@InProceedings{CasagrandeSouzStac:2024:AsCMCM,
author = "Casagrande, Fernanda and Souza, Ronald Buss de and Stachelski,
Let{\'{\i}}cia",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "Assessment of CMIP5 and CMIP6 Antarctic Sea ice simulations",
booktitle = "Proceedings...",
year = "2024",
organization = "Ocean Sciences Meeting",
publisher = "AGU",
abstract = "Sea ice is a critical component of the Earths system and plays a
fundamental role in the global climate. Here we investigated the
ability of twenty-two climate models from CMIP5 and CMIP6 to
represent the Antarctic seasonal cycle of sea ice area and
concentration (SIA and SIC) between 1980-2005 (1980-2014) and the
Antarctic sea ice projections until the end of the 21st century.
We highlighted the improvements of each model and discussed the
main sources of the models' uncertainties associated with the
complexity of the ocean-atmosphere-ice system. The simulations
showed good agreement among the climate model results and
satellite for SIA, however, the SIC parameter revealed systematic
bias in February (September) in the Weddell Sea, Amundsen Sea,
Bellingshausen Sea, and Ross Sea (nearby to the Polar Front), as
well as, a substantial inter-model spread in SIA across climate
models. The projected sea ice changes indicated a strong sea ice
sensibility to CO2 forcing. Most of the models showed rapid sea
ice loss until the end of the 21st century. The uncertainties and
low confidence of the Antarctic sea simulation are associated with
the unrealistic representation of the Southern Ocean properties,
such as the SST, cloud representation, shortwave radiation, the
westerly winds, the effect of the Antarctic ice sheet melting, and
the presence of mesoscale eddies. Even with the recent advances
brought by the CMIP6 models, the progress in CMIP5 simulations
related to the CMIP6 ones is still limited for realistically
representing the Antarctic sea ice.",
conference-location = "New Orleans",
conference-year = "18-23 Feb. 2024",
urlaccessdate = "06 maio 2024"
}