October 2022 - Issue #53
GEOTRACES Science Highlights
Trace metal quotas in small flagellates: diatoms are challenged!
Sofen and colleagues found that in natural plankton assemblages and in culture, small flagellates operated at the lower range of iron quotas.
A vivid picture of particle distribution and sources in the Arctic Ocean
Extensive description of particle concentrations and chlorophyll-a fluorescence distribution along Arctic GEOTRACES sections.
The Tonga arc, an iron boundary in the South West Pacific Ocean
As part of the TONGA GEOTRACES process study, Tilliette and colleagues identified high dissolved iron concentrations in the west of the Tonga arc.
Dominance of the benthic flux of rare earth elements on continental shelves
Deng and his colleagues focus on one of the largest land–ocean interfaces in Asia, the Changjiang River–East China Sea system.
Linear correlation between Dissolved Gaseous Mercury and Dissolved Inorganic Carbon opens new modelling perspectives
Živković and his colleagues led a close study of the mercury speciation along the 40°S GEOTRACES section.
Radium and barium tracers as bridges between GEOSECS and GEOTRACES programmes!
van Beek and his colleagues released radium-226 and barium data collected in the North Pacific in 2002.
Special Focus

Discover a video about the 3rd GEOTRACES Summer School!

Do not miss this video about the GEOTRACES Summer School!

The 3rd International GEOTRACES Summer School took place from the 10th to 15th July 2022 at the Alfred Wegener Institute Helmholtz-Centre for Polar and Marine Research (AWI) in Bremerhaven, Germany. It was organised by Walter Geibert and Claudia Hanfland. 48 students from 16 countries participated in it. Learn more about it.

2022 GEOTRACES Scientific Steering Committee held in person!
It was held in Southampton (UK) from 28th to 30th September 2022.
Japanese GEOTRACES cruises in the western North Pacific successfully completed
As a part of GEOTRACES section cruise GP22, two cruises have been completed.
Congratulations to Rob Middag!
He has been appointed honorary professor in Marine Trace Metal Biogeochemistry at the Groningen University.
GEOTRACES Informations



10 October - 19 December 2022, Island Impact Process Study (GApr17), Southern Ocean.

1 December 2022 - 25 January 2023, US GP17-OCE Section cruise (GP17), South Pacific and Southern Ocean.

27 January - 12 March 2023, CANYONS Process Study (GIpr11), Cape Darnley, East Antarctica.

20 February - 6 March 2023, STING Process Study (GApr18), Eastern Gulf of Mexico.


Upcoming GEOTRACES or GEOTRACES-related events:

9-12 January 2023, Sixth Xiamen Symposium On Marine Environmental Sciences (Xmas-VI), Xiamen, China. 

9-14 July 2023, Goldschmidt 2023, hybrid, Lyon (France) and online.

Access the GEOTRACES Calendar

Job Opportunities

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

Postdoctoral researcher, radiogenic and stable isotope geochemistry, GEOMAR, Germany
Post-doctoral research associate, submarine groundwater discharge, ODU, USA
Two Tenure-Track Faculty Positions in Chemical Oceanography, University of South Florida, USA
Postdoctoral position, Stellenbosch University, South Africa
Postdoc in Coral Ecophysiology, CSM, Monaco
Postdoctoral Fellow position at USGS and PCMSC, Santa Cruz, USA

Student Opportunities

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

Two PhD positions in geochemistry/paleoclimate at the ICBM, Oldenburg, Germany
PhD position on marine stable isotope geochemistry, University of Cologne, Germany

Latest Publications

-       Deng, K., Yang, S., Du, J., Lian, E., & Vance, D. (2022). Dominance of benthic flux of REEs on continental shelves: implications for oceanic budgets. Geochemical Perspectives Letters, 22, 26–30. doi: 10.7185/geochemlet.2223


-       Joyce, E. E., Balint, S. J., & Hastings, M. G. (2022). Isotopic Evidence That Alkyl Nitrates Are Important to Aerosol Nitrate Formation in the Equatorial Pacific. Geophysical Research Letters, 49(16). doi:10.1029/2022gl099960


-       Liu, T., Krisch, S., Xie, R. C., Hopwood, M. J., Dengler, M., & Achterberg, E. P. (2022). Sediment Release in the Benguela Upwelling System Dominates Trace Metal Input to the Shelf and Eastern South Atlantic Ocean. Global Biogeochemical Cycles, 36(9). doi: 10.1029/2022gb007466


-       Marsay, C. M., Landing, W. M., Umstead, D., Till, C. P., Freiberger, R., Fitzsimmons, J. N., Lanning, N. T., Shiller, A. M., Hatta, M., Chmiel, R., Saito, M., & Buck, C. S. (2022). Does Sea Spray Aerosol Contribute Significantly to Aerosol Trace Element Loading? A Case Study From the U.S. GEOTRACES Pacific Meridional Transect (GP15). Global Biogeochemical Cycles, 36(8). doi: 10.1029/2022gb007416


-       Rogalla, B., Allen, S. E., Colombo, M., Myers, P. G., & Orians, K. J. (2022). Sediments in Sea Ice Drive the Canada Basin Surface Mn Maximum: Insights From an Arctic Mn Ocean Model. Global Biogeochemical Cycles, 36(8). doi: 10.1029/2022gb007320


-       Smith, J. N., Smethie, W. M., & Casacuberta, N. (2022). Synoptic 129 I and CFC–SF 6 Transit Time Distribution (TTD) Sections Across the Central Arctic Ocean From the 2015 GEOTRACES Cruises. Journal of Geophysical Research: Oceans, 127(9). doi: 10.1029/2021jc018120



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-1840868) to the Scientific Committee on Oceanic Research (SCOR).”

GEOTRACES in Numbers

Cruises completed: 134
Section cruises completed: 47
Publications: 2145

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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