August 2021 - Issue #46
GEOTRACES Science Highlights
A new proxy for ocean iron bioavailability
The approach established and verified in this study, opens a new way for determining dissolved iron bioavailability in samples across the ocean.
Scavenging differentiates the distribution of cadmium, nickel, zinc and copper in the North Pacific Ocean
Zheng and co-authors observed sectional distributions of cadmium, nickel, zinc, and copper in the North Pacific Ocean during three GEOTRACES related cruises...
Surprising conservativity of trace metals along a costal embayment salinity gradient
Chen and co-workers analyzed an array of trace metals together with Rare Earth Elements in a salinity gradient in the Jinhae Bay, the largest semi-enclosed bay in South Korea...
Measuring actinium-227 by mass spectrometry is feasible, sensitive and reliable!
Levier and co-authors have developed a new protocol measurement of the dissolved actinium in seawater.
Pros and cons of carbon, nitrogen and silicon as tracers of modern and paleo-productivity
Farmer and colleagues review the geochemical proxies based upon sedimentary isotope ratios of three abundant biologically mediated elements.
Pros and cons of nine bioactive trace elements as tracers of modern and paleo-productivity
Horner and co-authors assess whether nine bioactive trace metals and their isotopes can be used as paleo-productivity proxies.
Controls of cadmium-phosphate systematic unraveled by Neural Networks and Ocean Circulation Inverse Model
Roshan and DeVries explore the similarities and contrasts between oceanic cadmium and phosphate cycles using an Artificial Neural Network mapping technique and Ocean Circulation Inverse Model.
Retreat of large marine-terminating glaciers may increase iron supply to surface waters
The findings demonstrate that glacial retreat and loss of ice-shelves may potentially result in increases in dissolved iron supply to surface waters downstream of large marine terminating glaciers in future.
In memory of Dr. Chibo Chikwililwa
It is with deep sadness that we inform you of the passing of Dr. Chibo Chikiwililwa on 23 June 2021.
New GEOTRACES video: Examining our Oceans!
View the video and share it broadly!
Goldschmidt 2022 - Call for GEOTRACES session proposals
Submit a session proposal before 30 September 2021.
GEOTRACES sessions at Ocean Sciences 2022
Submit an abstract before 15 September 2021!
Promotional access to special issue - Cycles of trace elements and isotopes in the ocean – GEOTRACES and beyond
This issue is free to view until 31 December 2021!
GEOTRACES Informations


Upcoming GEOTRACES or GEOTRACES-related events:

29 September - 1 October 2021, GEOTRACES Scientific Steering Committee, virtual meeting.

9-10 November 2021, Blowing South: Southern Hemisphere Dust Symposium, virtual meeting. Submit an abstract before 7 September 2021!

13-17 December 2021, AGU Fall Meeting 2021, New Orleans, LA and on-line. Check the GEOTRACES session. 

27 February - 4 March 2022, Ocean Sciences Meeting 2022, Honolulu, Hawaii and on-line. Check the GEOTRACES sessions. Submit an abstract before 15 September 2021!


Access the GEOTRACES Calendar


Job Opportunities

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

PhD and Postdoc positions, Hebrew University & Interuniversity Institute for Marine Sciences, Israel

PhD position in Mediterranean Mercury Modeling, LSCE and MIO, France

HBOI Postdoctoral Fellow Biogeochemistry, Florida Atlantic University, USA

ICP-MS Analyst (Technician), Pacific Northwest National Laboratory, Sequim, WA, USA.

Assistant Professor of Oceanography, Texas A&M University, USA

Postdoctoral Research Associate – Marine Chemistry at The University of Southern Mississippi, USA



Latest Publications

- Bam, W., Maiti, K., & Baskaran, M. (2021). 210Po and 210Pb as Tracers of Particle Cycling and Export in the Western Arctic Ocean. Frontiers in Marine Science, 8, 1041.

- Baskaran, M., & Krupp, K. (2021). Novel Application of 210Po-210Pb Disequilibria to Date Snow, Melt Pond, Ice Core, and Ice-Rafted Sediments in the Arctic Ocean. Frontiers in Marine Science, 8, 892.

-  Garcia-Orellana, J., Rodellas, V., Tamborski, J., Diego-Feliu, M., van Beek, P., Weinstein, Y., Charette, M., Alorda-Kleinglass, A., Michael, H.A., Stieglitz, T., Scholten, J. (2021). Radium isotopes as submarine groundwater discharge (SGD) tracers: Review and recommendations. Earth-Science Reviews, 220, 103681.

-  Jiang, S., Zhang, J., Zhou, H., Xue, Y., & Zheng, W. (2021). Concentration of dissolved lead in the upper Northwestern Pacific Ocean. Chemical Geology, 577, 120275.

-  Somes, C. J., Dale, A. W., Wallmann, K., Scholz, F., Yao, W., Oschlies, A., Muglia, J., Schmittner, A., Achterberg, E. P. (2021). Constraining Global Marine Iron Sources and Ligand‐Mediated Scavenging Fluxes With GEOTRACES Dissolved Iron Measurements in an Ocean Biogeochemical Model. Global Biogeochemical Cycles, 35(8), e2021GB006948.

-  Wang, Z., Xuan, J., Li, F., Ren, J., Huang, D., & Zhang, J. (2021). Monsoon‐Facilitated Off‐Shelf Transport of Dissolved Aluminum Across the East China Sea During Summer. Journal of Geophysical Research: Oceans, 126(6).

-  Wong, K. H., Obata, H., Ikhsani, I. Y., & Muhammad, R. (2021). Controls on the Distributions of Dissolved Cd, Cu, Zn, and Cu‐Binding Organic Ligands in the East China Sea. Journal of Geophysical Research: Oceans, 126(6), e2020JC016997.


Access the GEOTRACES Publication Database

GEOTRACES in Numbers

Cruises completed: 126
Section cruises completed: 42
Publications: 1625

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