biodiversity\, as well as tracers of circulation and particle transport. This session highlights three areas of recent research that need critical attention. (1) Observational\, experimental and modelling contributions on the distribution\, flux and controls of particle-reactive elements from estuaries to open ocean. These particle-reactive elements such as rare earth elements\, Th\, Pa\, Pb\, Po\, Be\, involve processes and fluxes that are relevant in both the modern and paleo-ocean. (2) The impact of small-scale physical processes\, including submesoscale (<10 km) and mesoscale (<100 km) circulation\, turbulent mixing\, and sea-ice transport and melting on bioactive trace metals (Fe\, Mn\, Co\, Ni\, Cu\, etc.). Observational datasets on trace metals relevant to these processes are rapidly accumulating and state-of-the-art ocean modelling can use these as targets or predict distributions in areas with sparse data coverage. (3) The Southern Ocean as a whole\, and the Indian Ocean sector in particular remains poorly observed for trace elements and isotopes. Presentations are welcome on the recent SWINGS (Southwest Indian GEOTRACES Section\, Jan-Mar 2021) cruise as well as other Southern Ocean or GEOTRACES expeditions that investigate all aspects of marine trace element cycling including biogenic uptake\, remineralization\, particle fate\, export\, and circulation transport. Submission relating to all three of these areas are encouraged\, and especially by early career scientists. \n\n\n\n13h – Emerging insights into processes controlling elemental and non-traditional stable isotope paleoproxies in past and present oceansDavid J Janssen\, EawagAdina Paytan\, University of California\, Santa CruzSusan H Little\, University College LondonJiawang Wu\, Sun Yat-Sen UniversityGert J. De Lange\, Geosciences UtrechtRuifang Xie\, Shanghai Jiao Tong University \n\n\n\nTrace elements and their stable isotopes can serve as powerful proxies for understanding the biogeochemical history of the Earth\, as indicated by the biogeochemical regulations on their distribution in the modern ocean. Combinations of concentration and stable isotope data are providing new insights into their cycling\, sources and sinks. Recent results from these proxies have demonstrated their potential to build mechanistic understandings of the processes driving local and global paleoenvironmental conditions. Advancements in analytical capabilities and coordinated programs such as GEOTRACES and the Sedimentary Geochemistry and Paleoenvironments Project\, building global datasets from modern and paleo settings\, are greatly expanding proxy potentials. These advances allow for refinement of paleoproxy applications\, and the opportunity to reassess and improve some of the assumptions and uncertainties still existing.This session aims to connect modern\, paleo and methodological development communities to better integrate understandings of the present-ocean into paleoproxy applications\, and to identify key uncertainties where further research is needed. We welcome contributions improving the understanding of the biogeochemical controls on stable isotope distributions including data from modern settings\, from global modelling studies\, from culture or leaching experiments\, from studies on preservation and isolation of signals in sedimentary archives\, and from novel multi-proxy approaches. We also recognize that the field of non-traditional stable isotope geochemistry requires expensive infrastructure and time-consuming analyses\, facts that currently limit the diversity of scientists within it and thus the discipline as a whole. We welcome studies demonstrating good practice to increase accessibility\, diversity\, equity\, and inclusion of the field. \n\n\n\n13d – Hydrothermal vents from discharge to biogeochemical impactsZvi Steiner\, GEOMAR Helmholtz Centre for Ocean Research KielAnna Lichtschlag\, National Oceanography CentreDavid González-Santana\, Universidad de Las Palmas de Gran Canaria (ULPGC)Ziming Yang\, Oakland UniversityNatascha Riedinger\, Oklahoma State UniversitySeafloor hydrothermal systems and submarine volcanoes are crucial for the marine environment as they return buried substances\, including metals and dissolved gases\, from the Earth’s interior to the ocean and thus\, over geologic times\, control the composition of seawater and provide essential elements to the biosphere. Process understanding of the fate of hydrothermal products and discharges\, including complexation and scavenging by hydrothermal particles can be used as tool for answering questions around the controls of hydrothermal systems\, their evolution and activity over time and their potential impact on ocean productivity. This session will explore the fate of hydrothermal products and discharges proximal and distal to hydrothermal sources\, the diagenetic and microbial processes they undergo after deposition\, and their impact on the marine environment. We invite observational\, experimental and modelling contributions\, new approaches and new methodologies for shallow and deep hydrothermal systems from present and past times. We encourage submissions that will give new insights into the evolution of a hydrothermal system\, organic-mineral interactions\, spatial distribution and fluxes of products and discharges and the diagenetic alteration of hydrothermal products. Finally\, there are many parallels between the impacts of marine vulcanism and ocean acidification which we encourage submitters to consider. \n\n\n\n14a – Use of GEOTRACES data to understand biogeochemical processes in the oceansWilliam M. Landing\, Florida State UniversityAngela Milne\, University of Plymouth \n\n\n\nWe invite poster submissions demonstrating how trace element and isotope data\, together with nutrient\, oxygen\, hydrographic and BioGEOTRACES data from the GEOTRACES Intermediate Data Product (IDP2021) are being used to understand the biogeochemistry of the oceans. You might have used GEOTRACES data to quantify or constrain the input\, internal cycling\, and removal processes that ultimately control the global distributions of trace elements and isotopes (TEIs)\, especially those that are involved in biological cycling processes. You might have used GEOTRACES data in your teaching or outreach efforts\, and we definitely solicit reports from those activities. We imagine a collegial and convivial session where we can enjoy learning more about the various ways GEOTRACES data are being utilized. \n\n\n\n14d – Lessons learned in communicating geochemistry to non-scientific audiencesElena Masferrer Dodas\, GEOTRACES International Project OfficeChrissy Wiederwohl\, Texas A&M UniversityWe invite submission of experiences and materials for engaging with and communicating geochemistry to non-scientific audiences: general public\, schools\, the media\, policymakers\, and other stakeholders. Geochemists and scientists in general\, are very often faced to the challenge of communicating and sharing their knowledge to different audiences in a way that it is understandable to them.This session has the double purpose of showcasing examples which could serve as source of inspiration and at the same time highlight effective strategies that geochemists could follow to successfully engage with a non-scientific audience. \n\n\n\n14c – Geoscientists’ Little Helpers – small software tools with big impactJie Xu\, Institut für Geowissenschaften\, Goethe Universität FrankfurtThomas Rose\, Goethe Universität Frankfurt and Leibniz-Forschungsmuseum für Georessourcen/Deutsches Bergbau-Museum BochumJesse B. Walters\, Institut für Geowissenschaften\, Goethe UniversitätMiguel Bernecker\, Goethe University FrankfurtWorking with data over the years results almost inevitably in self-made code snippets\, scripts or spreadsheets\, and sometimes even full-fledged programmes that optimise workflows\, reduce workload and significantly speed up daily tasks. Some of them make it to the public but most remain invisible\, hidden behind the outcomes of the research they are helping with. However\, many of them are not shy but did not have the possibility to shine\, yet. We provide a spotlight for them\, so that the scientific community may benefit. We welcome presentations about all kinds of self-made software that facilitate our research. The presented tools can be written in any programming language and be in any stage of their development. We aim to raise awareness of what is already out there\, to facilitate sharing of the tools and to foster collaborations for their development. \n\n\n\n14b – Engaging with a variety of communities: a workshop-style session to discuss issues\, ideas\, and practical solutions for more effective outreachGeorgia G Soares\, Penn State UniversityBonnie Teece\, University of New South WalesIndrani Mukherjee\, University of New South WalesErica V. Barlow (she/her)\, Pennsylvania State UniversityThere are significant barriers to the implementation and progression of education and outreach activities\, particularly in the practical aspects of how to begin creating a diverse network and in co-creating and designing the activities. These barriers are especially apparent\, for example\, where fieldwork and research are performed and for early career researchers (ECRs) setting up new connections. This workshop-style session has two parts. The first part will bring together expertise from across the world to explore practical (rather than theoretical) ways of executing meaningful and impactful activities. Several experts (or “big issue” guides) will facilitate interactive discussions surrounding outreach with a variety of different communities. Topics of discussion may include co-creating decolonised outreach activities\, engaging with indigenous communities\, creating activities that capture students and/or communities from low SES backgrounds\, disability-inclusive outreach and education\, and using newer\, less traditional mediums (podcasts\, film\, social media\, etc.). Experts will lead smaller group discussions during this interactive workshop-style session and share how they engage with communities\, including lessons learned\, and encourage participants to share their experiences during outreach. At the end of this part of the session we will come together\, and each facilitator will share the ideas and practical solutions discussed in their groups. The second part is a poster session where submitters can highlight their own efforts relating to outreach people are attempting to start\, are currently engaged in\, and/or are trying to progress. Poster submissions will also shape the specific topics and issues that experts will discuss during this workshop-style session. \n\n\n\n14e – Initiatives to advance diversity\, equity\, and inclusion in geochemistrySusan H Little\, University College LondonJennifer L Middleton\, Columbia UniversityLAlastair J M Lough\, University of LeedsPallavi Anand\, The Open UniversityGeochemistry is a uniquely varied discipline\, spanning Chemistry\, Earth\, Planetary and Environmental Sciences. However\, this disciplinary diversity comes with unique challenges to fostering a diverse and inclusive community\, partly linked to inequitable access to resources and the combination of lab-\, field- and office-based approaches that geochemical research requires. In this session\, we invite presentations that assess the obstacles that contribute to the under-representation of marginalized groups within geochemistry and that suggest best practices and innovative ideas to remove those obstacles. Topics may include\, but are not limited to: data relating to professional representation (e.g.\, in awards\, medals\, grants\, graduate programs\, high-level positions\, invited talks\, papers\, journal editorships); evidence of barriers to inclusion\, personal\, institutional\, or cultural; and novel strategies and best practices to identify and overcome these barriers (e.g.\, mentoring\, networks\, funding\, institutional initiatives\, national or international policies or schemes). Abstracts to this session will be free of charge and will not prevent the submission of an abstract to another theme as presenting author. \n\n\n\n14f – History of GeochemistryJérôme Gaillardet\, IPGPWilliam M. White\, Cornell UniversityGeochemistry was not born yesterday. For example\, the multiplication of advanced analytical tools that make our daily work so fascinating in 2022 result from centuries of incremental or transformative technological innovations\, as well as from a succession of conceptual advances in the fields of physics\, chemistry\, Mathematics and Ecology. Those roots tend to be forgotten\, and this is detrimental to the quality of our science\, and our understanding of it. This session aims to explore the historical roots of geochemistry along two main directions. First\, a direction where geochemistry is conceived as a practical science based on advanced analytics\, which are only the outcome of centuries of creative technological inventions\, developments and measurements. Secondly\, geochemistry as a conceptual framework inheriting centuries of advances in the understanding of the structure and properties of matter\, light\, and other critical concepts of the geological sciences in general. All contributors who want to share with us their insights on the historical roots of our science and their pedagogical implications are welcome. A priority\, if needed\, will be given to early career scientists without discrimination for institution\, race\, etc.
