Many trace elements are critical for marine life and therefore influence the functioning of ocean ecosystems and the global carbon cycle. Some trace elements are also of concern as contaminants, while others, together with a diverse array of isotopes, are used to assess modern-ocean processes and the role of the ocean in past climate change. Despite the recognised importance of trace elements and isotopes in the ocean, our ability to exploit knowledge of their attributes is limited by uncertainty about their sources, sinks, internal cycling and chemical speciation. GEOTRACES now fills this critical gap with knowledge of the marine biogeochemical cycles of trace elements and their isotopes at an unprecedented scale.
GEOTRACES mission: To identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. /

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Recent Submissions

  • GO FLO Repair: Dr GO-FLO presents: Cleaning your new General Oceanic's GO-FLO. [Training video] 

    Cutter, Gregory (Old Dominion University, Department of Ocean, Earth and Atmopheric Sciences, Norfolk, VA, 2014)
    The video shows how to disassemble and clean [ and reassemble] GO Flo bottles used in GEOTRACES to take uncontaminated marine water samples. 23.44 mins. A go-flo bottle is used to collect water samples for research of ...
  • Rapid and noncontaminating sampling system for trace elements in global ocean surveys. 

    Cutter, Gregory A.; Bruland, Kenneth W. (2012)
    A system for the rapid and noncontaminating sampling of trace elements with volumes of up to 36 L per depth and including the dissolved and particulate phases has been developed for ocean sections that are a crucial part ...
  • Setting up and assessing a trace element sampling system – lessons learned. 

    Cutter, Greg (Old Dominion University for GEOTRACES, Norfolk, VA, 2019)
    Based on 11 years of experience, Greg Cutter, GEOTRACES Standards and Intercalibration past co-chair, has summarised the recommendations that nations developing a trace metal-clean sample system need to consider for ...
  • Intercalibration in Chemical Oceanography.[Webpage] 

    Cutter, Gregory A.; Croot, Peter L.; Andersson, Per S. (John Wiley for Association for the Sciences of Limnology and Oceanography (ASLO), Hoboken, NJ, 2012)
    This Special Issue, the first of its kind for the journal, is devoted to the topic of intercalibration as applied to chemical measurements in the ocean. Rather than giving a formal metrological definition of intercalibration, ...
  • Sampling and Sample-handling Protocols for GEOTRACES Cruises. Version 3, August 2017. 

    Cutter, Gregory; Casciotti, Karen; Croot, Peter; Geibert, Walter; Heimbürger, Lars-Eric; Lohan, Maeve; Planquette, Hélène; van de Flierdt, Tina (GEOTRACES International Project Office, Toulouse, France, 2017)
    The GEOTRACES Standards and Intercalibration (S&I) Committee is charged with ensuring that the data generated during GEOTRACES are as precise and accurate as possible, which includes all the steps from sampling to analysis. ...