Upcoming Events
GEOTRACES Online Seminar Series 2026 April–November 2026 | Monthly | Online (Zoom) More information and updates
A monthly seminar series led by the GEOTRACES Early Career Scientist (ECS) Committee, featuring paired talks by a senior scientist and an early career researcher on shared themes in trace element and isotope biogeochemistry. Seminars run the last Tuesday of each month (with a break in July) at 09:00 or 15:00 CEST. No registration required. Recordings posted on the GEOTRACES YouTube Channel.
Upcoming seminars:
30 June 2026 @ 15:00 CEST - Atmospheric aerosol deposition to the global ocean Speakers: Clifton Buck (University of Georgia) & Prema Piyusha Panda (Stellenbosch University)
For Zoom link information and updates, check the seminar web page.
Past seminars:
28 April 2026 @ 15:00 CEST — Data synthesis, modelling & integration. Highlights
26 May 2026 @ 15:00 CEST - Trace metal input in polar environments. Highlights
U.S. GEOTRACES Scientific Steering Committee (SSC) Meeting 22–23 June 2026 | Alexandria, Virginia
GP17-ANT Data Synthesis Workshop 24–26 June 2026 | Old Dominion University, Norfolk, Virginia
2026 Call for Applications — GEOTRACES Early Career Scientist Committee
GEOTRACES is recruiting 7 early career scientists to join its Early Career Scientist (ECS) Committee. Members contribute to early career activities including online seminars and conference sessions, meeting virtually every two months for a two-year term.
Requirements: PhD completed, no more than 10 years post-PhD (career interruptions not counted). Candidates from developing countries and underrepresented backgrounds are encouraged to apply.
To apply: Complete the application form, and submit a short CV (max 3 pages) and one reference letter. An Excel version of the form is also available.
Deadline: July 3, 2026
For questions contact the ECS co-chairs or the GEOTRACES IPO at [email protected]. Download the full call (PDF)
Goldschmidt 2026 12–17 July 2026 | Montréal, Québec, Canada & Online
Registration and event details
GEOTRACES relevant sessions:
12c: The Role of Boundaries Across Scales in Shaping Marine Trace Element Distributions Conveners: Zhouling Zhang (GEOMAR), Kassandra M Costa (WHOI), Nolwenn Lemaitre (LEGOS), Ryan Cloete (Stellenbosch University), Anh Le-Duy Pham (UCLA), Wen-Hsuan Liao (National Cheng Kung University), Kai Deng (Tongji University), Frank Pavia (University of Washington), Jennifer L Middleton (LDEO)
09k: Integrating Biological and Geochemical Perspectives on Trace Metal(loid) Transformations Across Ecosystems Conveners: Matthew Reid (Cornell University), Tim M. Conway (University of South Florida), Jacqueline Gerson (Cornell University), Phoebe Lam (UC Santa Cruz), Alexandre Poulain (University of Ottawa), Yeala Shaked (Hebrew University)
XMAS2027 — GEOTRACES Session and Workshop 12–15 January 2027 | Xiamen, China
Two GEOTRACES-related sessions at the Xiamen Marine and Atmospheric Sciences (XMAS2027) meeting:
- Trace metal biogeochemical cycles in the ocean — A session on sources, sinks, speciation, and biological utilization of trace metals in marine systems. Interdisciplinary submissions and inter-regional comparisons are especially welcome.
- A GEOTRACES synthesis workshop: Building data outcomes for the Pacific Ocean and its marginal seas — A workshop focused on synthesizing GEOTRACES data, with invited talks, open discussion, and networking opportunities.