URL:https://www.geotraces.org/event/39294/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20230709T000000
DTEND;TZID=Europe/Paris:20230709T235959
DTSTAMP:20260502T230349
CREATED:20230216T105327Z
LAST-MODIFIED:20230517T203601Z
UID:47624-1688860800-1688947199@www.geotraces.org
SUMMARY:What can marine authigenic Nd isotopes be reliably used for? / 1-day Hybrid Workshop
DESCRIPTION:Full day hybrid pre-conference workshop we are organizing on Sunday 9th July: What can marine authigenic Nd isotopes be reliably used for? \n\n\n\nWe aim to answer this question and identify knowledge gaps to be addressed by the community through structured discussions. We plan to focus these discussions with a small number of short talks (10 min) by early career researchers around the themes: 1) Assessingauthigenic signals\, 2) The sediment (pore) water interface\, 3) Modern seawater & particulate Nd isotopes in different marginal marine settings\, and 4) Modelling & global Nd fluxes. \n\n\n\nThe full day workshop will start with a perspective talk and end with a whiteboard session. We also plan to initiate a data compilation product at the workshop. Early career researchers will present their work related to these themes in short talks. \n\n\n\nPlease note that workshop attendance at the venue will cost 75 euros (lunch and coffee break included) and hybrid attendance will cost 60 euros. Registration to the conference is not required to sign up for the pre-conference workshops. Participants will see this option on the registration form. \n\n\n\nWe look forward to meeting you in person or online in July. Questions\, comments\, and suggestions are welcome! And please forward this to anyone who could be interested. \n\n\n\nChandranath Basak \n\n\n\nEd Hathorne (ehathorne@geomar.de) \n\n\n\nJianghui Du \n\n\n\nPatrick Blaser \n\n\n\nSophie Paul
URL:https://www.geotraces.org/event/what-can-marine-authigenic-nd-isotopes-be-reliably-used-for-1-day-hybrid-workshop/
CATEGORIES:GEOTRACES Relevant Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20230615T000000
DTEND;TZID=Europe/Paris:20230616T235959
DTSTAMP:20260502T230349
CREATED:20230216T095222Z
LAST-MODIFIED:20230216T103039Z
UID:47616-1686787200-1686959999@www.geotraces.org
SUMMARY:Hybrid MarChemSpec Tutorial at OCB2023
DESCRIPTION:Calculating chemical speciation\, including the carbonate system and trace metal complexation\, in natural waters of varying composition. \n\n\n\nIn conjunction with OCB2023\, we will convene a hands-on tutorial for a new marine chemical speciation model MarChemSpec (Clegg et al.\, 2022a\,b; Humphreys et al.\, 2022; OCB science feature) on June 15-16 (WHOI/hybrid). This model\, which determines species concentrations from thermodynamic equilibrium constants and activity coefficients calculated using the Pitzer equations\, can estimate: \n\n\n\n*Acid-base speciation and pH (with uncertainties) in seawaters of all salinities\, and in natural waters whose compositions differ from seawater stoichiometry \n\n\n\n*Complexation of core GEOTRACES species (Fe\, Zn\, Cd\, Cu\, Al\, Mn\, Pb)\, plus Co and Ni\, by inorganic anions \n\n\n\nThe model will be made freely available in the first half of 2023 as standalone executable programs\, and also for Matlab\, Python\, and R. This tutorial will briefly chronicle the development and evolution of the model\, highlight its scientific applications\, and show how to use the modeling tools using practical examples. Note that participation in the tutorial will require a small amount of advance work to prepare (involving downloads and a short exercise). \n\n\n\nPlease indicate your interest in the tutorial (we will try to convene it in a hybrid format to enable virtual participation) by filling out this form. If you have Matlab\, Python\, and/or R skills and experience and can work both Mac and/or Windows platforms\, we would appreciate having a small number of assistants to help us run the tutorial. We will provide a small honorarium for those who can help! Please indicate your interest in helping in this capacity on the form. \n\n\n\nFor further information contact hbenway@whoi.edu or s.clegg@uea.ac.uk. \n\n\n\nS. L. Clegg\, J. F. Waters\, D. R. Turner\, and A. G. Dickson (2022) Chemical speciation models based upon the Pitzer activity coefficient equations\, including the propagation of uncertainties. III. Seawater from the freezing point to 45 oC\, Including acid-base equilibria. In press\, Mar. Chem. \n\n\n\nS. L. Clegg\, M. P. Humphreys\, J. F. Waters\, D. R. Turner\, and A. G. Dickson (2022) Chemical speciation models based upon the Pitzer activity coefficient equations\, including the propagation of uncertainties. II. Tris buffers in artificial seawater at 25 oC\, and an assessment of the seawater ‘Total’ pH scale. Mar. Chem. 244\, art. no. 104096\, https://doi.org/10.1016/j.marchem.2022.104096. \n\n\n\nM. P. Humphreys\, J. F. Waters\, D. R. Turner\, A. G. Dickson\, and S. L. Clegg (2022) Chemical speciation models based upon the Pitzer activity coefficient equations\, including the propagation of uncertainties: Artificial seawater from 0 to 45 oC. Mar. Chem. 244\, art. no. 104095\, https://doi.org/10.1016/j.marchem.2022.104095.
URL:https://www.geotraces.org/event/hybrid-marchemspec-tutorial-at-ocb2023/
CATEGORIES:GEOTRACES Relevant Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20230612T000000
DTEND;TZID=Europe/Paris:20230616T235959
DTSTAMP:20260502T230349
CREATED:20230216T081804Z
LAST-MODIFIED:20230412T090523Z
UID:47608-1686528000-1686959999@www.geotraces.org
SUMMARY:OCB2023 Summer Workshop
DESCRIPTION:The Ocean Carbon and Biogeochemistry 2023 Summer Workshop (OCB2023) will take place June 12-15\, 2023 in Woods Hole\, MA. The registration is now open. \n\n\n\nOCB2023 sessions will include: \n\n\n\n–Marginal sea carbon cycle in the Anthropocene (Chairs: Xinping Hu\, Emily Osborne\, Matheus Fagundes) \n\n\n\n–Role of deltaic sediments in regulating biogeochemical cycles (Chair: Shaily Rahman) \n\n\n\n–Marine carbon dioxide removal (mCDR) panel discussion with industry and policy panelists (Chairs: Patrick Rafter\, Jaime Palter\, Tim DeVries\, Nicola Wiseman) \n\n\n\n–Marine biodiversity and ecosystem resilience (Chairs: Susanne Menden-Deuer\, Victoria Coles\, Dreux Chappell\, Tricia Thibodeau) \n\n\n\n–Sustained observations of global ocean biology (Chairs: Adam Martiny\, Luke Thompson\, Alyse Larkin\, Zachary Erickson\, Susanne Craig) \n\n\n\nIn addition it will include the following hands-on hybrid tutorial:Hybrid MarChemSpec Tutorial at OCB2023 \n\n\n\nCalculating chemical speciation\, including the carbonate system and trace metal complexation\, in natural waters of varying composition \n\n\n\nIn conjunction with OCB2023\, we will convene a hands-on tutorial for a new marine chemical speciation model MarChemSpec (Clegg et al.\, 2022a\,b; Humphreys et al.\, 2022; OCB science feature) on June 15-16 (WHOI/hybrid). This model\, which determines species concentrations from thermodynamic equilibrium constants and activity coefficients calculated using the Pitzer equations\, can estimate: \n\n\n\n-Acid-base speciation and pH (with uncertainties) in seawaters of all salinities\, and in natural waters whose compositions differ from seawater stoichiometry  \n\n\n\n-Complexation of core GEOTRACES species (Fe\, Zn\, Cd\, Cu\, Al\, Mn\, Pb)\, plus Co and Ni\, by inorganic anions \n\n\n\nThe model will be made freely available in the first half of 2023 as standalone executable programs\, and also for Matlab\, Python\, and R. This tutorial will briefly chronicle the development and evolution of the model\, highlight its scientific applications\, and show how to use the modeling tools using practical examples. Note that participation in the tutorial will require a small amount of advance work to prepare (involving downloads and a short exercise). \n\n\n\nPlease indicate your interest in the tutorial (we will try to convene it in a hybrid format to enable virtual participation) by filling out this form. If you have Matlab\, Python\, and/or R skills and experience and can work both Mac and/or Windows platforms\, we would appreciate having a small number of assistants to help us run the tutorial. We will provide a small honorarium for those who can help! Please indicate your interest in helping in this capacity on the form. \n\n\n\nFor further information contact hbenway@whoi.edu or s.clegg@uea.ac.uk. \n\n\n\nS. L. Clegg\, J. F. Waters\, D. R. Turner\, and A. G. Dickson (2022) Chemical speciation models based upon the Pitzer activity coefficient equations\, including the propagation of uncertainties. III. Seawater from the freezing point to 45 oC\, Including acid-base equilibria. In press\, Mar. Chem. \n\n\n\nS. L. Clegg\, M. P. Humphreys\, J. F. Waters\, D. R. Turner\, and A. G. Dickson (2022) Chemical speciation models based upon the Pitzer activity coefficient equations\, including the propagation of uncertainties. II. Tris buffers in artificial seawater at 25 oC\, and an assessment of the seawater ‘Total’ pH scale. Mar. Chem. 244\, art. no. 104096\, https://doi.org/10.1016/j.marchem.2022.104096. \n\n\n\nM. P. Humphreys\, J. F. Waters\, D. R. Turner\, A. G. Dickson\, and S. L. Clegg (2022) Chemical speciation models based upon the Pitzer activity coefficient equations\, including the propagation of uncertainties: Artificial seawater from 0 to 45 oC. Mar. Chem. 244\, art. no. 104095\, https://doi.org/10.1016/j.marchem.2022.104095.
URL:https://www.geotraces.org/event/ocb2023-summer-workshop/
CATEGORIES:GEOTRACES Relevant Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20230604T000000
DTEND;TZID=Europe/Paris:20230609T235959
DTSTAMP:20260502T230349
CREATED:20221202T090156Z
LAST-MODIFIED:20230524T144905Z
UID:39241-1685836800-1686355199@www.geotraces.org
SUMMARY:ASLO 2023\, Aquatic Science Meeting
DESCRIPTION:Palma de Mallorca\, Spain \n\n\n\nResilience and Recovery in Aquatic Systems\n\n\n\nConcepts of resilience and recovery do not only apply to aquatic ecosystems but also to societies when faced with disruptions and crises. Past events have shown that adaptability and decisiveness are important keys to resilience and recovery. Disruptions are opportune moments for setting up strategies for management and recovery. Faced with the COVID-19 pandemic\, ASLO meetings have adapted by transforming the ASM 2021 Palma meeting to virtual with a positive attitude that in 2023 we will recover and meet in-person. \n\n\n\nWe will incorporate the theme of resilience and recovery in aquatic systems into the plenary sessions and encourage submissions that examine these topics and invite you to contribute special sessions on topics relevant to freshwater and marine ecosystems.   \n\n\n\nFor further information: https://www.aslo.org/palma-2023/ \n\n\n\nGEOTRACES and GEOTRACES-related sessions:\n\n\n\n**SS014 Atmospheric Supply of Soluble Trace Elements and Isotopes: Advances and Challenges\n\n\n\nRachel Shelley\, University of East Anglia (rachel.shelley@uea.ac.uk)Susanne Fietz\, University of Stellenbosch (sfietz@sun.ac.za)Alex Baker\, University of East Anglia (alex.baker@uea.ac.uk)Morgane Perron\, CNRS – Laboratoire des sciences de l’Environnement MARin (LEMAR) (morgane.perron@utas.edu.au) \n\n\n\nApproximately 50% of primary production occurs in the oceans. Iron (Fe)\, and other trace elements (TEs)\, are essential micronutrients as primary producers require Fe for carbon (C)\, nitrogen (N) and phosphorus (P) acquisition. However\, in vast areas of the ocean\, marine production is limited by insufficient Fe availability or by the scarcity of a combination of two or more micronutrient TEs. Therefore\, the availability of TEs\, particularly Fe\, exerts a fundamental control on marine biological activity\, from bacterial and primary productivity of phytoplankton through to the fisheries which ultimately depend on them. Micronutrient TEs thereby support marine ecosystem services and CO 2 sequestration in most ocean basins and over various timescales. Atmospheric deposition provides an external source of TEs to the surface ocean. Large deposition events can relieve micronutrient (co-)limitation through the partial dissolution of TEs from aerosols. However\, large deposition events are sporadic and currently poorly understood. This presents a challenge for predicting how ocean ecosystems will respond to changes in soluble TE fluxes in the future. Therefore\, it is vital that models are able to represent and reproduce current and past TE distributions in the ocean in order to improve predictive capabilities. A further challenge is understanding how the different chemical compositions and atmospheric processing of natural and anthropogenic particles impacts TE solubility following deposition to seawater and\, thus\, the ability of biota to assimilate the TEs. Although mineral dust is proportionally the largest source of aerosol TEs to the global ocean\, anthropogenic and wildfire aerosols have a greater ability to dissolve in seawater. This results in the liberation of a larger fraction of bioaccessible TEs\, due to several factors. Following aerosol deposition\, new resource competition among primary producers can alter community structure and dynamics\, which influences the capacity of the ocean to sequester CO 2 \, fix nitrogen and produce biological gases which readily form cloud condensation nuclei. All three features exert crucial climate feedbacks. The degree to which autotrophs or heterotrophs are stimulated or suppressed by atmospheric deposition depends on the physicochemical form in which atmospheric TEs are delivered to seawater and on the initial nutrient status of the water. Again\, highlighting the need for a more integrated understanding of biogeochemical cycling including the atmospheric component. In this session\, we would like to invite submissions from novel experimental and modelling work on TE biogeochemistry at the air-sea interface. Presentations addressing key research questions including the controls on dissolution and/or uptake of aerosol TEs\, as well as modelling estimates of aerosol TE deposition fluxes in the present\, past\, or future are welcomed. Studies focusing on the Southern Hemisphere and other historically under-studied oceanic regions are particularly encouraged. This session has broad applicability to different research communities\, e.g.