SCOR Working Group 152

Measuring Essential Climate Variables in Sea Ice (ECV-Ice)

Intercalibration experiment in Saroma-Ko Lagoon, Hokkaido, Japan in March 2016 (photo by Daiki Nomura).
Daiki Nomura (Japan), François Fripiat (Germany), and Brent Else (Canada)
Other Full Members
Bruno Delille (Belgium), Mar Fernandez-Méndez (Norway), Lisa Miller (Canada), Ilka Peeken (Germany), Janne Markus Rintala (Finland), Maria van Leeuwe (Netherlands), and Fan Zhang (China-Beijing).
Associate Members
Katarina Abrahamsson (Sweden), Jeff Bowman (USA), Karley Campbell (Norway), James France (UK), Agneta Fransson (Norway), Delphine Lannuzel (Australia), Brice Loose (USA), Klaus Meiners (Australia), Christopher J. Mundy (Canada), Hyoung Chul Shin (Korea), Jean-Louis Tison (Belgium), and Marcello Vichi (South Africa)
Hans van Haren
Terms of Reference
  1. Publish synthetic reviews compiled from measurements demonstrating large, unresolved discrepancies, with a special emphasis on primary production, gas concentrations and fluxes. These detailed reviews will draw on both the literature and unpublished studies to evaluate the strengths and weaknesses related to each methodology.

  2. Design and coordinate intercalibration experiments to evaluate different methods for key parameters. In addition to organizing field experiments, we will pursue use of ice tank facilities and stimulate and support applications for funding, at both national and international levels, to further facilitate the experiments. If successful, manuscripts will be written and the outcomes will be presented in the guide of best practice to support the recommendations.

  3. Design intercomparison studies to facilitate validation and adoption of new technologies for assessing the complexity and heterogeneity of sea ice at various spatial and temporal scales.

  4. Create a guide of best practices for biological and biogeochemical studies in the sea-ice environment. This will be accomplished using a web-based forum for compiling and disseminating the outcomes of past and new intercomparison studies.

September 2016
Financial Sponsors
  1. April 2017, San Diego, California, USA

  2. 17 June 2018, Davos, Switzerland

  3. 16-18 August 2019, Winnipeg, Canada

  4. August 2020 (online)

  5. August 2021 (online)

  6. March 2022 (online)

  7. May 2022, Cambridge Bay, Canada

  8. March 2023 in San Diego, CA

Group Website
  • Butterworth, B.J. and Else, B.G.T. 2018. Dried, closed-path eddy covariance method for measuring carbon dioxide flux over sea ice. Atmos. Meas. Tech. 11:6075-6090,

  • Campbell, K., Mundy, C. J., Juhl, A. R., Dalman, L. A., Michel, C., Galley, R. J., Else, B. E., Geilfus, N. X., and Rysgaard, S. 2019. Melt Procedure Affects the Photosynthetic Response of Sea Ice Algae. Front. Earth Sci. 7:21. doi: 10.3389/feart.2019.00021

  • Meiners, K.M., Vancoppenolle M., et al. 2018. Chlorophyll-a in Antarctic land-fast sea ice: A first synthesis of historical ice-core data. Geophysical Research: Oceans, 123, 8444-8459,

  • Roukaerts, A., D. Nomura, F. Deman, H. Hattori, F. Dehairs, and F. Fripiat. 2019. The effect of melting treatments on the assessment of biomass and nutrients in sea ice (Saroma-ko lagoon, Hokkaido, Japan), Polar Biology 42(2):347–356,

  • Nomura, D., Wongpan, P., Toyota, T., Tanikawa, T., Kawaguchi, Y., Ono, T., Ishino, T., Tozawa, M., Tamura, T. P., Yabe, I. S., Son, E. Y., Vivier, F., Lourenco, A., Lebrun, M., Nosaka, Y., Hirawake, T., Ooki, A., Aoki, S., Else, B., … Vancoppenolle, M. (2020). Saroma-ko Lagoon Observations for sea ice Physico-chemistry and Ecosystems 2019 (SLOPE2019). Bulletin of Glaciological Research, 38(0), 1–12.

  • Nomura, D., Ikawa, H., Kawaguchi, Y., Kanna, N., Kawakami, T., Nosaka, Y., et al. (2022). Atmosphere-sea ice-ocean interaction study in Saroma-ko Lagoon, Hokkaido, Japan 2021. Bulletin of Glacier Research 40, 1–17. doi: 10.5331/bgr.21R02.
  • Else, B. G. T., Cranch, A., Sims, R. P., Jones, S., Dalman, L. A., Mundy, C. J., et al. (2022). Variability in sea ice carbonate chemistry: a case study comparing the importance of ikaite precipitation, bottom-ice algae, and currents across an invisible polynya. The Cryosphere 16, 3685–3701. doi: 10.5194/tc-16-3685-2022.
  • Lebrun, M., Vancoppenolle, M., Madec, G., Babin, M., Becu, G., Lourenço, A., Nomura, D., Vivier, F., & Delille, B. (2023). Light Under Arctic Sea Ice in Observations and Earth System Models. Journal of Geophysical Research: Oceans, 128(3), e2021JC018161.