The Cryosphere
The Cryosphere
TC
Articles | Volume 17, issue 12
Articles | Volume 17, issue 12
https://doi.org/10.5194/tc-17-5219-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-5219-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 12
Research article
 | 
08 Dec 2023
Research article |  | 08 Dec 2023

Multidecadal variability and predictability of Antarctic sea ice in the GFDL SPEAR_LO model

Yushi Morioka, Liping Zhang, Thomas L. Delworth, Xiaosong Yang, Fanrong Zeng, Masami Nonaka, and Swadhin K. Behera

Supplement

https://doi.org/10.5194/tc-17-5219-2023-supplement

Data sets

NOAA/NSIDC Climate Data Record of Passive Microwave Sea Ice Concentration, Version 4 W. N. Meier, F. Fetterer, A. K. Windnagel, and J. S. Stewart https://doi.org/10.7265/efmz-2t65

Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century (https://www.metoffice.gov.uk/hadobs/hadisst/data/download.html) N. A. Rayner, D. E. Parker, E. B. Horton, C. K. Folland, L. V. Alexander, D. P. Rowell, E. C. Kent, and A. Kaplan https://doi.org/10.1029/2002JD002670

The Met Office Hadley Centre sea ice and sea surface temperature data set, version 2: 1. Sea ice concentrations (https://www.metoffice.gov.uk/hadobs/hadisst2/data/download.html) H. A. Titchner and N. A. Rayner https://doi.org/10.1002/2013JD020316

EN4: Quality controlled ocean temperature and salinity profiles and monthly objective analyses with uncertainty estimates (https://www.metoffice.gov.uk/hadobs/en4/download.html) S. A. Good, M. J. Martin, and N. A. Rayner https://doi.org/10.1002/2013JC009067

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Short summary
Antarctic sea ice extent shows multidecadal variations with its decrease in the 1980s and increase after the 2000s until 2015. Here we show that our climate model can predict the sea ice decrease by deep convection in the Southern Ocean and the sea ice increase by the surface wind variability. These results suggest that accurate simulation and prediction of subsurface ocean and atmosphere conditions are important for those of Antarctic sea ice variability on a multidecadal timescale.
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