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April 2026 - Issue #74
SCIENCE HIGHLIGHTS
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Do not mourn Nobias any longer: InertSep ME-2 is coming!
Thanks to the thorough development proposed by Alifia and co-workers, the community may have a solution to the shortage of Nobias Chelate PA-1...
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Long-range transport of iron off the Antarctic Peninsula
Tian and co-authors investigate dissolved iron concentrations and isotope compositions in the western Weddell Sea...
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Seasonal variation of the dissolved iron ligands in the South Atlantic sector of the Southern Ocean
In the ocean, up to 99% of the dissolved iron is strongly complexed with organic compounds known as iron-binding ligands...
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Tracing the origin of iron in the equatorial Pacific: an isotopic study
The equatorial Pacific Ocean is a region of contrasts: in the west, rivers and sediments supply large amounts of iron, while in the east, iron deficiency limits the growth of phytoplankton...
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Comprehensive inverse model constrains the application of beryllium-7 as a deposition tracer
Measurements of beryllium-7 activity in surface waters provide a promising approach for quantifying the deposition of aerosol-bound elements at the ocean surface...
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When cadmium faces the Black Sea contrasting environment
Dickson and his colleagues investigated the fate of cadmium in the Black Sea using its concentration and isotopic composition...
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Lead isotopes reveal that hydrothermal variability is driven by Sea‐Level change and transient magmatism
De and colleagues present the first millennial-scale reconstruction of hydrothermal variability at a mid-ocean ridge using lead isotopes from iron-manganese coatings...
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GEOTRACES NEWS
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Launch: GEOTRACES Online Seminar Series 2026
Join us on April 28, 2026 @ 15:00 CEST for the first seminar!
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Timeline for next GEOTRACES Intermediate Data Products
First deadline is 15th May 2027!
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GEOTRACES highlights from Ocean Sciences Meeting 2026
GEOTRACES sessions, posters, data demonstrations, networking and more!
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Call for Applications: Early-Career Scientist Position on the SCOR Executive Committee
Apply by 8 May 2026.
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Clean Oceans Journal Collection on Climate Change Impacts on Marine Contaminants – Open for Submissions
Submission deadline is 30 October 2026.
Read more...
GEOTRACES INFORMATIONS
Dates

Cruises

1 – 30 June 2026, GEOTRACES Section cruise GP08, Pacific Ocean.

8 December 2026 - 9 January 2027, EXPAND, Process Study GIpr14, Indian Ocean subtropical gyre.

16 January – 13 March 2027, MISO-2, GEOTRACES, Section cruise GS06, Southern Ocean.

 

Complete list of forthcoming cruises

 

Events

28 April 2026 - 15h CEST,  Launch: GEOTRACES Online Seminar Series, Seminar #1 "Data synthesis, modelling & integration".

3 - 8 May 2026, EGU 2026, Vienna, Austria & Online. Check the GEOTRACES sessions. 

26 May 2026 - 15h CEST,  GEOTRACES Online Monthly Seminar, Seminar #2 "Trace metal input in polar environments".

30 June 2026 - 15h CEST, GEOTRACES Online Monthly Seminar, Seminar #3 "Atmospheric aerosol deposition to the global ocean".

12 - 17 July 2026, Goldschmidt 2026, Montreal, Quebec, Canada. 

19 - 20 October 2026, GEOTRACES Data Management Committee Annual Meeting, Xiamen, China.

21 - 23 October 2026, GEOTRACES Scientific Steering Committee Annual Meeting, Xiamen, China.


Access the GEOTRACES calendar

GEOTRACES in Numbers

Cruises completed: 175
Section cruises completed: 54
Publications: 2765

Job/Student/Funding
Opportunities


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

Jobs

Call for Applications: Early-Career Scientist Position on the SCOR Executive Committee
Apply by 8 May 2026.
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PhD & Postdoctoral Positions in Earth Sciences, The Hebrew University of Jerusalem, Israel
HUJI invites applications for PhD candidates and postdoctoral researchers.
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Funding Opportunities

POGO-SCOR Fellowship Programme 2026
Deadline for applications is 1st May 2026 (23:59 UTC).
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Latest Publications

 

-      Gledhill, M., Gosnell, K., Humphreys, M. P., Delaigue, L., Helle, N., Zhu, K., Lodeiro, P., Rey-Castro, C., & Achterberg, E. P. (2026). Chemical controls on iron distributions across the subsurface South Pacific Ocean. Nature Communications, 17. doi:10.1038/s41467-026-72070-y

-      Chance, R., Shelley, R. U., & Baker, A. R. (2026). Southern South American Dust Inputs to the South Atlantic and Southern Oceans: Trace Element Solubility and Deposition Fluxes. Global Biogeochemical Cycles, 40. doi:10.1029/2025gb00901

-      Meng, J.-S., & Wang, W.-L. (2026). Modeling of 231Pa cycle and its implications on particle scavenging in the global ocean. Geochimica et Cosmochimica Acta, 414, 247–258. doi:10.1016/j.gca.2025.11.046

-       Yang, C., Zhang, K., Chen, M., Zhang, N., Cao, Z., Cai, Y., Dai, M., & Zhou, K. (2026). Depth profiles of dissolved and particulate lead indicate reversible scavenging in deep waters of the West Subtropical Pacific. Earth and Planetary Science Letters, 681, 119914. doi:10.1016/j.epsl.2026.119914

 

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.
To facilitate future synthesis activities (and database searches), we strongly encourage you to select in the DOoR form (dropdown menu) the process your publications address.

 ✓ Please 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-
OCE-2513154) to the Scientific Committee on Oceanic Research (SCOR).”

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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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