Abstract submission deadline: 30 June 2026
Conference website and details
Opportunities
Timeline for Next GEOTRACES Intermediate Data Products (IDP2028 and IDP2031) April 2026
The GEOTRACES Data Management Committee has announced the planned timeline for the next two data products, to be released tentatively in 2028 and 2031. Check the full timeline
IDP2028:
- First deadline: 15 May 2027
- Final deadline: 15 December 2027
- Release: November 2028
IDP2031:
- First deadline: 15 May 2030
- Final deadline: 15 December 2030
- Release: November 2031
To contribute your data:
- Register your dataset(s) via the DOoR portal
- Submit your data to the GEOTRACES Data Assembly Center (GDAC) or your national data centre
- Submit a complete intercalibration report to the S&I Committee via DOoR. Example report
- Give permission for your data to be included via the DOoR portal
Check the IDP Flowchart to make sure your data are included!
GP17-OCE: AGU Special Collection of Papers September 2025 — submissions open for 2 years
AGU has approved a special collection for the GP17-OCE section. Global Biogeochemical Cycles is the lead journal; submissions are also welcome in Geophysical Research Letters, JGR-Oceans, and Earth and Space Sciences. The call for submissions is open for 2 years. AGU encourages use of the ESS Open Archive preprint server for manuscripts referencing each other. All published papers will be linked together, as done for GP15.
For questions contact Ben Twining ([email protected]) or Jessica Fitzsimmons ([email protected]), associate editors for GBC submissions.
GEOTRACES Student and Early Career Scientist Mailing List
The GEOTRACES Early Career Scientist (ECS) Committee is creating a mailing list of GEOTRACES students (Master and PhD) and Early Career Scientists (within 10 years of PhD completion, not counting career interruptions) to foster collaborations and promote activities within the GEOTRACES community. Register here and share with your colleagues!
WHOI Archived Water Samples
Woods Hole Oceanographic Institution has 750 large-volume (50L) open ocean water samples available, collected mostly between 1962 and 1987. Samples are unfiltered, unacidified, and stored in black plastic barrels. Only whole barrels are available; no subsampling. Contact Jessica Drysdale ([email protected]) for availability. Cost: $25 handling plus shipping, with acknowledgement in published results. View sample locations map | Download sample information
GEOTRACES Sampling and Sample-handling Protocols (Cookbook v4.0, 2024)
An updated version of the GEOTRACES Cookbook (v4.0, 2024) is now available. Updates include a general revision of all sections and new sections on data submission, metadata acquisition, and the DOoR portal.
Jobs, Student and Funding Opportunities
- Postdoctoral Fellowship in Arctic Trace Metal Biogeochemistry Aquatic Geochemistry Group, Université Laval / University of Victoria, Canada. 2-year fellowship studying trace metal and metalloid cycling in the high Arctic Ocean within the GEOTRACES REFUGE Arctic framework. Requires PhD in marine/aquatic geochemistry or related field and experience with trace-clean techniques and ICP-MS. Send application to [email protected]. Position open until filled. More information
- Postdoctoral Position — Southern University of Science and Technology, China 2-year postdoc in marine biogeochemistry (trace metals, nutrients, carbonate chemistry). Projects in Guangdong, Greenland, and Chile. Competitive salary, travel allowance, and flexible working options. Contact: Mark Hopwood ([email protected]). Position open until filled. More information
- PhD & Postdoctoral Positions in Earth Sciences, The Hebrew University of Jerusalem, Israel. Browse faculty and research interests here.
- For additional opportunities, visit our Jobs & Opportunities page.
Past Announcements
Early-Career Scientist position on the SCOR Executive Committee — Deadline: 8 May 2026. Application instructions
POGO-SCOR Fellowship Programme 2026 The Partnership for Observation of the Global Ocean (POGO) and the Scientific Committee on Oceanic Research (SCOR) are accepting applications for their 2026 Fellowship Programme. Open to early-career scientists, technicians, and postgraduate/postdoctoral researchers from developing countries, the fellowship supports 1–3 month visits to leading oceanographic institutions, covering travel and accommodation costs. Priority topics include ocean observation technologies, biogeochemical sensors, data management, and biodiversity. Deadline: May 1, 2026. More information and application