\, climate change\, human health\, fisheries\, and paleoclimate. As such\, we welcome cross-disciplinary submissions which address questions about the flux of TEs across the air-sea interface and the associated impact on marine ecosystems. \n\n\n\n**SSO38 Trace Metal and Macronutrient Behaviour in Large Rivers and Estuaries \n\n\n\nAdrienne Hollister\, Jacobs University Bremen (a.hollister@jacobs-university.de)Hannah Whitby\, University of Liverpool (hannah.whitby@liverpool.ac.uk)Rebecca Zitoun\, GEOMAR Helmholtz Centre for Oceanographic Research (rzitoun@geomar.de)Juan Santos-Echeandía\, Spanish Institute for Oceanography (juan.santos@ieo.csic.es) \n\n\n\nRivers are a major source of trace metals\, macronutrients and organic matter to the global oceans. Processes such as colloidal flocculation\, particle adsorption-desorption and biological activity influence the concentrations and speciation of trace metals and nutrients during estuarine mixing\, and therefore their overall behaviour and flux to the ocean. Major rivers such as the Amazon are becoming increasingly vulnerable to anthropogenic impacts\, including land use change\, hydroelectric dams\, metal pollution (e.g. from mining)\, plastic pollution (relevant as metal vectors)\, and agricultural runoff. These and other anthropogenic impacts to a river’s catchment area can lead to potentially toxic concentrations of metals (e.g. Cu\, Zn\, Pt\, Hg\, Pb\, Fe)\, or of macronutrients leading to eutrophication. In addition\, climate change is projected to cause both increased droughts and flooding\, resulting in changes in river flow and chemical output. These changes may have a drastic effect on trace metal and nutrient sources\, cycling\, transport\, fluxes\, reactivity and sinks at the land-ocean interface. As climate and land use changes amplify\, it is essential to establish a baseline for riverine trace metal and nutrient concentrations and fluxes to the ocean and sediments\, and to understand how these parameters may change with changing environmental conditions. Generally\, this session aims to evaluate the behaviour\, fluxes\, sources and sinks of trace elements and their isotopes (TEI) as well as macronutrients (N\, P\, Si) from major rivers to the ocean. Contributions focused on observational\, experimental\, and modelling approaches regarding metal- and nutrient cycling\, their chemical and biological transformation and distribution in rivers and estuaries are welcome. \n\n\n\nPosters\, presentations and hybrid presentations are welcome.  \n\n\n\n \n\n\n\nTown Hall\n\n\n\nSCOR Working Group 167\, RUSTED\, invites you to a Town Hall in the Sala Santa Catalina\, Palau de Congressos\, Palma de Mallorca at 13:30 on Wednesday 7 June 2023. \n\n\n\nConstraining the fluxes of micronutrient and pollutant trace elements (TEs) across the air-sea interface is a research priority of large international programmes such as SOLAS and GEOTRACES. RUSTED (Reducing Uncertainty in Soluble aerosol Trace Element Deposition) is the new SCOR Working Group 167. Our overarching objective is to assure the quality of TE solubility data produced from aerosol dissolution experiments and to improve the handling of such data in Earth System models. \n\n\n\nThe purpose of the Townhall is to: 1) introduce RUSTED to the Aquatic Sciences community\, 2) invite aerosol TE data contributions for inclusion in a new database and 3) assess research interests and understand barriers to participation in a workshop planned for 2025. \n\n\n\nBeyond improving understanding of air-sea biogeochemical exchanges\, RUSTED outcomes will be a valuable resource for other fields\, such as health and climate research. This Townhall will provide a unique opportunity to network with RUSTED members. \n\n\n\nFurther information about RUSTED is available here: https://www.geotraces.org/new-scor-working-group-rusted/
URL:https://www.geotraces.org/event/aslo-2023-aquatic-science-meeting/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20230515T000000
DTEND;TZID=Europe/Paris:20230519T235959
DTSTAMP:20260502T230349
CREATED:20221214T102732Z
LAST-MODIFIED:20230214T103238Z
UID:39326-1684108800-1684540799@www.geotraces.org
SUMMARY:AGU Chapman Conference
DESCRIPTION:There will be an AGU Chapman conference held in Cyprus\, May 15-19\, 2023 on the role of oceanic hydrothermal systems in ocean chemistry: \n\n\n\nAGU Chapman ConferenceHydrothermal Circulation and Seawater Chemistry: What’s the chicken and what’s the egg?Agros\, Cyprus | 15-19 May 2023Website: https://www.agu.org/Chapman-Hydrothermal-Circulation-Seawater-Chemistry \n\n\n\nSession topics include: \n\n\n\n– What processes and boundary conditions control high-temperature (on-axis) hydrothermal fluxes?– What processes and boundary conditions control low-temperature (off-axis) hydrothermal fluxes?– How do hydrothermal fluxes vary in space and time in the modern and recent ocean?– How did hydrothermal fluxes vary over the Phanerozoic under different boundary conditions?– What might control hydrothermal fluxes on habitable exoplanets and the early Earth? \n\n\n\nAbstracts on all aspects of the role of hydrothermal input into the ocean are welcome and the abstract submission deadline is 25th January 2023. Feel free to reach out to any of the conveners if you have questions about the meeting.
URL:https://www.geotraces.org/event/agu-chapman-conference/
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20230423T000000
DTEND;TZID=Europe/Paris:20230428T235959
DTSTAMP:20260502T230349
CREATED:20221115T102324Z
LAST-MODIFIED:20230330T143511Z
UID:34957-1682208000-1682726399@www.geotraces.org
SUMMARY:EGU General Assembly 2023
DESCRIPTION:The EGU General Assembly 2023 (23–28 April 2023\, Vienna\, Austria and online) brings together geoscientists from all over the world to one meeting covering all disciplines of the Earth\, planetary\, and space sciences. The EGU aims to provide a forum where scientists\, especially early career researchers\, can present their work and discuss their ideas with experts in all fields of geoscience. \n\n\n\n\n\n\n\n\n\n\n\nGEOTRACES session: \n\n\n\n\n\n\n\nOS3.1\, Response of ocean biogeochemical cycles to past\, present and future climate changeConvener: Alessandro Tagliabue | Co-conveners: Charlotte Laufkötter\, Christopher Somes\, Camille Richon \n\n\n\nhttps://meetingorganizer.copernicus.org/EGU23/session/45681 \n\n\n\nAbstract submissionClimate induced alterations to net primary production act alongside changes to biogeochemical cycling of oxygen and nutrients to affect marine ecosystem structure and function\, as well as the ocean carbon cycle on decadal to centennial timescales. Climate change is driving alterations to these key components of ocean health\, both via long term changes and the emergence of extremes. The 6th Climate Model Intercomparison Project provides new opportunities to analyze the long-term changes in biogeochemistry under different emissions scenarios\, as well as to explore the emergence and potential impacts of extremes. Additionally\, historical variability linked to climate oscillations such as ENSO and the Southern Annular Mode provide an opportunity to bring insights from observed changes and impacts. Moreover\, isotope systems and proxies are often used in paleoclimate and paleoceanography across geologic timescales of climate change to interpret past environmental changes in Earth’s history. Their interpretation relies heavily on these isotope systems’ budget in the ocean. \n\n\n\nThis session invites submissions\, from both observations and modelling efforts\, that address the impact of climate change operating over multiple timescales on net primary production\, biogeochemical cycling of nutrients and oxygen\, and the ocean carbon cycle\, including cascading effects for marine ecosystems to modulate biodiversity and ecosystem services.
URL:https://www.geotraces.org/event/egu-general-assembly-2023/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20230125T000000
DTEND;TZID=Europe/Paris:20230125T235959
DTSTAMP:20260502T230349
CREATED:20230118T090302Z
LAST-MODIFIED:20230118T091022Z
UID:43942-1674604800-1674691199@www.geotraces.org
SUMMARY:Webinar: Organizing Intercalibration Efforts for BioGeoSCAPES: A Panel Discussion
DESCRIPTION:January 25 (11a-1p ET) \n\n\n\nRegister \n\n\n\nProducing data that can be effectively compared across space and time is a critical aspect of developing a collaborative international microbial biogeochemistry program. Intercalibration activities involving validation of precision and accuracy and development of intercomparison standards are foundational to the production of interoperable data. With BioGeoSCAPES aiming to launch mid-decade\, further progress must be made to ensure high-quality data collection. This virtual panel will include perspectives from a variety of communities (nucleic acids\, metabolomics\, proteomics\, rates) and encourage brainstorming through small group discussions. This panel discussion initiates important discussions and community-building in preparation for an international BioGeoSCAPES science planning workshop in Woods Hole\, MA USA (tentatively scheduled for Fall 2023). \n\n\n\n\n\n\n\nSchedule \n\n\n\n11:00 EST – 11:45 Short 5 minute overview talks \n\n\n\n\nMaite Maldonado – Introduction and Webinar Goals  \n\n\n\nDaniel Petras and Jeffrey Hawkes – Metabolomics Intercalibration update \n\n\n\nAdrian Marchetti – US Nucleic Acids Intercalibration Workshop Results  \n\n\n\nMak Saito – Ocean Metaproteomics Intercomparison Update and Sampling Material  \n\n\n\nLuke Thompson\, Alyse Larkin and Harriet Alexander – BioGoSHIP Nucleic Acids Intercomparison\n\n\n\nDaniele Iudicone – Perspectives from AtlantEco/Tara \n\n\n\nJulie LaRoche – Rates Measurement Intercalibration \n\n\n\n\n11:45-12:15 Breakout Room Discussions \n\n\n\n12:15-12:30 Report back \n\n\n\n12:30-13:00 Open Plenary Discussion
URL:https://www.geotraces.org/event/webinar-organizing-intercalibration-efforts-for-biogeoscapes-a-panel-discussion/
CATEGORIES:GEOTRACES Relevant Workshop
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220928T000000
DTEND;TZID=Europe/Paris:20220930T235959
DTSTAMP:20260502T230349
CREATED:20220601T095804Z
LAST-MODIFIED:20220601T100047Z
UID:17425-1664323200-1664582399@www.geotraces.org
SUMMARY:GEOTRACES Scientific Steering Committee (SSC) Meeting
DESCRIPTION:Location: Southampton\, UK
URL:https://www.geotraces.org/event/geotraces-scientific-steering-committee-annual-meeting/
CATEGORIES:GEOTRACES Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220926T000000
DTEND;TZID=Europe/Paris:20220927T235959
DTSTAMP:20260502T230349
CREATED:20220601T100203Z
LAST-MODIFIED:20220601T100255Z
UID:17431-1664150400-1664323199@www.geotraces.org
SUMMARY:GEOTRACES Data Management Committee (DMC) Meeting
DESCRIPTION:Location: Southampton\, UK
URL:https://www.geotraces.org/event/geotraces-data-management-committee-dmc-meeting/
CATEGORIES:GEOTRACES Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220919T000000
DTEND;TZID=Europe/Paris:20220921T235959
DTSTAMP:20260502T230349
CREATED:20220609T091548Z
LAST-MODIFIED:20220720T075855Z
UID:17558-1663545600-1663804799@www.geotraces.org
SUMMARY:TRACESAMORS
DESCRIPTION:TRACESAMORS (TRACE metal SAMplers and sensORS) workshop will promote multidisciplinary and multi-institutional research to instigate a much needed step change in the monitoring of trace metal dynamics in the marine environment. \n\n\n\nIt will also enable the networking of knowledge on the methodologies currently used for in situ sampling and analysis of trace metals in different international laboratories. \n\n\n\nIt will take place in Plouzané at the Pole numérique Brest Iroise (PNBI) the 19th\, 20th and 21st of september 2022. \n\n\n\nInterested? \n\n\n\nThen register here: https://tracesamors.sciencesconf.org/ \n\n\n\nDeadline for submission: 7th July 2022
URL:https://www.geotraces.org/event/tracesamors/
CATEGORIES:GEOTRACES Relevant Workshop,Other Conferences of Interest
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220710T000000
DTEND;TZID=Europe/Paris:20220715T235959
DTSTAMP:20260502T230349
CREATED:20220105T103311Z
LAST-MODIFIED:20220405T134032Z
UID:14095-1657411200-1657929599@www.geotraces.org
SUMMARY:Goldschmidt 2022
DESCRIPTION:Goldschmidt is the foremost annual\, international conference on geochemistry and related subjects\, organized by the Geochemical Society and the European Association of Geochemistry. Given the exceptional circumstances due to the current Covid-19 pandemic\, the Goldschmidt2022 Conference will take place in Honolulu and also online. \n\n\n\nGEOTRACES and GEOTRACES-related sessions:\n\n\n\n12a – The interplay between terrigenous fluxes and the biological pump as reflected by trace elements and their isotopes in the oceans\n\n\n\nConveners:Adi TorfsteinHebrew University of Jerusalem \n\n\n\nZanna ChaseInstitute for Marine and Antarctic Studies \n\n\n\nThe importance of the oceanic biological pump as a modulator of atmospheric CO2 levels and global climate cannot be overstated\, yet\, some fundamental aspects of its dyanamics are still not well understood\, such as the quantitative and qualitative impacts of terrigenous inputs into the oceans. These include dust\, river outflow\, glacial meltwater\, submarine groundwater discharge (SGD)\, and other processes along the margins\, all of which impose strong controls over the efficiency of the biological pump. Constraining their rates\, sources\, sinks and role in biogeochemical cycles is critical for achieving a full understanding of the dynamics of the biological pump.Here we seek contributions that utilize trace elements and their isotopes to describe the following non-exclusive topics: 1) Quantification and characterization of terrigenous inputs (dust\, rivers\, SGDs\, etc.) into the oceans and their impact on the marine environemnt\, 2) Studies of temporal and spatial patterns of terrigenous fluxes and their interplay with marine productivity and export production\, 3) Macro and micro scale interactions between terrigenous material and organic carbon\, 4) New methodologies and approaches to studying the role of trace elements in the marine biological pump. \n\n\n\nThe submission of multidisciplinary studies is encouraged\, including applications of organic geochemistry\, radionuclides\, experimental and analytical isotope geochemistry\, modeling\, and trace element phase partitioning. In addition\, we welcome time series –based studies\, both in the modern oceans as well as paleo records. \n\n\n\n\n\n\n\n12d – The Role Of Trace Metal Speciation (Physical And Chemical) At Marine Geochemical Interfaces\n\n\n\nConveners: \n\n\n\nCatherine JeandelLEGOS (Université de Toulouse\, CNRS/CNES/IRD/UPS) \n\n\n\nRebecca ZitounGEOMAR Helmholtz Centre for Ocean Research Kiel \n\n\n\nHélène PlanquetteUniversity Brest\, CNRS\, IRS \n\n\n\nSylvia SanderGEOMAR Helmholtz Centre for Ocean Research Kiel \n\n\n\nWilliam M. LandingFlorida State University \n\n\n\nAndrea KoschinskyJacobs University Bremen \n\n\n\nTrace metals exhibit a wide range of chemical\, physical\, and biological reactivities (e.g. oxidation\, precipitation\, sorption\, complexation\, toxicity) depending on their chemical and physical speciation (e.g. ions\, ion pairs\, organic and inorganic complexes\, colloids\, suspended particles). Thus\, the speciation of metals is of great importance not only to substantiate the geochemical fate of trace metals in the world’s ocean but also to estimate their availability and toxicity to marine biota. Geochemical interfaces are of particular interest because they exert a great control on trace metal cycling\, fluxes\, and rates and a full understanding of trace metal