An International Study of the Marine Biogeochemical Cycles of Trace Elements and Isotopes


Email address to contact the IPO – Network problem

Dear GEOTRACES community, Due to a network failure at the Institute hosting the GEOTRACES International Project Office (IPO), we kindly ask you to temporarily use the following gmail e-mail address if you need to contact the GEOTRACES IPO: ipogeotraces -at- We apologise for the inconvenience caused and thanks for your comprehension. GEOTRACES International Project […]


The deadline for guaranteed inclusion of data in IDP2021, was May 15, 2020. We greatly appreciate those of you who have met this deadline. The final deadline for dataset submission is December 15, 2020. We will make every effort to include all data sets that are submitted, but registering your dataset as soon as possible will improve […]

GEOTRACES Session at Virtual Goldschmidt 2020

Goldschmidt has gone Virtual for 2020 (21-26 June, As a result, they are now accepting new abstracts until May 4th. Please consider submitting to the GEOTRACES Session: 14m: Biogeochemical Cycling of Trace Elements and their Isotopes in the Oceans (GEOTRACES) Keynote: Brandy TonerInvited Speakers: Jun Nishioka, Sam WilsonConveners: Tim Conway, Mariko Hatta, Nick Hawco Trace elements […]

EXTENDED DEADLINE – GEOTRACES Intermediate Data Product 2021

Given the current worldwide situation caused by COVID-19, the first deadline for the submission of datasets to GDAC (or national data centres for US, Dutch and French PIs) using DOoR templates and intercalibration reports via DOoR to guarantee inclusion in IDP2021 is extended to the 15th of May 2020. Please find below the initial announcement […]

Announcement of the GEOTRACES Intermediate Data Product 2021

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). For GEOTRACES principal investigators (PIs) with data to include in IDP2021, we remind you that you need to (1) submit […]

New educational materials for improving science literacy in students

Timothy Kenna and Margie Turrin from Columbia University, New York, have made available a new set of educational materials in English and Spanish for developing science literacy in students. They have produced three educational activities which all have a focus on understanding radioactivity in the environment. The first is a lab designed to introduce the […]

Science Highlights

The biogeochemical ventures of dissolved iron and manganese across the Arctic Ocean

The spatial distributions and biogeochemical cycling of dissolved Fe (dFe) and dissolved manganese (dMn) across the Arctic Ocean were established during summer and fall 2015. The Canadian GEOTRACES transect extended from the Canada Basin (CB) to the Labrador Sea (LS) via the Canadian Arctic Archipelago (CAA). The surface, subsurface and deep water distributions for both […]

Arctic mercury export flux with marine particles higher than anticipated

In the ocean, the residence time of mercury (Hg), is largely driven by two removal mechanisms: evasion to the atmosphere and downward export flux with settling particles. The later was particularly poorly constrained in the Arctic Ocean, as was the Hg burial rate into the sediment. Using samples collected during the German GEOTRACES TransArcII (GN04) […]

Land inputs in the Arctic transported up to the North Pole

A new study found that freshwater runoff from rivers and continental shelf sediments are bringing significant quantities of carbon and trace elements into parts of the Arctic Ocean