2026 Call for SCOR Working Groups — Deadline: 10 April 2026.
EGU General Assembly 2026 3–8 May 2026 | Vienna, Austria & Online Event details | Registration Abstract submission deadline: 15 January 2026, 13:00 CET | Submission instructions
GEOTRACES relevant session: OS2.6: Chemical Processes in Coastal Oceans: Natural and Anthropogenic impacts on the biogeochemical processes Conveners: Aridane González González, David González-Santana, Melchor Gonzalez-Davila, J. Magdalena Santana-Casiano Submit abstract to OS2.6
Ocean Sciences Meeting 2026 22–27 February 2026 | Glasgow, Scotland & Online Event details
GEOTRACES related sessions:
OB44F: Multitracer Approaches to Understanding and Quantifying Marine Biogeochemical Processes I (Poster) — Thursday, 26 February
OB51B: Multitracer Approaches to Understanding and Quantifying Marine Biogeochemical Processes II (Oral) — Friday, 27 February Conveners: William M. Landing (Florida State University), Hélène Planquette (IUEM/LEMAR/CNRS), Anne Leal (LDEO, Columbia University)
OB51B: Multitracer Approaches to Understanding and Quantifying Marine Biogeochemical Processes III (Oral) — Friday, 27 February
CB31A/CB34A: Coastal, Shelf, and Island Mass Effects on Trace Element Biogeochemistry (eLightning + Poster) — Wednesday, 25 February Conveners: David González-Santana, Aridane G. González (IOCAG), Emilie Le Roy, Gabriel Dulaquais (IUEM)
HE24C: Mercury in Polar Waters: Sources, Transformations, and Bioaccumulation (Poster) — Tuesday, 24 February Conveners: Emily Seelen (University of Alaska Fairbanks), Marissa Despins (UC Santa Cruz), Stephen Kohler (NTNU)
OB14H: Revising Ocean Silicon Cycle: Pathways, Stoichiometry and Climate-Carbon Feedback (Poster) — Monday, 23 February Conveners: Diksha Sharma, Haimanti Biswas (CSIR-NIO), Damien Cardinal (Sorbonne Université), Shaily Rahman (University of Colorado Boulder)
2025 AGU Meeting 5–19 December 2025 | New Orleans, Louisiana Abstract submission deadline: 30 July 2025
GEOTRACES relevant sessions:
OS019: Physical and Biogeochemical Processes on the Warm Antarctic Continental Shelves Conveners: Madeline Mamer (Georgia Institute of Technology), Kiya Riverman (University of Portland), Peter Sedwick (Old Dominion University), Robert Sherrell (Rutgers University), Andrew Thompson (Caltech)
B018: Atmospheric Exchange of Aerosol and Gases Across the Air-Sea Interface Conveners: Douglas Hamilton, Nicholas Meskhidze
GEOTRACES Intermediate Data Product 2025 (IDP2025) November 2025
The GEOTRACES Intermediate Data Product 2025 (IDP2025) was launched on November 20, 2025. Webinars were held on November 20 (13:15–14:45 UTC) and November 25 (05:00–06:30 UTC). View full event recording.
The IDP2025 offers extensive hydrographic and marine geochemical data from research cruises across all ocean basins, including a digital data package and an eGEOTRACES Atlas for visualizing data through section plots and 3D animations. The webODV tool provides online data extraction, analysis, and visualization services.
Additional resources:
- Webinar: GEOTRACES Intermediate Data Product — What does it include and how can it be accessed?
- Webinar: Linking Multi-Disciplinary Data with webODV
GEOTRACES Summer School 2025 17–21 November 2025 | Cape Town, South Africa
The GEOTRACES Summer School 2025 provided training in marine biogeochemistry of trace elements and their isotopes for 36 students, featuring lectures, practical sessions, and fieldwork led by 15 international experts from the GEOTRACES community.
Supported by the French National Centre for Scientific Research (CNRS) and the Scientific Committee on Oceanic Research (SCOR).
