Articles | Volume 19, issue 10
https://doi.org/10.5194/tc-19-4409-2025
https://doi.org/10.5194/tc-19-4409-2025
Research article
 | 
09 Oct 2025
Research article |  | 09 Oct 2025

How well do the regional atmospheric and oceanic models describe the Antarctic sea ice albedo?

Kristiina Verro, Cecilia Äijälä, Roberta Pirazzini, Ruzica Dadic, Damien Maure, Willem Jan van de Berg, Giacomo Traversa, Christiaan T. van Dalum, Petteri Uotila, Xavier Fettweis, Biagio Di Mauro, and Milla Johansson

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Cited articles

Äijälä, C., Nie, Y., Gutiérrez-Loza, L., De Falco, C., Lauvset, S. K., Cheng, B., Bailey, D. A., and Uotila, P.: Impacts of the CICE sea ice model and ERA atmosphere on an Antarctic MetROMS ocean model, MetROMS-UHel-v1.0, Geosci. Model Dev., 18, 4823–4853, https://doi.org/10.5194/gmd-18-4823-2025, 2025. a, b, c
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Bareiss, J. and Görgen, K.: ISPOL weather conditions in the context of long-term climate variability in the north-western Weddell Sea, Deep-Sea Res. Pt. II, 55, 918–932, https://doi.org/10.1016/j.dsr2.2007.12.017, 2008. a
Barnier, B., Madec, G., Penduff, T., Molines, J., Treguier, A.-M., Le Sommer, J., Beckmann, A., Biastoch, A., Boning, C., Dengg, J., Derval, C., Durand, E., Gulev, S., Remy, E., Talandier, C., Theetten, S., Maltrud, M., McClean, J., and de Cuevas, B.: Impact of partial steps and momentum advection schemes in a global ocean circulation model at eddy-permitting resolution, Ocean Dynam., 56, 543–567, https://doi.org/10.1007/s10236-006-0082-1, 2006. a
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Short summary
Accurately representing Antarctic sea ice is essential for reliable climate and ocean model predictions. We evaluated how different models simulate the sea ice's sunlight reflectivity (called albedo) using field and satellite data. Models with simple albedo schemes performed well in limited cases but missed key processes. The advanced scheme in the MetROMS-UHel ocean model provided the most accurate results, including observed day–night albedo changes observed during a field campaign.
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