speciation along these boundaries is necessary for a more holistic understanding of the fate of trace metals in the marine environment. However\, despite decades of marine trace metal research\, we are still lacking knowledge of the speciation along geochemical interfaces (i) in space and time; (ii) the underlying driving processes; and (iii) their role for the global marine biogeochemical element cycles. Geochemical interfaces include sediment-water and atmosphere-water boundaries as well as regions with physicochemical gradients of density\, redox conditions\, temperature\, pH\, or salinity\, such as hydrothermal systems\, ground water discharges\, deep sea environments\, estuaries\, and coastal embayments. \n\n\n\nThis session brings together transdisciplinary scientists\, exploring trace metal speciation at various marine geochemical interfaces. We encourage contributions relating to novel analytical tools\, modelling approaches\, and laboratory-based experiments. \n\n\n\n\n\n\n\n14b: “Transport of particle-reactive elements from estuaries to open ocean: role of boundary exchange and oceanic internal cycling”\n\n\n\nConvenors:Kai DengETH Zürich \n\n\n\nMilena HorvatJožef Stefan Institute \n\n\n\nJianghui (JD) DuETH Zürich \n\n\n\nIgor ŽivkovićInstitute Rudjer BoškovićJožef Stefan Institute \n\n\n\nJennifer L MiddletonColumbia University \n\n\n\nParticle-reactive metals such as rare earth elements (REE)\, thorium (Th)\, mercury (Hg) etc. and their isotopes are powerful tracers for investigating the ocean biogeochemical cycles and can be applied to track e.g. continental weathering input\, transport of water mass and particle flux\, and anthropogenic emissions. For their robust applications across space and time\, it is crucial to obtain a comprehensive understanding of the physical-chemical processes controlling the behaviors of individual particle-reactive elements; the emphasis is on exchange at ocean interfaces via e.g. rivers\, atmospheric fallout and benthic dynamics and on internal cycling via e.g. scavenging and remineralization. Such knowledge based on the modern ocean can: 1) help resolve the long-standing debate arising from conflicting records of multiple particle-reactive isotopic systems in the geological past; 2) predict how anthropogenic emission and climate change scenarios will affect the cycling of key trace metals (e.g. toxic monomethylmercury; MMHg) in marine ecosystems. \n\n\n\nThis session invites observational\, experimental and modelling contributions on the distribution\, speciation\, flux and controls of particle-reactive metals from estuaries to open ocean\, with a particular interest in the interaction between seawater/porewater (including colloids) and lithogenic/biogenic particles. Multi-disciplinary and multi-proxy studies and contributions on advances in geochemical proxy development and in determination of metal speciation are especially welcome. This session focuses on processes and fluxes in the modern oceans\, but submissions on paleo-oceanographic and paleo-environmental reconstructions are also welcome. Early career scientists are particularly encouraged to contribute to this session.
URL:https://www.geotraces.org/event/virtual-goldschmidt-2022/
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20220224T000000
DTEND;TZID=Europe/Paris:20220304T235959
DTSTAMP:20260502T230349
CREATED:20210726T114338Z
LAST-MODIFIED:20220224T194639Z
UID:12610-1645660800-1646438399@www.geotraces.org
SUMMARY:Ocean Sciences Meeting 2022
DESCRIPTION:Virtual event.  \n\n\n\nWeb page: https://www.aslo.org/osm2022/ \n\n\n\n\n\n\n\nGEOTRACES Town Hall:\n\n\n\nTH33 Accessing and utilizing the GEOTRACES 2021 Intermediate Data Product (IDP2021) \n\n\n\nThe international GEOTRACES program aims to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean\, and to establish the sensitivity of these distributions to changing environmental conditions. GEOTRACES has just released a new intermediate data product (GEOTRACES IDP2021)\, combining data acquired during the first 10 years of the program. It contains datasets on trace elements that serve as micronutrients\, tracers of continental sources to the ocean (e.g.\, aerosols and boundary exchange)\, contaminants (e.g.\, Pb and Hg)\, radioactive and stable isotopes used in paleoceanography and a broad suite of hydrographic parameters used to trace water masses. IDP2021 expands on\, and includes\, the collection of results from the Atlantic\, Pacific\, and Southern Oceans (IDP2014 and IDP2017) and includes new data from the Pacific\, Arctic and Indian Oceans. In addition\, IDP2021 includes a significant amount of BioGEOTRACES data on ligands\, enzymes\, and single cell quotas. IDP2021 will be of value to chemical\, biological\, and physical oceanographers\, especially those interested in biogeochemical cycles and the impact of micronutrients on marine carbon cycling. This Town Hall will introduce IDP2021\, explain how to access IDP2021\, and include some highlights on the use of GEOTRACES data. The goal is to intensify collaboration within the broader ocean research community but also seek feedback from the community to help us improve future data products. \n\n\n\nLead Organizer: William Landing\, Florida State University\, wlanding@fsu.edu \n\n\n\nDate and Time: Friday\, 2/25/2022 11:00 AM to 2/25/2022 12:00 PM (US EST) Location: Room 02 \n\n\n\nProgramme: \n\n\n\n\n– IntroductionBill Landing (Florida State University\, USA) \n\n\n\n– Introduction to GEOTRACES and to the GEOTRACES Intermediate Data Product 2021 (IDP2021)Catherine Jeandel (LEGOS\, Université de Toulouse\, CNES/CNRS/IRD/UT3\, Toulouse\, France)– Accessing the IDP2021Reiner Schlitzer (Alfred Wegener Institute (AWI)\, Bremerhaven\, Germany)– Education: Working with IDP2021 and webODV Explore toolPhoebe Lam (University of California\, Santa Cruz\, USA)– Exploration: Linking TEI and genomics data in IDP2021Maite Maldonado (University of British Columbia\, Vancouver\, Canada)– How can researchers register data for next IDP – The DOoR PortalBill Landing (Florida State University\, USA)– Q&A with speakersChaired by: Bill Landing (Florida State University\, USA) / Catherine Jeandel (LEGOS\, Université de Toulouse\, CNES/CNRS/IRD/UT3\, Toulouse\, France) \n\n\n\n\n \n\n\n\nGEOTRACES sessions:\n\n\n\nCT01 Temporal Variability of Bioactive Trace Elements in the Ocean: Towards Constraining Drivers\, Mechanisms and Timescales \n\n\n\nOrganizers:Peter Sedwick\, psedwick@odu.eduErin Black\, erinb@ldeo.columbia.eduAlessandro Tagliabue\, a.tagliabue@liverpool.ac.ukSimon Ussher\, simon.ussher@plymouth.ac.uk \n\n\n\nIn the past decade\, our understanding of the distribution of bioactive trace elements has improved greatly\, advancing the development of numerical models that provide mechanistic insight and predictive capability. However\, in addition to establishing the spatial distribution of biologically active trace elements\, it is equally important to understand their temporal variability. Such information provides critical constraints on the mechanisms that control the biogeochemical cycling of these elements\, and allows the assessment and expansion of numerical modeling efforts. In this session\, we invite interdisciplinary contributions from both observationalists and modelers that examine the time variation of bioactive trace elements in the ocean\, from both chemical and biological perspectives\, over timescales ranging from daily to millennial. \n\n\n\nCT03 Advances in understanding of the biogeochemical processes shaping the basin-scale distributions of trace elements and their isotopes \n\n\n\nOrganizers:Tim Conway\, tmconway@usf.eduLauren Kipp\, kipp@rowan.eduJessica Fitzsimmons\, jessfitz@tamu.eduGreg Cutter\, gcutter@odu.edu \n\n\n\nA range of important trace elements act as micronutrients\, toxins\, or tracers throughout the global oceans. The distributions of these trace elements are shaped by a range of biotic and abiotic processes including external sources and sinks\, microbial uptake and regeneration\, exchange with particles\, and physical circulation of the oceans. In recent years\, field programs such as GEOTRACES\, CLIVAR\, and SOLAS have hugely expanded the available datasets of trace elements and their isotopes (TEIs) throughout the oceans. These and other datasets are being used to determine the processes\, sources\, and sinks that control observed TEI distributions\, and the transformations and rates of input\, removal\, and exchange associated with each process. Here\, we invite submissions of abstracts using ocean transect\, field\, laboratory\, or modelling datasets that focus on the distribution\, isotopic composition\, speciation\, and cycling of TEIs at the basin-scale\, as well as abstracts which use geochemical tracers to interrogate the internal cycling and source/sink processes which shape these basin-scale distributions or transform TEIs within the ocean. In addition to studies that yield insights into the current distributions and cycling of TEIs\, we also invite submissions that investigate how the oceanic cycling of TEIs may change in response to the changing oceans and warming climate. \n\n\n\nCT10 Sources\, sinks\, and cycling of trace elements in coastal and near-shore systems \n\n\n\nOrganizers:David Janssen\, janssen.davej@gmail.comVeronique Oldham\, voldham@uri.eduEmily Estes\, estes@iodp.tamu.edu \n\n\n\nThe terrestrial-ocean continuum regulates the delivery of trace elements to the global ocean; however\, important gaps remain in understanding the complex cycling of trace elements in coastal systems. Further\, coastal systems face significant pressure from anthropogenic climate change\, nutrient loading\, and inputs of environmental toxins. This session aims to connect GEOTRACES-style studies on distributions of trace elements with studies examining processes and cycling of trace elements in nearshore environments to better bridge the terrestrial-ocean continuum. We invite contributions examining the cycling of trace elements and their isotopes in rivers\, wetlands and estuaries; inlets\, marginal seas and inland seas; and the near-shore coastal ocean. Field\, laboratory\, and modelling studies of trace element distributions\, speciation\, biological transformations\, sources and sinks\, and pollution & remediation are welcome. We particularly encourage studies (1) on the transport of terrestrially-sourced metals and dissolved organic matter to near-shore environments; (2) on metal fluxes to and from shelf sediments; (3) linking processes regulating near-shore trace element availability and their impact on the biosphere; and (4) investigating natural and anthropogenic perturbations on trace element cycling in these systems. \n\n\n\nCT11 Mercury transformations in marine ecosystems \n\n\n\nOrganizers:Eric Capo\, eric.capo@hotmail.frAmina Schartup\, aschartup@ucsd.eduHeyu Lin\, heyu.lin@student.unimelb.edu.auLars-Eric Heimbürger\, lars-eric.heimburger@mio.osupytheas.fr \n\n\n\nMercury (Hg) is a naturally occurring element that has been mined and released by humans for millennia. Inorganic Hg is released by natural processes such as volcanic activity\, and also by human activities which have largely outweighed natural ones. We have known for half a century that methylmercury is naturally formed in marine sediment and water column from inorganic Hg and is a potent neurotoxicant. The majority of global methylmercury exposure for human populations is from marine ecosystems due to its bioaccumulation in predatory fish at levels that are a million times\, or more\, higher than seawater. Yet our understanding of abiotic and biotic Hg transformations in marine systems is still limited. A greater understanding of the microbial reactions and geochemical conditions conducive to the formation and degradation of methylmercury is needed to mitigate its impacts on the health of fish-consuming wildlife and human populations. This session invites presentations on Hg transformations in marine ecosystems. \n\n\n\nOB20 Towards BioGeoSCAPES: Linking cellular metabolism with ocean biogeochemistry \n\n\n\nOrganizers:Adrian Marchetti\, amarchetti@unc.eduYoshiko Kondo\, yoshikondo@nagasaki-u.ac.jpNaomi Levine\, n.levine@usc.eduDalin Shi\, dshi@xmu.edu.cn \n\n\n\nBioGeoSCAPES is an international program initiative aimed at integrating knowledge on organism identity and physiology within frameworks of community ecology and global ocean biogeochemistry. It is envisioned that an improved\, predictive\, and quantitative understanding of ocean metabolism on a changing planet can be achieved by combining detailed information on plankton (i.e.\, virio-\, bacterio-\, phyto- and zoo-) cell status\, biochemical processes\, and species interactions with intercalibrated measurements of nutrient fluxes\, concentrations\, and speciation (e.g.\, macronutrients\, including inorganic and organic carbon\, micronutrients and vitamins). We invite contributions describing research that can serve as inspiration for this nascent program. Appropriate abstracts could include: studies that integrate cellular metabolism through physiological and ‘omics approaches (e.g.\, genomic\, transcriptomic\, proteomic\, metabolomic\, metallomic\, lipidomic\, etc.) with biogeochemical measurements\, including fluxes; or studies that scale from the cellular to the ecosystem level through integrated field measurements or mechanistic models of interactions. With the COVID-19 pandemic significantly impacting field research opportunities\, we are particularly interested in laboratory and modelling studies that provide new insights into BioGeoSCAPES-related topics across different scales of time and space. \n\n\n\nHL11 Arctic Ocean processes\, progress\, and potential explored through synthesis supported research \n\n\n\nOrganizers:Laura Whitmore\, lmwhitmore@alaska.eduLaramie Jensen\, jensenla@uw.eduRyan McCabe\, rmccabe.ocean@gmail.com \n\n\n\nSession Abstract:The Arctic Ocean is changing rapidly as a result of global climate change at rates disproportionate to other ocean basins. Changes in stratification\, circulation\, and ice cover are giving way to a cascade of biogeochemical and ecological changes that are altering the character of the Arctic Ocean. These changes influence the global ocean by modulating freshwater export from the Arctic Ocean to the North Atlantic Ocean\, the transfer of chemical constituents\, and the connectivity of organismal populations. Because of continued annual sea ice coverage and accessibility barriers; data collection across small (seasonal) and larger (annual to decadal) timescales has been historically difficult. In order to elucidate and ultimately predict the impacts of climate change on the Arctic Ocean system a synthetic and trans-disciplinary effort is valued. In this spirit\, we encourage submissions across ecological\, chemical\, physical\, and geological sub-disciplines with special consideration to interdisciplinary approaches and to studies investigating spatial and/or temporal scales.
