Three GEOTRACES cruises will be sailing simultaneously in the Atlantic, the Pacific and the Southern Ocean

Three national GEOTRACES programmes (Japan, UK and South Africa) will undertake GEOTRACES cruises in the coming months. The first cruise to leave port will be the Japanese cruise along the GEOTRACES Pacific section GP02. This section cruise will depart from Tokyo (Japan) on 23 June and arrive port in Vancouver (Canada) on 7 August. During the cruise, biogeochemical cycles of trace elements and isotopes (TEIs) will be investigated in the High-Nutrient, Low-Chlorophyll (HNLC) areas of the subarctic North Pacific and the Gulf of Alaska (see figure below).

The UK ZIPLOC cruise will sail in the tropical Atlantic Ocean. It will depart on 27 June from Guadeloupe (French overseas region) and return port on 13 August in Tenerife (Canary Islands). This cruise has been endorsed as GEOTRACES process study and it will investigate zinc, iron and phosphorus co-limitation in the ocean.

The South African GEOTRACES cruise on board the research vessel Angulhas II will depart from Cape Town (South Africa) on 29 June. During 15-days this GEOTRACES process study will navigate in the Indian sector of the Southern Ocean (30˚E line, see figure below) to study the sources, sinks and cycling of bioactive trace elements as well as the impact of the hydrothermal ridge on trace metal distribution and speciation. Follow this cruise at:

  • Japanese cruise chief scientist: Hajime Obata
  • UK cruise chief scientist: Claire Mahaffey  (GEOTRACES scientists: Maeve Lohan and Alessandro Tagliabue)
  • South African cruise chief scientist: Marcello Vichi (GEOTRACES scientist: Alakaendra Roychoudhury)

2017 2 Cruise track

Figure: (A) Cruise track of the Japanese cruise (KH-17-3) along GEOTRACES GP02 line; (B) Cruise track of the South African process study cruise (AIMIZ-GIO6). Click here to view the figure larger.

GEOTRACES paper selected as NOAA-Office of Oceanographic and Atmospheric Research paper of the year

15 Nature cover

Congratulations to Joseph Resing and co-authors whose paper "Basin-scale transport of hydrothermal dissolved metals across the South Pacific Ocean" (2015, see reference below) was selected for a NOAA-Office of Oceanographic and Atmospheric Research paper of the year award. This paper published in Nature reports findings from the US East Pacific Zonal Transect (EPZT) GEOTRACES cruise (GP16).

The paper was featured on the cover of Nature (Volume 523 Number 7559, Thursday 9 July 2015). A GEOTRACES science highlight of the paper is available here.


Resing, J. A., Sedwick, P. N., German, C. R., Jenkins, W. J., Moffett, J. W., Sohst, B. M., & Tagliabue, A. (2015). Basin-scale transport of hydrothermal dissolved metals across the South Pacific Ocean. Nature, 523(7559), 200–203. DOI:


Public Release of GEOTRACES IDP2017

  IDP2017 logo  

Building on the success of its first Intermediate Data Product, GEOTRACES is pleased to announce the public release of its new Intermediate Data Product:

GEOTRACES Intermediate Data Product 2017

Wednesday, 16 August 2017, 12h45 - 14h15

2017 Goldschmidt Conference (Paris, France)
Room: Havane (Palais des Congrés de Paris) 

An updated eGEOTRACES Electronic Atlas will be distributed on a USB drive
A limited number of lunch boxes will be provided

We will be pleased to welcome you!

The new product presents a more complete coverage of the global ocean, a larger range of biogeochemical parameters...

...and reveals new exciting discoveries

Come in and find out more!

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GEOTRACES intercalibration cruise for mercury species in seawater

A GEOTRACES intercalibration cruise for mercury species in seawater will be held from 11 to 23 June 2017. During that time, 6 daily cruises in the Northwestern Mediterranean Sea will be conducted on res
earch vessel Anthedon II. 23 scientists of 13 international Hg teams will sample a coastal – open ocean gradient using a trace clean rosette with 12 Go-Flo bottles and 4 McLane in situ pumps. Samples will be brought back to the Mediterranean Institute of Oceanography and analyzed in clean conditions within hours after sampling. We will also fill 1500 pre-combusted 100 mL glass bottles to develop a GEOTRACES Hg reference material. This intercalibration cruise is build on the previous intercalibration exercises within GEOTRACES (2008, 2009, 2011, 2013, 2014, 2015), and those before, and will be essential for the intercalibration of all Hg species for the GEOTRACES intermediate data product (IDP).

Chief scientist: Lars-Eric Heimbürger (Mediterranean Institute of Oceanography, France)

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NEW!!! GEOTRACES digital data selection and subsetting service

Do you want to extract subsets of data from the GEOTRACES Intermediate Data Product?

This is now possible thanks to the new online digital data selection and subsetting service available here:

This new service has been developed by Reiner Schlitzer and Sebastian Mieruch at the Alfred Wegener Institute (AWI) as a second way of obtaining IDP data in addition to the bulk download from the GDAC web page.

Your feedback is welcomed at:

Please note that you will be required to register with AWI to access this service.

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GEOTRACES session at Past Global Changes Open Science Meeting

A GEOTRACES session entitled « Trace elements and their isotopes as geochemical proxies of past ocean conditions » was successfully held at the Past Global Changes (PAGES) Open Science Meeting (9-13 May 2017 - Zaragoza, Spain). Eight speakers and 28 posters were presented to more than 150 attendees. This session was a promising first step towards builiding improved links between the modern and paleo-oceanographers.

2017 PAGES
Picture: GEOTRACES session at PAGES Open Science Meeting (May 2017). © Chuxian Li


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