Articles | Volume 16, issue 5
The Cryosphere, 16, 1807–1819, 2022
https://doi.org/10.5194/tc-16-1807-2022
The Cryosphere, 16, 1807–1819, 2022
https://doi.org/10.5194/tc-16-1807-2022
Research article
11 May 2022
Research article | 11 May 2022

An evaluation of Antarctic sea-ice thickness from the Global Ice-Ocean Modeling and Assimilation System based on in situ and satellite observations

Sutao Liao et al.

Data sets

GIOMAS Data Polar Science Center http://psc.apl.washington.edu/zhang/Global_seaice/data.html

ESA Sea Ice Climate Change Initiative (Sea_Ice_cci): Southern hemisphere sea ice thickness from the Envisat satellite on a monthly grid (L3C) S. Hendricks, S. Paul, and E. Rinne https://doi.org/10.5285/b1f1ac03077b4aa784c5a413a2210bf5

ESA Sea Ice Climate Change Initiative (Sea\_Ice\_cci): Southern hemisphere sea ice thickness from the CryoSat-2 satellite on a monthly grid (L3C) S. Hendricks, S. Paul, and E. Rinne https://doi.org/10.5285/48fc3d1e8ada405c8486ada522dae9e8

Sea ice draft measured by upward looking sonars in the Weddell Sea (Antarctica) Axel Behrendt, Wolfgang Dierking, Eberhard Fahrbach, and Hannelore Witte https://doi.org/10.1594/PANGAEA.785565

ASPeCt Data Antarctic Sea Ice Processes & Climate http://aspect.antarctica.gov.au/data

Sea ice conditions during POLARSTERN cruise ANT-XXIX/6 (AWECS) Sandra Schwegmann https://doi.org/10.1594/PANGAEA.819540

Sea ice conditions during POLARSTERN cruise ANT-XXIX/7 Robert Ricker https://doi.org/10.1594/PANGAEA.831976

Thickness of sea ice during POLARSTERN cruise ANT-XXIII/7 (Winter Weddell Outflow Study) C. Haas, M. Nicolaus, A. Friedrich, A. Pfaffling, Z. Li, and T. Toyota https://doi.org/10.1594/PANGAEA.771229

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Short summary
The Global Ice-Ocean Modeling and Assimilation System (GIOMAS) can basically reproduce the observed variability in Antarctic sea-ice volume and its changes in the trend before and after 2013, and it underestimates Antarctic sea-ice thickness (SIT) especially in deformed ice zones. Assimilating additional sea-ice observations with advanced assimilation methods may result in a more accurate estimation of Antarctic SIT.