GEOTRACES Intermediate Data Product 2025 (IDP2025) November 2025
We are excited to announce the launch of the GEOTRACES Intermediate Data Product 2025 (IDP2025). Join the webinar launch at one of the following times:
- 20 November 2025 at 13:15–14:45 UTC
- 25 November 2025 at 05:00–06:30 UTC
Register for the events | Deadline to register: 17 November 2025
IDP2025
Thank you to all who have contributed data for the IDP2025. The release of the IDP2025 is planned for November 2025.
The GEOTRACES DOoR portal continues to be open and accepts submissions. Datasets received after the final deadline of 15 December 2024 will be processed for inclusion in a next IDP.
To contribute your data:
- Register your dataset(s) via the DOoR portal
- Submit your data using the data and metadata templates to the GEOTRACES Data Assembly Center (GDAC) or your national data centre
- Submit a complete intercalibration report to the S&I Committee via the DOoR portal. Example report
- Give permission for your data to be included in IDP via the DOoR Portal
Check the IDP Flowchart to make sure your data are included!
International GEOTRACES Meetings October 2025 | Goa, India
- State Estimate Committee — October 11–12, 2025
- Data Management Committee — October 13–14, 2025
- Scientific Steering Committee — October 15–17, 2025
Chemical Oceanography Gordon Research Conference 20–25 July 2025 | Southern New Hampshire University, Manchester, NH Application deadline: 22 June 2025 Conference details
The GRC focuses on cutting-edge unpublished research with extended discussion time and daily poster sessions covering all topics in chemical oceanography. Registration fee: $1,350 (includes room and board for 5 days).
A 2-day Gordon Research Seminar (GRS) for graduate students and postdocs precedes the main conference.
Chair: Phoebe Lam | Vice-chair: Jay Cullen GRS Co-chairs: Julien Middleton, Gabriella Akpah Yeboah
GEOTRACES Sessions at Goldschmidt 2025 6–11 July 2025 | Prague, Czech Republic Abstract submission deadline: 26 February 2025 Conference details | Submit abstract
GEOTRACES relevant sessions:
12a: Elemental Enigmas: Cracking the Code of Trace Metals in Polar Oceans Conveners: Hung-An Tian (AWI), Saša Marcinek (Ruder Boskovic Institute), Rhiannon Jones (British Antarctic Survey)
12e: Tracing marine trace element dynamics: impact of external sources and oceanic cycling Conveners: Kai Deng (Tongji University), Vineet Goswami (Physical Research Laboratory), Antao Xu (Heidelberg University), Sunil Singh (CSIR-NIO)
12g: Seafloor hydrothermal processes and their impacts on the modern and ancient Earth Conveners: Benjamin M. Tutolo (University of Calgary), Wenhao Wang (Sun Yat-sen University), Drew Syverson (UNC Charlotte) Keynote: John Jamieson (Memorial University of Newfoundland)
13f: Geochemical proxy development for paleoceanographic and paleoclimatic research Conveners: Jun Shen (China University of Geosciences), Thomas J. Algeo (University of Cincinnati), David J. Janssen (Eawag), Sylvie Bruggmann (University of Lausanne) Keynote: Zunli Lu (Syracuse University)
GEOTRACES Synthesis Preparation Workshop 3–4 July 2025 | Hanse-Wissenschaftskolleg (HWK), Delmenhorst, Germany & Online Pre-registration deadline: 15 May 2025 Workshop details and pre-registration
A hybrid workshop to prepare GEOTRACES synthesis activities and explore funding opportunities and partner networks, held back-to-back with Goldschmidt 2025 in Prague. Participants could attend in person (25 places) or online (30 places).
Ocean Carbon & Biogeochemistry (OCB) Workshop 2025 2–6 June 2025 | Virtual Learn more
GEOTRACES Early Career Scientist (ECS) Committee Application deadline: 15 June 2025
GEOTRACES is recruiting seven early career professionals for its Early Career Scientist (ECS) Committee, established in August 2024 and currently comprising 15 members.
EGU General Assembly 2025: April 27-May 2, 2025, Vienna, Austria & Online. Deadline to submit an abstract is 15 Jan 2025, 13:00 CET. More information.