URL:https://www.geotraces.org/event/ocean-sciences-meeting-2022/
LOCATION:Hawaii Convention Center\, Honolulu\, HI\, United States
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20211213
DTEND;VALUE=DATE:20211218
DTSTAMP:20260502T230349
CREATED:20210618T081643Z
LAST-MODIFIED:20210826T142651Z
UID:12284-1639353600-1639785599@www.geotraces.org
SUMMARY:AGU Fall Meeting 2021
DESCRIPTION:The abstract submission deadline is 4 August 2021 at 23:59 EDT/03:59 +1 GMT. \n\n\n\nTo submit an abstract: https://www.agu.org/Fall-Meeting/Pages/Present/Abstracts \n\n\n\nGEOTRACES session:\n\n\n\nPP024. Refinement of paleo-proxies in the GEOTRACES era \n\n\n\nhttps://agu.confex.com/agu/fm21/webprogrampreliminary/Session117493.html \n\n\n\nSession Description: \n\n\n\nOur knowledge of the past ocean relies upon measurable quantities in the sedimentary record that represent past conditions. The development of these proxies is driven by linking relationships between processes in the modern ocean and the transfer of signals into preserved archives\, ranging from bulk sediment to species-specific fossils. The international GEOTRACES program has been surveying the global ocean distribution of trace elements and isotopes\, many of which have specific paleoceanographic applications\, including protactinium-thorium ratios and neodymium isotopes. Furthermore\, the advancements GEOTRACES has made in the understanding of micronutrient metals\, redox sensitive metals and nutrient isotopic ratios also have significant implications for our understanding of past ocean circulation\, biological productivity\, particle Kuxes and climate. In this session we welcome abstracts focusing on either modern or past ocean systems that speak to the development\, calibration\, or modeling of proxies and/or any associated updates to our proxy-based understanding of ocean conditions \n\n\n\nCo-conveners: Christopher Hayes\, Kazuyo Tachikawa\, Kassandra Costa and Jesse R Farmer.
URL:https://www.geotraces.org/event/agu-fall-meeting-2021/
LOCATION:New Orleand and Online\, United States
CATEGORIES:GEOTRACES,GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211117T000000
DTEND;TZID=Europe/Paris:20211118T235959
DTSTAMP:20260502T230349
CREATED:20211015T084900Z
LAST-MODIFIED:20211019T120826Z
UID:13340-1637107200-1637279999@www.geotraces.org
SUMMARY:Launch of GEOTRACES Intermediate Data Product 2021
DESCRIPTION:We are incredibly excited to announce the launch of theGEOTRACES Intermediate Data Product 2021 (IDP2021). \n\n\n\n\n\n\n\nJoin the webinar launch at one of the following day/times: \n\n\n\n17 November 2021 at 14h00-15h30 UTC \n\n\n\n18 November 2021 at 01h00-02h30 UTC \n\n\n\n\n\n\n\n\nRegister for the webinar\n\n\n\n\nDeadline to register: 15 November 2021 \n\n\n\n\n\n\n\n\nWebinar Programme: \n\n\n\n\nIntroductionAlessandro Tagliabue (University of Liverpool\, UK) / Bill Landing (Florida State University\, US)What does the Intermediate Data Product 2021 include and how can it be accessed?Reiner Schlitzer (Alfred Wegener Institute\, AWI\, Germany)\n\n\n\n\n\n\n\nIntermediate Data Product 2021 panelReiner Schlitzer (AWI\, Germany)\, Maite Maldonado (University of British Columbia\, Canada)\, Rob Middag (NIOZ\, The Netherlands) / Jun Nishioka (Hokkaido University\, Japan)\, Adrian Burd (University of Georgia\, US)Chaired by: Alessandro Tagliabue (University of Liverpool\, UK) / Bill Landing (Florida State University\, US)\n\n\n\n\n\n\n\nScience highlightsInternational synthesis in the Arctic: Laramie Jensen (University of Washington\, US)New insights from the Indian Ocean: Sunil Kumar Singh (National Institute of Oceanography\, India)Constraining elemental cycling using data and models: Tom Weber (University of Rochester\, US)Q&A with speakersChaired by: Alessandro Tagliabue (University of Liverpool\, UK) / Bill Landing (Florida State University\, US)\n\n\n\n\n\nImage copyright: Adrian ARTIS based on graphics from Schlitzer\, R.\, eGEOTRACES – Electronic Atlas of GEOTRACES Sections and Animated 3D Scenes\, http://www.egeotraces.org\, 2017.
URL:https://www.geotraces.org/event/launch-of-geotraces-intermediate-data-product-2021/
CATEGORIES:GEOTRACES,GEOTRACES Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20211109T000000
DTEND;TZID=Europe/Paris:20211110T235959
DTSTAMP:20260502T230349
CREATED:20210726T063344Z
LAST-MODIFIED:20210909T075648Z
UID:12552-1636416000-1636588799@www.geotraces.org
SUMMARY:Blowing South: Southern Hemisphere Dust Symposium
DESCRIPTION:Symposium Website: http://dust2021.cima.fcen.uba.ar/Download the brochure \n\n\n\nAbstract submission will close on 21 September 2021. NEW DEADLINE! \n\n\n\nRationale:\n\n\n\nDust is an essential component of the climate and the Earth system dynamics\, participating in feedbacks with the radiative balance\, precipitation\, atmospheric and ocean biogeochemistry and land use\, including impacts on human health. Compared to the Northern Hemisphere\, dust in the Southern Hemisphere has traditionally received less attention. However\, a growing body of literature stresses the importance of dust in southern latitudes\, since southern land masses are the most important sources of dust deposited on the southern oceans\, the most extensive of the high-macronutrient\, low-chlorophyll water bodies. In southern polar and subpolar regions\, the long-range transport of dust potentially affects high-latitude albedo of snow- and ice-covered surfaces. \n\n\n\nSymposium aim:\n\n\n\nThis symposium will focus on bringing together international scientists working on observation and modeling of the present-day and paleo dust cycle in the Southern Hemisphere\, across temporal and spatial scales\, including both feedback with climate and impact on society. \n\n\n\nParticipants will discuss the latest advances in their work and share their major scientific questions. This will provide an opportunity to discuss recent and on-going work on these critical issues\, and to expand on pre-existing collaborations that in certain areas of research and in certain regions are still quite limited. \n\n\n\nContact: shdustsymposium@gmail.com
URL:https://www.geotraces.org/event/blowing-south-southern-hemisphere-dust-symposium/
CATEGORIES:GEOTRACES,GEOTRACES Scientific Workshops
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20210929
DTEND;VALUE=DATE:20211002
DTSTAMP:20260502T230349
CREATED:20201119T141634Z
LAST-MODIFIED:20210726T122909Z
UID:9702-1632873600-1633132799@www.geotraces.org
SUMMARY:2021 GEOTRACES SSC meeting
DESCRIPTION:Location: virtual meeting
URL:https://www.geotraces.org/event/2021-geotraces-ssc-meeting/
LOCATION:Virtual Meeting\, VA
CATEGORIES:GEOTRACES Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20210726
DTEND;VALUE=DATE:20210731
DTSTAMP:20260502T230349
CREATED:20201109T094353Z
LAST-MODIFIED:20210726T122825Z
UID:9640-1627257600-1627689599@www.geotraces.org
SUMMARY:Iron at the Air-Sea Interface Workshop
DESCRIPTION:Asheville\, NC\, USAWorkshop web site: https://zzqvaay3twhzlhnmvpvdvq-on.drv.tw/Web/Iron_Workshop/\n\n\n\nWorkshop co-sponsored by GEOTRACES and SOLAS! \n\n\n\nThe motivation for the workshop: Aerosol labile iron (LFe)\, the fraction of total aerosol iron that contributes to the dissolved Fe (DFe) inventory of the ocean\, is a crucial source of the micronutrient Fe to the remote marine environment. Current models for the ocean biogeochemical cycling of Fe assume that after deposition to the surface ocean\, all aerosol-LFe gets chelated by “free” marine organic ligands and gets converted to DFe. Yet laboratory studies and numerical simulations have shown that after deposition to the ocean only a small fraction of LFe may be chelated by marine organic ligands and enter the DFe pool. This happens because the free ligand concentration in the dust-affected region of the ocean gets quickly exhausted and the short lifetime of inorganic LFe in seawater does not allow for replenishment of organic ligands by the surface ocean vertical mixing and/or biological production and release. The efficiency of LFe to DFe conversion is one of the major unknowns for the global biogeochemical cycling of Fe. \n\n\n\nThis workshop is dedicated to an improved understanding of how does bioaccessible LFe move across the ocean-atmosphere interface and become bioavailable for uptake in the ocean at scales important for ocean ecosystems and the carbon cycle. \n\n\n\nGoals and expected outcomes of the workshop: 1) A white paper that will provide a workshop assessment report based on the consensus reached by diverse researchers from the oceanographic and atmospheric science communities with backgrounds in the laboratory and in situ measurements\, modeling\, and remote sensing\, and 2) a breakout session at AGU 2021 fall meeting to disseminate the workshop findings to the wider research community interested in the global biogeochemical cycling of iron. \n\n\n\nThe registration for the Iron Workshop is open until June 25\, 2021:https://zzqvaay3twhzlhnmvpvdvq-on.drv.tw/Web/Iron_Workshop/register.html \n\n\n\nFor further information on the registration fee\, agenda and logistics for this workshop please go to the workshop web page: https://zzqvaay3twhzlhnmvpvdvq-on.drv.tw/Web/Iron_Workshop/ \n\n\n\nFor questions regarding the workshop please contact Nicholas Meskhidze (NC State University) or Bill Landing (Florida State University).
