GEOTRACES Science Highlights
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– A review constituting the half-way mark of GEOTRACES
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After a brief reminder on the motivation and foundation processes of the international and ambitious programme GEOTRACES, Bob Anderson proposes an overview oabout-us/geotraces-policies/geotraces-best-practicesf many results of GEOTRACES activities related to the three guiding themes of the programme… |
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– A unique insight into the properties of iron aerosols in the Arctic Ocean
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Gao and co-workers collected size-segregated aerosols over 8 segments of the 2015 US GEOTRACES cruise (GN01) across the Arctic Ocean. They show that aerosol iron had a single-mode size distribution…
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–The Colloidal Hourglass: North Atlantic Iron Distribution Controlled by Dynamic Colloidal Phase
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K. Kunde and colleagues show that a highly dynamic colloidal iron phase in the upper ocean and at the seafloor boundary controls the distribution of dissolved iron at key sources and sinks across the subtropical North Atlantic Ocean, while the ocean interior is marked by an equilibrium partitioning between the soluble and colloidal phases…
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Read More – Diatoms use a stolen bacterial gene to commit iron piracy |
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Much of the primary production in low-iron marine environments is carried out by diatoms, and therefore the details of how these phytoplankton acquire the iron they need can have major impacts of biogeochemical cycles…
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– Unprecedented iron delivery from the Congo River margin to the South Atlantic Gyre
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The Congo River is the world’s second largest river by discharge volume and the only major river discharging into an eastern boundary region. Despite of its size, the Congo River plume and its influence on trace element cycles and ocean primary productivity is poorly constrained…
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GEOTRACES News
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| – GEOTRACES Intermediate Data Product 2021 Announcement |
| Deadlines, on-line portal and fair use agreement
Following from the release of two intermediate data products in 2014 and 2017, the GEOTRACES Data Management Committee is pleased to announce the planned release of the third intermediate data product in July 2021 (IDP2021).
Click on “read more” to learn about deadlines to submit data, the new on-line portal to register your data and the use of a fair use agreement for IDP2021 data!
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– GEOTRACES at Ocean Sciences Meeting 2020
Get your data registered at the SCOR Booth
You can get help registering your GEOTRACES data sets for inclusion in the next Intermediate Date Product (IDP2021) at the SCOR booth at the Ocean Sciences Meeting 2020 (16-21 February, San Diego, CA, USA).
GEOTRACES committee members and Mohamed Adjou, the leader of the GEOTRACES Data Assembly Centre (GDAC) will be at the SCOR booth Tuesday 18 February through Thursday 20 February from 10AM to 6PM. Check the staffing schedule here.
GEOTRACES Sessions
Several GEOTRACES Sessions will be held at the Ocean Sciences Meeting. Check the complete list of GEOTRACES and GEOTRACES-related sessions here.
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– Featured Best Practice –
Inform the IPO at the planning stage of any GEOTRACES Special Session at a scientific conference or GEOTRACES Special Issue in a scientific journal
> To ensure they are advertised through the GEOTRACES web site and mailing list
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GEOTRACES in Numbers
| » Cruises completed: |
118 |
| » Section cruises completed: |
41 |
| »Peer-reviewed papers: |
1322
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GEOTRACES Dates
| – Cruises:
2 February – 8 March 2020, PROVOCCAR Process Study (GApr15), North Antarctic Peninsula.
12 March – 18 March 2020, BAIT Process Study (GApr13), Sargasso Sea, South East of Bermuda.
20 July – 19 August 2020, MetalGate Process Study (GApr16), North Atlantic Ocean and seas around Iceland.
– Forthcoming GEOTRACES meetings:
13 – 14 September 2020, GEOTRACES Data Management Committee, Santa Cruz, California, USA.
15 – 17 September 2020, GEOTRACES Scientific Steering Committee, Santa Cruz, California, USA.
– Forthcoming GEOTRACES Special Sessions:
16 – 20 February 2020, Ocean Sciences 2020, San Diego, California, USA.
21 – 26 June 2020, Goldschmidt 2020, Hawaii, USA. Submit an abstract before February, 14!
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Access the GEOTRACES Calendar
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Latest Publications
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| – Janssen, D. J., Rickli, J., Quay, P. D., White, A. E., Nasemann, P., & Jaccard, S. L. (2020). Biological Control of Chromium Redox and Stable Isotope Composition in the Surface Ocean. Global Biogeochemical Cycles, 34(1). DOI: 10.1029/2019GB006397
– Lerner, P., Marchal, O., Lam, P. J., Gardner, W., Richardson, M. J., & Mishonov, A. (2020). A model study of the relative influences of scavenging and circulation on 230Th and 231Pa in the western North Atlantic. Deep Sea Research Part I: Oceanographic Research Papers, 155, 103159. DOI: 10.1016/j.dsr.2019.103159
– Liao, W., Takano, S., Yang, S., Huang, K., Sohrin, Y., & Ho, T. (2020). Zn Isotope Composition in the Water Column of the Northwestern Pacific Ocean: The Importance of External Sources. Global Biogeochemical Cycles, 34(1). DOI: 10.1029/2019GB006379
– Shaked, Y., Buck, K. N., Mellett, T., & Maldonado, M. T. (2020). Insights into the bioavailability of oceanic dissolved Fe from phytoplankton uptake kinetics. The ISME Journal, 1–12. DOI: 10.1038/s41396-020-0597-3 |
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| Access the GEOTRACES Database |
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Banner 3D scene figure: 3D scene showing the distribution of dissolved iron in the Atlantic Ocean. Source: Schlitzer, R., eGEOTRACES – Electronic Atlas of GEOTRACES Sections and Animated 3D Scenes, http://www.egeotraces.org, 2017.
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