U.S. GEOTRACES Newsletter — Spring 2025 May 2025
The Spring 2025 U.S. GEOTRACES Newsletter is now available. It includes important news for investigators who have submitted data to a repository (BCO-DMO or GDAC) but have not yet submitted their intercalibration report through the DOoR portal. The S&I Committee's final meeting before IDP2025 production is on June 12, 2025.
Data Workshop GP17-OCE 10–12 March 2025 | Texas A&M University, College Station, TX
GEOTRACES Standards and Intercalibration (S&I) Committee Meeting 3–7 March 2025 | Alaska (in-person)
Future U.S. Icebreakers — Community Survey Deadline: 7 February 2025
The UNOLS Arctic Marine Research Capabilities Committee (AMRCC) is collecting community input on future U.S. icebreakers for Arctic marine and interdisciplinary science. Complete the survey | UNOLS AMRCC information
For questions contact Laura Whitmore ([email protected]).
GEOTRACES Intermediate Data Product 2025 (IDP2025) — Final Submission Deadline December 2024
The final submission deadline for IDP2025 is 15 December 2024. Check timeline
To contribute your data:
- Register your dataset(s) via the DOoR portal
- Submit your data using the data and metadata templates to the GEOTRACES Data Assembly Center (GDAC) or your national data centre
- Submit a complete intercalibration report to the S&I Committee via the DOoR portal. Example report
- Give permission for your data to be included in IDP via the DOoR portal
Check the IDP Flowchart to make sure your data are included!
AGU 2024 Annual Meeting 9–13 December 2024 | Washington, DC Event details
GEOTRACES related sessions:
OS23H: Trace Element Distribution and Cycling Across Ocean Basins III (Oral) — Tuesday, 10 December
OS21H: Trace Element Distribution and Cycling Across Ocean Basins I (Poster) — Tuesday, 10 December
OS21I: Trace Element Distribution and Cycling Across Ocean Basins II (Poster) — Tuesday, 10 December
OS44B: Disentangling Hydrothermal Impacts on Ocean Biogeochemistry II (Oral) — Thursday, 12 December
OS41H: Disentangling Hydrothermal Impacts on Ocean Biogeochemistry I (Poster) — Thursday, 12 December
Faculty Positions in Chemical Oceanography
- Columbia University — Tenure-track Assistant Professor, Department of Earth and Environmental Sciences. Apply here. Review begins November 4, 2024.
- Florida State University — Assistant Professor, Department of Earth, Ocean and Atmospheric Science. Apply here (job opening #58754). Review begins November 15, 2024.
- University of South Florida — Tenure-Track Faculty Position in Chemical Oceanography. Deadline: January 3, 2025. Read more
2024 SCOR Annual Meeting 15–18 October 2024 | Qingdao, China (with virtual participation option) Pre-Meeting Symposium: October 15 More information
GEOTRACES Scientific Steering Committee (SSC) Meeting 18–20 September 2024 | Texel, The Netherlands Logistical information
GEOTRACES Data Management Committee (DMC) Meeting 16–17 September 2024 | Texel, The Netherlands Logistical information
GEOTRACES Standards and Intercalibration (S&I) Committee Meeting 20 August 2024 | Virtual
Goldschmidt Conference 2024 18–23 August 2024 | Chicago, Illinois (Hybrid) Conference details
U.S. GEOTRACES Scientific Steering Committee (SSC) Meeting 20–21 June 2024 | The Westin Alexandria Old Town, Alexandria, VA
OCB Summer Science Workshop 2024 10–13 June 2024 | Woods Hole, MA (In person & Virtual) More information
GEOTRACES Intermediate Data Product 2025 (IDP2025) — Guaranteed Inclusion Deadline May 2024
The deadline for guaranteed inclusion in IDP2025 is 15 May 2024. Check timeline
To contribute your data:
- Register your dataset(s) via the DOoR portal
- Submit your data using the data and metadata templates to the GEOTRACES Data Assembly Center (GDAC) or your national data centre
- Submit a complete intercalibration report to the S&I Committee via the DOoR portal. Example report
- Give permission for your data to be included in IDP via the DOoR portal
Check the IDP Flowchart to make sure your data are included!