URL:https://www.geotraces.org/event/iron-at-the-air-sea-interface-workshop/
LOCATION:Cambria Hotel Downtown Asheville\, Asheville\, United States
CATEGORIES:GEOTRACES Relevant Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20210717
DTEND;VALUE=DATE:20210724
DTSTAMP:20260502T230349
CREATED:20201120T145616Z
LAST-MODIFIED:20210726T082818Z
UID:9716-1626480000-1627084799@www.geotraces.org
SUMMARY:2021 Gordon Research Conference (GRC) and Seminar (GRS) on Chemical Oceanography - Deferred to 2023!
DESCRIPTION:Location: Southern New Hampshire University\, Manchester\, NH\, US\n\n\n\nThis conference has been deferred to 2023 due to the ongoing impact of the COVID-19 pandemic. Please check back soon for the 2023 schedule.  \n\n\n\nGRC: Chemical Tracers in the Sea\n\n\n\nChemical tracers integrate time scales\, and source and transformation histories and have thus played a crucial role in oceanography. For this meeting\, we hope to focus on the development\, verification and application of chemical tracers of ocean chemistry\, biology and physics in the present and past\, with an eye toward predicting the future. Processes of interest could include the changing circulation and ventilation of the oceans\, the biological carbon pump including the sedimentary sink\, major chemical inputs into the ocean\, and internal transformations that impact the cycling of elements including rates. Talks will focus on the development of tracers including stable and radioactive isotopes\, organic and inorganic molecules\, analytical advances and the application of these tracers to improve our understanding of the “anthropocene”-\, holocene-\, and paleo-ocean. \n\n\n\nThe 2019 GRC will be preceded by a Gordon Research Seminar (GRS) in Chemical Oceanography that is open to graduate students and postdocs in Chemical Oceanography and related fields. The GRS provides a forum for early career researchers to present research results\, promote networking\, and to conduct career building discussions within a peer-to-peer setting. \n\n\n\nFor further information Gordon Research Seminar (GRS): https://www.grc.org/chemical-oceanography-grs-conference/2021/For further information Gordon Research Conference (GRC): https://www.grc.org/chemical-oceanography-conference/2021/
URL:https://www.geotraces.org/event/2021-gordon-research-conference-grc-and-seminar-grs-on-chemical-oceanography/
LOCATION:Southern New Hampshire University\, 2500 North River Road\, Manchester\, NH\, United States
CATEGORIES:GEOTRACES Relevant Workshop
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20210704
DTEND;VALUE=DATE:20210710
DTSTAMP:20260502T230349
CREATED:20210119T092952Z
LAST-MODIFIED:20210726T122748Z
UID:11144-1625356800-1625875199@www.geotraces.org
SUMMARY:Virtual Goldschmidt 2021
DESCRIPTION:Goldschmidt is the foremost annual\, international conference on geochemistry and related subjects\, organized by the Geochemical Society and the European Association of Geochemistry. Given the exceptional circumstances due to the current Covid-19 pandemic\, the Goldschmidt2021 Conference will be an online meeting. \n\n\n\nGEOTRACES session: \n\n\n\n13a. Marine biogeochemistry: Particle fluxes and dissolved trace element cycling from source to sink \n\n\n\nConveners: Adi Torfstein\, Hebrew University of JerusalemPhoebe Lam\, University of California\, Santa CruzWilliam B Homoky\, University of LeedsErin Black\, Lamont-Doherty Earth ObservatoryAmber Annett\, University of SouthamptonChristopher T Hayes\, University of Southern Mississippi \n\n\n\nProvisional keynote:Claudia Benitez-Nelson\, University of South Carolina \n\n\n\nThe compositions of seawater and marine particulate material\, and their temporal and spatial fluxes and exchange\, play a pivotal role in modulating the biological pump and atmospheric CO2 uptake\, as well as various biogeochemical processes in the oceans. Determination of the inputs\, settling fluxes\, remineralization rates\, chemical scavenging and the linkage of particles to seawater composition and marine productivity\, are therefore critical for a full understanding of marine biogeochemical cycles and their impact on global climate. \n\n\n\nHere we seek contributions on the following non-exclusive topics: (1) new methodologies for determination of trace element concentrations\, isotopic compositions\, or particle flux rates\, (2) new approaches to characterize particle compositions\, including across size classes\, mineralogical phases or different environments\, or (3) the interactions between particles and dissolved distributions. We encourage submissions of multi-disciplinary studies\, such as GEOTRACES or other programs\, including applications of radionuclides\, experimental and analytical isotope geochemistry\, modeling\, and trace element partitioning between solid\, colloidal and dissolved phases. We focus on studies that describe processes in the modern oceans but submissions discussing paleoceanographic conditions are welcome. We further seek studies that focus on the interplay between external sources (e.g.\, dust\, rivers\, margins)\, surface productivity and marine particulate and dissolved compositions and fluxes.
URL:https://www.geotraces.org/event/2021-goldschmidt-conference/
LOCATION:Lyon & on-line\, France
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20210622
DTEND;VALUE=DATE:20210628
DTSTAMP:20260502T230349
CREATED:20210216T125758Z
LAST-MODIFIED:20210726T122712Z
UID:11281-1624320000-1624838399@www.geotraces.org
SUMMARY:ASLO 2021\, Aquatic Sciences Meeting
DESCRIPTION:Virtual Meeting\n\n\n\nAquatic Sciences for a Sustainable Future:  Nurturing Cooperation\n\n\n\nInitially this meeting was scheduled to be held in Palma\, but due to COVID-19\, it is necessary to hold the ASLO 2021 Aquatic Sciences Meeting virtually. However\, organisers plan to meet in Palma in 2023. \n\n\n\nEvent website: https://www.aslo.org/2021-virtual-meeting/ \n\n\n\nGEOTRACES and GEOTRACES related sessions:\n\n\n\n*SS63 Towards a mechanistic understanding of metal-microbe interactions in the Oceans\n\n\n\nMartha Gledhill\, GEOMAR Helmholtz Center for Ocean ResearchYeala Shaked\, Interuniversity Institute for Marine Sciences & The Fredy and Nadine Herrmann Institute of Earth Sciences\, Hebrew University of Jerusalem\, JerusalemIngrid Obernosterer\, Microbial Oceanography Laboratory(LOMIC)\, CNRS-Sorbonne University \n\n\n\nTrace metals are essential for life\, catalysing key cellular reactions which then govern patterns of ocean fertility and biodiversity. Fundamental in this regard are the ways in which ocean microbes acquire essential metals and how biological activity is affected by metal availability. Diverse microbial community members can compete for this scarce resource\, and trace-metal related metabolic functions can also be partitioned among taxa and benefit the whole population. Defining these interactions is critical for understanding the relationship between metabolic rates and elemental cycles in the ocean. 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 within the context of high resolution geochemical such as obtained as part the international GEOTRACES program. In this session we invite contributions that bring together insights from these different disciplines to better understand how microbial activity\, diversity and ecology is shaped by interactions with trace metals over different space and time scales. By linking across disciplines\, there is the potential to develop the mechanistic understanding required to inform the ecological and biogeochemical models we rely on for testing hypotheses and projecting the impacts of ocean change that will result from the impending BioGeoScapes program. We are specifically interested in contributions that address (i) metal uptake and interactions between microbes for metal resources\, (ii) how microbes adapt their physiology to metal scarcity and varied supply\, and (iii) how trace metals shape microbial activity and diversity in the ocean. \n\n\n\n*SS03 Distribution and impacts of ocean nutrient limitation\n\n\n\nThomas Browning\, GEOMAR Helmholtz Centre for Ocean Research KielMark Moore\, University of SouthamptonErin Bertrand\, Dalhousie UniversityAlessandro Tagliabue\, University of Liverpool \n\n\n\nNutrient limitation constrains primary production throughout the global ocean and regulates its responses to climate change. A broadscale picture of nutrient limitation in the current ocean has emerged\, with nitrogen limitation revailing in the stratified subtropical gyres and iron limitation in open ocean and some coastal upwelling regions. However\, new research is rapidly adding important detail to this simple picture. Evidence continues to accumulate for co-limitation between these and other nutrients\, including additional trace elements and vitamins. Such (co-)limitations are likely set by nutrient supply and removal mechanisms to and from the surface ocean\, phytoplankton elemental stoichiometry\, as well as microbial interactions within communities that are simultaneously under the influence of multiple additional abiotic (light\, temperature) and biotic (grazing\, viral lysis) controls. To understand this complexity\, new approaches ranging from advances in ‘-omics’ capabilities\, coordinated cruise programmes and autonomous platform observations\, through to alternative mathematic constructions of nutrient limited growth rates\, are being utilized. Such advances are urgently needed to better understand the drivers and impacts of oceanic nutrient limitation\, as well as meeting the needs of testing and improving Earth System Model simulations projecting the impacts of climate change. This session invites contributions utilizing in situ\, experimental\, and modelling approaches that represent new advances in understanding oceanic nutrient limitation. These could range from those describing the basic distribution and identity of limiting nutrients for diverse microbial groups to understanding the mechanisms\, impacts\, and future development of nutrient limitation in the ocean. \n\n\n\nThe full session list of sessions is available at: https://www.aslo.org/2021-virtual-meeting/session-list/
URL:https://www.geotraces.org/event/aslo-2021-aquatic-sciences-meeting/
LOCATION:Virtual Meeting\, VA
CATEGORIES:GEOTRACES Relevant Special Sessions
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END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20210604
DTEND;VALUE=DATE:20210625
DTSTAMP:20260502T230349
CREATED:20210427T075405Z
LAST-MODIFIED:20220217T151429Z
UID:11905-1622764800-1624579199@www.geotraces.org
SUMMARY:OCB Summer Workshop
DESCRIPTION:Registration is free and open to all. If you are interested in attending part or all of the OCB workshop\, you must register in order to receive connection information for the virtual sessions. Connection information will be sent out a few days before each session. Please register by June 1. \n\n\n\nGEOTRACES will be present at the OCB Networking sessions: \n\n\n\nMonday\, June 7 from 3:30-5:00 pm EDT – Catherine Jeandel and Elena Masferrer (GEOTRACES IPO)Tuesday\, June 15 from 12:30-1:30 pm EDT – Maite Maldonado\, Bob Anderson and Elena MasferrerTuesday\, June 22 from 4:45-5:30 pm EDT – Catherine Jeandel and Bob Anderson.\n\n\n\nOCB2021 plenary topics: \n\n\n\nBridging the divide between ocean biology and geochemistry (Chairs: Dreux Chappell\, Adam Martiny\, Patrick Rafter)Optical biogeochemistry: Above and below the waterline (Chairs: Amy Maas\, Seth Bushinsky\, Maria Tzortziou)Ocean-based negative emissions technologies (Chairs: Lennart Bach\, Jaime Palter\, Clare Reimers\, Patrick Rafter)Ocean Worlds (Chairs: Laura Lorenzoni\, Chris German\, Alison Murray\, Ashley Kleinman\, Paula Bontempi\, Adam Martiny)Opportunities and Challenges in Ecological Forecasting (Chairs: Victoria Coles\, Marjorie Friedrichs\, Charlie Stock\, Susanne Menden-Deuer\, Raleigh Hood)\n\n\n\nOCB will kick off with a virtual early career mixer on June 4. Virtual partial day OCB sessions are tentatively planned for June 7\, 11\, 15\, 18\, 22\, and 24. In addition to plenary sessions\, OCB 2021 will include targeted community discussions on OCB-relevant topics\, OCB activity updates\, early career and agency program manager networking events\, virtual poster sessions\, and more!
