SCOR Working Group 147

Towards comparability of global oceanic nutrient data (COMPONUT)

Michio Aoyama (Japan) and E. Malcolm S. Woodward (UK)
Other Full Members
Susan Becker (USA), Karin Bjorkman (USA), Anne Daniel (France), Claire Mahaffey (UK), Hema Naik (India), Raymond Roman (South Africa), Bernadette Sloyan (Australia), and Toste Tanhua (Germany)
Associate Members
Karel Bakker (Netherlands), Minhan Dai (China-Beijing), Andrew Dickson (USA), Akiharu Hioki (Japan), Alex Kozyr (USA), Akihiko Murata (Japan), TaeKeun Rho (Korea), Sophie Seeyave (UK), Jonathan Sharp (USA), Winnie van Vark (Netherlands), Takeshi Yoshimura (Japan)
Marie-Alexandrine Sicre
Terms of Reference
  1. To establish mechanisms to ensure comparability of oceanic nutrient data in collaboration with International organisations such as ICES and PICES.

  2. To assess the homogeneity and stability of currently available RMs/CRMs: The group needs to determine whether the current producers are achieving a level of precision within and between laboratories which is comparable to or better than 1%.

  3. To develop standardized data-handling procedures with common data vocabularies and formats, across producers and users, and will include the future linking of national and international data archives. The group will seek to involve international data center representatives to contribute to and lead this task.

  4. To promote the wider global use of RMs by arranging workshops to actively encourage their use, and to provide training in analytical protocols and best practices, including sample preservation protocols, particularly targeted towards developing countries.

  5. To continue regular global inter-comparison studies, following on from the previous exercises in 2003, 2006, 2008 and 2012, with collaboration of IOCCP-SSG and RCGC-JAMSTEC.

  6. To update the GO-SHIP nutrient measurement manual, which was originally a product of the IOC-ICES SGONS, (Study Group on Nutrient Standards).

  7. To publish reports on this WG’s activities and workshops.

September 2014
Financial Sponsors
  1. 14-15 April 2015 in Vienna, Austria

  2. 23-24 September 2016 in Qingdao, China

    Comparability of oceanic nutrient data – Poster Cluster Committee Whitepaper, CLIVAR OSC 2016

    WG 147 Posters from CLIVAR Open Science Conference

    1. An Overview of SCOR WG 147
    2. Improve global nutrient comparability through distribution of nutrient CRM’s
    3. Comparability of Oceanic Nutrient Data GO-SHIP Repeat Hydrography Nutrient Manual
    4. Methods of certified reference material (CRM) production and certification for reference materials for nutrients in seawater
    5. Comparability of Ocean Nutrient Data by KIOST Reference Material Series for Nutrients (K-RMS)
    6. IOCCP-JAMSTEC 2015 Interlaboratory Intercalibration Exercise of a Certified Reference Material for Nutrients in Seawater
    7. Use of CRMs in the French intercalibration program
    8. Results from the secondary QC of GLODAPv2 nutrient data
    9. Use of CRM/RMNS in CLIVAR cruises to ensure comparability
    10. Hawaiian Ocean Time-Series Station ALOHA
    11. Comparability of oceanic nutrient data: SIO’S Oceanographic Data Facility Support for the GO-SHIP and Argo communities
    12. Report from an international nutrient workshop focusing on phosphate (PO4) analysis
    13. Using an approved silicate standard and good lab practice doesn’t automatically imply good inter-comparison results
    14. Changes in salinity and nutrients along 47°N in the North Pacific


  3. SCOR-POGO Nutrient Workshop (5-9 Nov. 2017, Texel, The Netherlands)

  4. 14-15 February 2018 in Portland, Oregon, USA

  5. 7-10 July 2019 in La Jolla, California, USA