Town Hall Meeting on Margin Processes — Ocean Sciences Meeting 2024 19 February 2024 | New Orleans, Louisiana 12:45–13:45 | Room 220-222, Second Floor (NOLACC) Session details
A town hall meeting to bring together geochemists, biologists, physical oceanographers and modelers to discuss common problems in margin processes, particularly in carbon, nitrogen and iron cycling. Arising from conversations within the GEOTRACES community and the Benthic Ecosystem and Carbon Synthesis (BECS) Working Group.
Contact: Jim Moffett ([email protected])
U.S. GEOTRACES Cruise GP17-ANT (NBP24-01) Completed January 2024
The R/V Nathaniel B. Palmer arrived in Lyttelton, New Zealand on January 28, 2024, completing science operations for the U.S. GEOTRACES cruise GP17-ANT. The nearly two-month cruise was largely successful, sampling 21 stations over the Amundsen Sea continental shelf, 3 stations over the continental slope, and 3 off-shelf stations including one deep-ocean crossover station with the preceding GP17-OCE cruise.
All stations included near-surface towfish, conventional CTD-rosette, trace-metal clean CTD-rosette, and McLane in-situ pump sampling. Additional sampling included aerosols, precipitation, sea ice, snow, sediment cores for pore-fluid extraction, and high-volume pumped seawater for radium isotopes and beryllium-7. Heavy sea ice prevented access to some planned stations including the Thwaites Ice Shelf and Pine Island Bay. Samples were collected from 23 separate science projects with support from the U.S. National Science Foundation.
U.S. GEOTRACES Expedition GP17-ANT Underway November 2023
The U.S. GEOTRACES expedition GP17-ANT (NBP2401) departed Punta Arenas, Chile on November 29, 2023 aboard the R/V Nathaniel B. Palmer, with a team of 35 scientists led by Peter Sedwick (Old Dominion University), Phoebe Lam (University of California, Santa Cruz), and Robert Sherrell (Rutgers University).
The cruise will complete the South Pacific GP17 section initiated with GP17-OCE (December 2022 – January 2023), sampling coastal and shelf waters of Antarctica's Amundsen Sea. The cruise is supported by the U.S. National Science Foundation.
GEOTRACES Intermediate Data Product 2021 (IDP2021) 2024
Version 2 of the IDP2021 is now available!
Timeline for Next GEOTRACES Intermediate Data Product (IDP2025) 2024
The first deadline for dataset submission is 15 May 2024. More information
GEOTRACES Education Channel (GTEd) 2024
The GEOTRACES Education Channel (GTEd) offers short videos about the GEOTRACES program, its fieldwork, and trace elements in the ocean. Videos are available on the GEOTRACES YouTube and Youku channels.
U.S. GEOTRACES Project Office Newsletter
The U.S. GEOTRACES Project Office distributes a quarterly newsletter. Subscribe and view past issues.
Ocean Sciences Meeting 2024 18–23 February 2024 | New Orleans, Louisiana Meeting information | GEOTRACES related sessions
AGU Annual Meeting 2023 11–15 December 2023 | Moscone Center, San Francisco, California & Online Meeting information | Program & Schedule
Future Directions for Southern Ocean and Antarctic Coastal Research December 2023
The National Academies released a report on Future Directions for Southern Ocean and Antarctic Coastal Research, timed with the sailing of the U.S. GEOTRACES GP17-ANT expedition. The authoring committee held an AGU Town Hall on December 14, 2023 at the Moscone Center. A recorded presentation by the authoring committee is also available.
Advances in Marine Biogeochemistry: Celebrating the Career of Bob Anderson 23–25 July 2023 | Lamont-Doherty Earth Observatory, Palisades, NY More information
Funding and Support