URL:https://www.geotraces.org/event/ocb-summer-workshop/
LOCATION:Virtual Meeting\, VA
CATEGORIES:GEOTRACES Relevant Special Sessions
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END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20210304
DTEND;VALUE=DATE:20210312
DTSTAMP:20260502T230349
CREATED:20210218T080759Z
LAST-MODIFIED:20210726T122432Z
UID:11310-1614816000-1615507199@www.geotraces.org
SUMMARY:Fukushima Dai-ichi and the Ocean: 10 years of study and insight
DESCRIPTION:The events in Japan that began on March 11\, 2011\, with the country’s largest recorded earthquake and a tsunami of remarkable power\, leading to the initial and ongoing releases of radioactive materials from the Fukushima Dai-ichi Nuclear Power Plant. \n\n\n\nJoin us on March 4th as we look back at what we’ve learned over the past 10 years during two virtual panels\, both at 7:30 pm\, one timed for Tokyo with the second for the U.S. East Coast\, using simultaneous translation at the Tokyo event for Japanese and English speakers. \n\n\n\nYou will need to register for these free panel events: https://cmer.whoi.edu/10-years-of-study-and-insight/ \n\n\n\nWe are pleased to announce that the panels will be moderated by Miles O’Brian\, with keynote introductions by Atsuko Yoko Fish (Tokyo event) and Caroline Kennedy (US event). The panel of four experts- J. Kanda (Tokyo U. Marine Sci & Tech)\, K. Buesseler (WHOI\, USA)\, S. Charmasson (IRSN\, France)\, A. Brown (Safecast\, Japan)- will review events that occurred\, explore the fate of the radioactive contaminants in the ocean\, the consequences for marine life and human consumers of seafood\, and finally explore communication of these events to the public. The presentations and panel discussion will be moderated with the general public in mind and will be of interest to policy-makers\, industry leaders\, and the research community. It will also include time for questions from the audience. \n\n\n\nFinally\, during the week of March 4-11\, we will host a virtual poster session accompanied by short audio presentations in English and Japanese with the option to leave your questions for the poster authors. \n\n\n\nTogether\, the keynotes\, panels\, and poster session will offer a fitting memorial of events in 2011 and will also provide an informative and accessible summation of work that occurred over the past decade as a result.
URL:https://www.geotraces.org/event/fukushima-dai-ichi-and-the-ocean-10-years-of-study-and-insight/
LOCATION:Virtual Meeting\, VA
CATEGORIES:GEOTRACES Relevant Workshop
ATTACH;FMTTYPE=image/png:https://www.geotraces.org/wp-content/uploads/2021/02/Screenshot-2021-02-18-at-09.19.11.png
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20201201
DTEND;VALUE=DATE:20201218
DTSTAMP:20260502T230349
CREATED:20200824T092824Z
LAST-MODIFIED:20210726T122336Z
UID:8867-1606780800-1608249599@www.geotraces.org
SUMMARY:AGU Fall Meeting
DESCRIPTION:GEOTRACES-related session: \n\n\n\nTitle: Advances in Understanding Meridional Overturning Circulation from Past to Future: Insights from Multiple Approacheshttps://agu.confex.com/agu/fm20/meetingapp.cgi/Session/110375 \n\n\n\nAbstract:The Meridional Overturning Circulation (MOC) is a major driver of Earth’s climate and biogeochemical cycling on many timescales. Modern oceanographic observations and modeling studies are making great advances in understanding MOC dynamics\, predictability\, and connections to Earth’s systems over seasonal to decadal periods. Meanwhile\, paleoclimate observations and modeling studies have highlighted the close link between changes in the climate system and variations in the structure and/or magnitude of MOC over multi-decadal to tectonic timescales. Much remains to be understood about the interplay between MOC changes and the cryosphere\, atmosphere\, and ocean biogeochemistry\, as well as mechanisms driving past\, present and future MOC variations. Modern and Paleo approaches are complementary and together bring new insights into MOC dynamics and predictability under future climate conditions. This session welcomes theoretical\, modeling\, and observation-based studies that investigate the nature\, stability and sensitivity of the MOC to external forcing and internal feedbacks across seasonal-to-tectonic timescales. \n\n\n\nPrimary ConvenersKelly H KilbourneUniversity of Maryland Center for Environmental Science Chesapeake Biological Lab \n\n\n\nConvenersFeng HeUniversity of Wisconsin-MadisonXu ZhangLanzhou UniversityJulia GottschalkLamont-Doherty Earth Observatory\, Columbia University of the City of New York
URL:https://www.geotraces.org/event/agu-fall-meeting/
LOCATION:Virtual Meeting\, VA
CATEGORIES:GEOTRACES Relevant Special Sessions
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20200915
DTEND;VALUE=DATE:20200918
DTSTAMP:20260502T230349
CREATED:20200707T073755Z
LAST-MODIFIED:20210726T122246Z
UID:7182-1600128000-1600387199@www.geotraces.org
SUMMARY:2020 GEOTRACES SSC Meeting
DESCRIPTION:2020 GEOTRACES SSC MeetingDates: 15-17 September 2020Location: Virtual
URL:https://www.geotraces.org/event/2020-geotraces-ssc-meeting/
CATEGORIES:GEOTRACES Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20200913
DTEND;VALUE=DATE:20200915
DTSTAMP:20260502T230349
CREATED:20200707T073849Z
LAST-MODIFIED:20210726T122233Z
UID:7184-1599955200-1600127999@www.geotraces.org
SUMMARY:2020 GEOTRACES DMC Meeting
DESCRIPTION:2020 GEOTRACES DMC MeetingDates: 13-14 September 2020Location: Virtual
URL:https://www.geotraces.org/event/7184/
CATEGORIES:GEOTRACES Meetings
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20200621
DTEND;VALUE=DATE:20200627
DTSTAMP:20260502T230349
CREATED:20200304T100108Z
LAST-MODIFIED:20210726T122204Z
UID:5728-1592697600-1593215999@www.geotraces.org
SUMMARY:Virtual Goldschmidt 2020
DESCRIPTION:Goldschmidt is the foremost annual\, international conference on geochemistry and related subjects\, organized by the Geochemical Society and the European Association of Geochemistry. \n\n\n\nGEOTRACES session: \n\n\n\n14m: Biogeochemical Cycling of Trace Elements and their Isotopes in the Oceans (GEOTRACES) \n\n\n\nConveners: Tim Conway\, Mariko Hatta\, Nick Hawco \n\n\n\nKeynote: Brandy TonerInvited Speakers: Jun Nishioka\, Sam Wilson \n\n\n\nTrace elements and their isotopes (TEIs) play critical roles in ocean biogeochemistry and carbon cycling\, as well as providing new insights into oceanic processes such as circulation\, ventilation\, particle scavenging\, primary productivity\, redox state and source/sink processes. In the last decade\, the International GEOTRACES Program has facilitated rapid progress in this area\, providing a wealth of data\, answers and new questions for our understanding of past and present ocean TEI cycling. In this session\, we aim to bring together studies from a range of disciplines\, over a range of scales\, that aim to address current questions in marine biogeochemical cycling. We invite submissions concerning any aspects of trace element chemistry and biogeochemistry in the oceans\, and encourage submissions presenting process studies or making use of large-scale concentration distributions or modeling of TEIs or their isotopes to provide new insights. Given the Hawaiian location of Goldschmidt in 2020\, and the recent sharp focus on the importance of East Pacific Rise and Loihi as TEI sources\, we especially encourage submissions dealing with the biogeochemistry of both near and far-field hydrothermal activity. We also encourage studies which focus on rates\, abiotic/biotic particle scavenging\, trace-metal speciation\, redox and isotope cycling\, organic ligand metal interactions\, and boundary exchange (redox\, atmosphere\, sediments\, hydrothermal\, rivers)\, or those that aim to use trace element isotope systems (e.g. Ba\, Si\, Zn\, Cd\, Cr\, Ni) as redox or productivity paleoproxies.
URL:https://www.geotraces.org/event/goldschmidt-2020/
LOCATION:Virtual Meeting\, VA
CATEGORIES:GEOTRACES Relevant Special Sessions
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20200506
DTEND;VALUE=DATE:20200509
DTSTAMP:20260502T230349
CREATED:20200203T095807Z
LAST-MODIFIED:20210726T122141Z
UID:5169-1588723200-1588982399@www.geotraces.org
SUMMARY:US GEOTRACES GP17 cruise planning workshop
DESCRIPTION:Note: To to the COVID-19 situation\, this meeting will be held online via Zoom 6-8 May 2020. It is an invitation-only meeting with a maximum attendance of 70. \n\n\n\nBackground\n\n\n\nUS GEOTRACES will hold a workshop 6 – 8 May 2020 at Old Dominion University to coordinate the scientific objectives and supporting logistics for a section to run from Tahiti to Amundsen Sea to the Chilean shelf (GEOTRACES Section GP17). Because of logistics issues this section would involve two separate research cruises\, tentatively planned for late 2021 and early 2022. Principal investigators interested in conducting research as part of one or both of these cruises are invited to attend a project planning workshop in Norfolk\, VA (details to follow). No prior involvement in GEOTRACES is necessary to participate. \n\n\n\nAn essential goal of this workshop is to supply potential participants and collaborators with all the pertinent details on\, and science behind\, the proposed cruises so that they can write successful proposals and therefore make the collaborative GP17 cruises a success. Workshop participants will have an opportunity to present their anticipated research contributions for the section in very brief advocacy talks. \n\n\n\nAnnouncement\n\n\n\nPlease click here to download the announcement.
URL:https://www.geotraces.org/event/us-geotraces-gp17-cruise-planning-workshop/
LOCATION:Virtual Meeting\, VA
CATEGORIES:GEOTRACES Cruise Workshops
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BEGIN:VEVENT
DTSTART;VALUE=DATE:20200312
DTEND;VALUE=DATE:20200314
DTSTAMP:20260502T230349
CREATED:20200306T135241Z
LAST-MODIFIED:20210726T121645Z
UID:5841-1583971200-1584143999@www.geotraces.org
SUMMARY:French GEOTRACES SWINGS (GS02) pre-cruise meeting
DESCRIPTION:SWINGS is a multidisciplinary 4-year project fully dedicated to elucidate trace element sources\, transformations and sinks along a section crossing key areas of the Southern Ocean (SO). SWINGS aims at 1) establishing the relative importance of sedimentary\, atmospheric and hydrothermal sources of trace elements and isotopes (TEIs) in the Indian sector of the SO\, 2) investigating the drivers of the internal trace element cycles: biogenic uptake\, remineralization\, particle fate\, and export\, and 3) quantifying TEI transport by the Antarctic Circumpolar Current and the complex frontal areas at the confluence between Indian and Atlantic Oceans. Learn more about the project here. \n\n\n\nAgenda \n\n\n\nThe agenda of the pre-cruise meeting is available to download here.
