October 2023 - Issue #59
GEOTRACES Science Highlights
Using machine learning to accurately simulate the oceanic barium distribution
Mete and colleagues used machine learning to predict the global distribution of oceanic barium...
First direct measurement of actinium (but also radium and thorium) distribution coefficient values in marine sediments
Actinium-227, radium-226 and radium-228 profiles in sediments were measured and modeled at 5 stations in the Northeast Pacific...
Successful 2023 GEOTRACES Scientific Steering Committee held in California
Thank you very much to Karen Casciotti for hosting the meeting!
Completion of Japan-GEOTRACES section GP22 on the Western Pacific Ocean
Congratulations to Japan-GEOTRACES!
Intermediate Data Product **Reminder**
Timeline for next GEOTRACES Intermediate Data Product
First deadline is 15th May 2024!
Special Focus

The series of GEOTRACES Education videos is completed!

They are available on GEOTRACES YouTube and Youku channels

The videos aim at approaching the GEOTRACES international programme to the general public, as well as, providing a useful resource for teachers and an attractive method for students to learn about marine science.

Watch, use and share them!

GEOTRACES Informations



24 November 2023 - 28 January 2024, GP17-ANT (NBP24-01) Section Cruise (GP17-ANT), Southern Ocean. 

25 November 2023 - 3 March 2024, EASI-2 (PS140) Process Study (GIpr12), Southern Ocean. 

3 January - 2 March 2024, MISO (IN2024_V01) Section Cruise (GS04), Southern Ocean. 

17 January - 9 March 2024, PICCOLO (SD035) Process Study (GApr20), Southern Ocean.


Upcoming GEOTRACES or GEOTRACES-related events:

6 - 9 November 2023, International BioGeoSCAPES science planning workshop, Woods Hole USA and online.

18 - 24 February 2024, Ocean Sciences 2024, New Orleans, Lousiana, USA. View GEOTRACES Sessions.

18 - 23 August 2024, Goldschmidt 2024, in Chicago, USA. Submit a GEOTRACES session before 31 October 2023!


Access the GEOTRACES Calendar

Job Opportunities

Check the GEOTRACES website to view the latest job opportunities posted including:

Assistant Professorship in Oceans Stanford Doerr School of Sustainability

Latest Publications

-       Aflenzer, H., Hoffmann, L., Holmes, T., Wuttig, K., Genovese, C., & Bowie, A. R. (2023). Effect of dissolved iron (II) and temperature on growth of the Southern Ocean phytoplankton species Fragilariopsis cylindrus and Phaeocystis antarctica. Polar Biology, 46, 1163–1173. doi:10.1007/s00300-023-03191-z


-       Dulaquais, G., Fourrier, P., Guieu, C., Mahieu, L., Riso, R., Salaun, P., Tilliette, C., & Whitby, H. (2023). The role of humic-type ligands in the bioavailability and stabilization of dissolved iron in the Western Tropical South Pacific Ocean. Frontiers in Marine Science, 10. doi:10.3389/fmars.2023.1219594


-       Hawco, N. J., & Foreman, R. K. (2023). Expansion of Ocean Anoxia During Glacial Periods Recorded in the Cobalt Flux to Pelagic Sediments. Geophysical Research Letters, 50. doi:10.1029/2023gl105135


-      König, D., & Tagliabue, A. (2023). The fingerprint of climate variability on the surface ocean cycling of iron and its isotopes. Biogeosciences, 20, 4197–4212. doi:10.5194/bg-20-4197-2023


-       Liang, H., Moffett, J. W., & John, S. G. (2023). Toward a Better Understanding of the Global Ocean Copper Distribution and Speciation Through a Data‐Constrained Model. Global Biogeochemical Cycles, 37. doi:10.1029/2023gb007769


-       Liu, Z. B., Zhang, J., Jiang, S., & Su, H. (2023). Comparison between three preconcentration resins to determine dissolved gallium in natural waters using isotope dilution and high resolution inductively coupled plasma mass spectrometry. Talanta, 265, 124792. doi:10.1016/j.talanta.2023.124792


-     Tagliabue, A., Buck, K. N., Sofen, L. E., Twining, B. S., Aumont, O., Boyd, P. W., Caprara, S., Homoky, W. B., Johnson, R., König, D., Ohnemus, D. C., Sohst, B., & Sedwick, P. (2023). Authigenic mineral phases as a driver of the upper-ocean iron cycle. Nature, 620, 104–109. doi:10.1038/s41586-023-06210-5 

Access the GEOTRACES Publication Database

GEOTRACES Publication Best Practices

 ✓ Please include “GEOTRACES” in either the title, abstract or keywords of your GEOTRACES publications. 
 Intermediate Data Product (IDP) data contributors: Please use the DOoR portal to add any new publication of your data included in the IDP. 
 ✓ Plea
se help us to acknowledge support from SCOR in your publications as follows
“The International GEOTRACES Programme is possible in part thanks to the support from the U.S. National Science Foundation (Grant OCE-2140395) to the Scientific Committee on Oceanic Research (SCOR).”

GEOTRACES in Numbers

Cruises completed: 148
Section cruises completed: 50
Publications: 2207

Send Your Announcements to the GEOTRACES International Project Office
Do you have an announcement (job or student opportunity, event) that you would like to see published on the GEOTRACES eNEwsletter?  Contact us at ipo@geotraces.org

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