URL:https://www.geotraces.org/event/french-geotraces-swings-gs02-pre-cruise-meeting/
LOCATION:Pôle Numérique Brest Iroise (PNBI)\, 305 Avenue Alexis de Rochon\, Plouzané\, France
CATEGORIES:GEOTRACES Cruise Workshops
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20200216
DTEND;VALUE=DATE:20200222
DTSTAMP:20260502T230349
CREATED:20191010T081347Z
LAST-MODIFIED:20210726T112538Z
UID:3277-1581811200-1582329599@www.geotraces.org
SUMMARY:2020 Ocean Sciences Meeting 
DESCRIPTION:2020 Ocean Sciences Meeting Dates: 16-21 February 2020Location: San Diego\, California\, USA. \n\n\n\nFor more information: https://www2.agu.org/ocean-sciences-meeting \n\n\n\nGEOTRACES and GEOTRACES related sessions: \n\n\n\nRevealing Biogeochemical Processes on Basin Scales through Ocean TransectsSession ID#: CT008https://agu.confex.com/agu/osm20/prelim.cgi/Session/84582 \n\n\n\nBiogeochemical processes that affect the cycling of trace elements and their isotopes\, as well as carbon\, macronutrients and other constituents\, are studied using two basic field strategies: sampling at a fixed station or regime to measure rates and examine specific processes\, or transects on up to basin scales. Each has its strengths and weaknesses\, but transects can gather a broad sweep of information on a relatively short time scale that can then be used to develop a more specific process-oriented approach. Indeed\, the GEOSECS program of the 1970’s used the transect approach\, and currently the GO-SHIP/Repeat Hydrography and international GEOTRACES programs feature long ocean transects. This session will highlight biogeochemical processes revealed on basin transects that affect trace constituents such as trace elements and isotopes\, as well as organic constituents\, including carbon and macronutrients. It will also focus on sampling and data analysis methods applied to sampling across basins\, and biogeochemical modeling studies that integrate data from long transects into their analyses. \n\n\n\nPrimary Chair: Gregory A Cutter\, Old Dominion University. \n\n\n\nCo-chairs: Phoebe J Lam\, University of California Santa Cruz;  Karen L Casciotti\, Stanford University; Rob Middag\, Royal Netherlands Institute for Sea Research. \n\n\n\nLinking the biology\, geochemistry\, and circulation of the Gulf of MexicoSession ID#: OB015https://agu.confex.com/agu/osm20/prelim.cgi/Session/84432 \n\n\n\nSession Description: \n\n\n\nThe Gulf of Mexico is a small\, dynamic marginal sea that supports a broad range of oceanographic environments\, including eutrophic coastal systems\, oligotrophic open ocean waters\, hydrocarbon-impacted waters and sediments\, and shelf waters that are susceptible to frequent harmful algal blooms. Large atmospheric\, riverine\, and submarine groundwater fluxes strongly influence the biogeochemistry of near-shore and open ocean waters\, yielding a high degree of spatial and temporal variability. Several recent studies have focused on characterizing the biogeochemistry of the Gulf of Mexico using a range of interdisciplinary approaches. Following on a successful 2018 OSM Town Hall led by GEOTRACES and OCB\, this session will bring together interested investigators to highlight new results from the Gulf and identify potential areas of common interest and collaborative opportunities to help inform future planning in GEOTRACES\, OCB\, and other relevant programs. We invite contributions that characterize the variability in the biology\, geochemistry\, and/or physical oceanography of the Gulf of Mexico\, and especially the linkages between them. Suggested contributions may include\, but are not limited to descriptions of water column and benthic geochemical distributions\, biogeochemical rate measurements\, characterizations of molecular ecology\, geochemical fluxes\, and descriptions of circulation that impact Gulf biogeochemical dynamics. \n\n\n\nPrimary Chair: Angela N Knapp\, Florida State University. \n\n\n\nCo-chairs: Alan M Shiller\, University of Southern Mississippi; Heather M Benway\, Woods Hole Oceanographic Inst.; Juan Carlos Herguera\, Center for Scientific Research and Higher Education at Ensenada. \n\n\n\nControls on trace metal biogeochemistry and physicochemical speciation in seawaterSession ID#: CT004https://agu.confex.com/agu/osm20/prelim.cgi/Session/85790 \n\n\n\nSession Description: \n\n\n\nTrace metals function as essential micronutrients and pollutants in the ocean. Organic complexation\, size partitioning\, and redox changes of trace elements can be mediated by biological processes including uptake\, regeneration\, cell lysis\, and organic ligand production. Additional processes influencing the production\, degradation\, and composition of organic matter also play an important role in controlling trace metal distributions\, and both vary across environments (e.g. estuaries\, open ocean\, air-sea-sediment interfaces\, hydrothermal systems). In turn\, resulting changes in bioavailability and cycling of trace elements governs the function and composition of marine phytoplankton communities. Recent efforts\, particularly within GEOTRACES\, have expanded the database of trace metal concentrations and physicochemical speciation. This session seeks to link our understanding of biology\, organic matter\, and trace metal chemistry from molecular to basin-wide scales\, from studies related to biologically-mediated transformations of trace elements to the wider processes controlling metal distributions\, size partitioning\, and fluxes. We welcome submissions highlighting how marine organisms influence the physicochemical speciation of trace elements in seawater\, and how changes in trace element chemistry impact the structure and function of marine ecosystems. In addition to observational\, experimental and modelling studies\, we also invite contributions on the production\, degradation\, and characterization of metal-binding compounds and colloids. \n\n\n\nPrimary Chair: Hannah Whitby\, IUEM Institut Universitaire Européen de la Mer. \n\n\n\nCo-chairs: Randelle M Bundy\, University of Washington; Jessica N Fitzsimmons\, Texas A & M University College Station; Andrea Koschinsky\, Jacobs University Bremen. \n\n\n\nBiogeochemical cycles in oxygen minimum zones: mechanisms\, drivers\, and changeSession ID#: CT001https://agu.confex.com/agu/osm20/prelim.cgi/Session/85226 \n\n\n\nSession Description: \n\n\n\nOxygen minimum zones in the coastal and open ocean are spatially expanding and intensifying\, with model projections showing continued O2 loss in the future. These regions play a fundamental role in the biogeochemical cycles of elements such as carbon\, nitrogen and sulfur as well as trace elements\, host microbial communities with diverse metabolic pathways\, and act as significant sources and sinks of nutrients and climatically relevant (greenhouse) gases. Yet\, significant questions on the nature\, drivers and variability of these processes remain. This session aims to build a comprehensive view of oxygen minimum zone biogeochemistry\, by inviting researchers who apply a variety of approaches to these problems\, from field and laboratory measurements\, to -omics based studies\, to observational synthesis and numerical models. Specifically\, we invite submissions investigating: (1) the distribution\, speciation and transformation of macronutrients (N\, P\, Si)\, trace metals (e.g. Mn\, Fe\, Co\, Ni\, Cu\, Zn\, Cd)\, redox-active elements (e.g. S\, Cr\, Mo\, I) and their isotopes; (2) microbial interactions and their impacts on biogeochemical cycles; (3) processes occurring in and around particle-associated microenvironments\, and (4) the physical drivers and variability of these processes. Studies assessing regional or global impacts with large/new datasets\, e.g. from international programs such as GEOTRACES\, and integrative approaches combining modeling\, field/laboratory measurements\, and/or microbial and molecular approaches are especially encouraged. \n\n\n\nPrimary Chair: David Janssen\, University of Bern. \n\n\n\nCo-chairs: Daniele Bianchi\, University of California Los Angeles; Thomas S Weber\, University of Rochester. \n\n\n\nCT003 – Chemical Speciation and Biogeochemistry in a Changing OceanSession ID#: CT003https://agu.confex.com/agu/osm20/prelim.cgi/Session/85778 \n\n\n\nSession Description: \n\n\n\nHow is seawater chemistry responding to global change processes\, and what are the consequences for marine ecosystems? How do advances in our understanding of chemical speciation give new mechanistic insight into biogeochemical processes? The thermodynamics of solution chemistry in addition to the distribution of trace metals and organic complexes along a gradient of particle sizes and ephemeral clusters are the focus of our session. Although solution thermodynamics is a relatively mature field\, there is an upsurge of research on both measurement and modelling of chemical speciation and an increasing focus on the assessment of uncertainties. This session will also explore interactions between solid and soluble species\, focusing on how recent developments examining the continuum between solid and dissolved (colloids\, nanoparticles\, etc.) alter our paradigm view of element cycling. The transport and reactivity of these ‘in-between’ species may differ from their fully dissolved or solid counterparts\, yet they are the most difficult to sample and observe. We invite submissions pertaining to the measurement and modelling of chemical speciation; assessment of modelling uncertainties; abiotic and biotic transformations from the solid to soluble phase and back again; reactions at the solid-solution interface; trace metal binding environments; sediment-seawater relationships; and interpretation of paleo records. \n\n\n\nPrimary Chair: David R Turner\, University of Gothenburg. \n\n\n\nCo-chairs: Veronique Oldham\, University of Delaware; Sylvia Sander\, IAEA; Emily R Estes\, WHOI. \n\n\n\nAutonomous observing systems for macronutrients and bioactive trace metals in coastal and open ocean settings: present status\, challenges and emerging technologiesSession ID#: IS003https://agu.confex.com/agu/osm20/prelim.cgi/Session/84800 \n\n\n\nSession Description: \n\n\n\nProgress and discovery in the understanding and modeling of biological productivity and species composition in the marine environment is limited by our ability to make macronutrient and bioactive trace metal measurements at relevant spatial and temporal scales. While significant progress has been made with the advent of UV and microfluidic nitrate sensors\, there are still few analytical systems for other important macronutrient species (P\, Si\, NH3) and virtually none for bioactive trace metals that can be deployed on the expanding array of platforms dedicated to long term unattended data gathering (i.e.\, moorings\, gliders\, profilers)\, particularly in oligotrophic surface ocean settings. \n\n\n\nThis session aims to: (1) highlight the latest developments in macronutrient and bioactive trace metal analytical methodologies with strong potential or demonstrated capabilities for unattended operation in coastal and open ocean settings and\, (2) serve as a forum to nurture collaborations among sensor developers and oceanographers with an engineering and analytical chemistry inclination. Contributions from all stages of development are encouraged including: remote samplers\, passive samplers\, reagent-based microfluidic analyzers including the use of novel chemical probes\, electrochemical methods\, optical sensors\, as well as the optimization\, calibration\, and field validation of emerging in situ technologies. \n\n\n\nPrimary Chair: Maxime Grand\, Moss Landing Marine Laboratories. \n\n\n\nCo-chairs: Andrew R Bowie\, University of Tasmania; Agathe Laes-Huon\, IFREMER; Alexander Beaton\, National Oceanography Center\, Soton. \n\n\n\nTowards BioGeoSCAPES: Exploring molecular drivers of ocean metabolism and biogeochemistrySession ID#: OB030https://agu.confex.com/agu/osm20/prelim.cgi/Session/84717 \n\n\n\nBioGeoSCAPES has been proposed as an idea for a new international coordinated research program to integrate knowledge on organism identity and physiology within frameworks of community ecology and global ocean biogeochemistry. It is envisioned that an improved\, predictive\, and quantitative understanding of ocean metabolism can be developed by combining detailed information on cell status\, biochemical processes\, and species interactions with intercalibrated measurements of nutrient fluxes and concentrations. We invite contributions describing research that can serve as inspiration for this nascent program. Appropriate abstracts could include: studies that integrate molecular and biogeochemical measurements\, including fluxes; research that places ‘omics observations (e.g.\, genomic\, transcriptomic\, proteomic\, metabolomic\, metallomic\, lipidomic\, etc.) within quantitative numerical modeling frameworks; or studies that scale from the cellular to the ecosystem level through integrated field measurements or mechanistic models of interactions. The aim of this session is to highlight research that combines informatics\, modeling\, and biogeochemical measurements across scales of time and space\, to test\, integrate\, connect\, and expand upon studies of ocean ecology and metabolism. \n\n\n\nPrimary Chair: Benjamin S Twining\, Bigelow Lab for Ocean Sciences. \n\n\n\nCo-chairs: Erin Marie Bertrand\, Dalhousie University; Martha Gledhill\, GEOMAR Helmholtz Centre for Ocean Research; Naomi Marcil Levine\, University of Southern California. \n\n\n\nThe role of micronutrient cycles in global-scale dynamicsSession ID#: CT010https://agu.confex.com/agu/osm20/prelim.cgi/Session/85400 \n\n\n\nSession Description: \n\n\n\nVia their fundamental control on ocean productivity and the biological carbon pump\, the cycling of nutrients plays an integral role in the dynamics of atmospheric CO2 and climate. In contrast to the ‘big three’- nitrogen\, phosphorus and silicon\, with their well characterised modern distributions and relatively stable inventories\, micronutrients\, such as iron\, remain relatively poorly observed and have the potential for rapid and profound changes in their inventories and biological availability in response to a host of poorly constrained processes. Micronutrients are currently the ‘wild card’ in both past and future carbon cycle and climate change\, prompting the need for improved understanding of their role in Earth system dynamics. We invite a broad range of submissions to provide insights into the pieces of the puzzle\, addressing boundary inputs and sinks\, exchanges between dissolved and solid phases\, interactions with organic compounds\, and their reciprocal interactions with microbial ecosystems. Submissions may include observations\, data synthesis or models\, and may address ocean nutrient cycling over a range of time-scales\, from past (paleo) through contemporary\, and/or in response to future global change. We particularly encourage new insights into the role of feedbacks and the role micronutrient cycles play in shaping global-scale dynamics. \n\n\n\nPrimary Chair: Andy Ridgwell\, University of California Riverside. \n\n\n\nCo-Chair: Alessandro Tagliabue\, University of Liverpool \n\n\n\nUnderstanding Rare Earth Element (REE) distributions and isotopic ratios and the mechanisms behind their use as tracers of (paleo)oceanic processesSession ID#: CT011https://agu.confex.com/agu/osm20/prelim.cgi/Session/84457 \n\n\n\nAnalytical advances have enabled a significant increase of environmental REE abundance and isotopic (e.g. Nd\, Ce) data. These elements are increasingly recognized as promising tracers for elucidating past and present natural and man-made processes in a variety of aquatic environments. However\, in spite of this growth in observations\, our understanding of the mechanisms\, capabilities and limitations of geochemical proxies based on REE abundances and isotopic ratios remains incomplete. We therefore invite presentations of field\, laboratory\, or modeling studies of REEs and related isotope systems aimed specifically at exploring mechanistic connections between their geochemical behavior and observed distributions in marine and terrestrial waters and sediments. Of particular interest are investigations linking REE abundance distributions to Nd or Ce isotopic ratios; validating the use of REEs as proxies of paleoceanographic processes; and addressing REE fractionation and source-to-sink transport on a global scale and at “geochemical hotspots” like estuaries\, hydrothermal vents\, nepheloid layers etc. Presentations that merely contribute TEI distribution data will be given lower priority. We especially encourage submissions from students and early-career scientists. \n\n\n\nPrimary Chair: Brian A Haley\, Oregon State University \n\n\n\nCo-chairs: Torben Stichel\, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven; Johan Schijf\, University of Maryland Center for Environmental Science; Vanessa Hatje\, Universidade Federal da Bahia.
URL:https://www.geotraces.org/event/2020-ocean-sciences-meeting/
LOCATION:San Diego Convention Center\, San Diego\, CA\, United States
CATEGORIES:GEOTRACES Relevant Special Sessions
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END:VCALENDAR