Publication Abstracts
Roach et al. 2023, accepted
, , , E. Blanchard-Wrigglesworth, T.W.N. Haine, and , 2023: Winds and meltwater together lead to Southern Ocean surface cooling and sea ice expansion. Geophys. Res. Lett., accepted.
Southern Ocean surface cooling and Antarctic sea ice expansion from 1979 through 2015 have been linked both to changing atmospheric circulation and melting of Antarctica's grounded ice and ice shelves. However, climate models have largely been unable to reproduce this behavior. Here we examine the contribution of observed wind variability and Antarctic meltwater to Southern Ocean sea surface temperature (SST) and Antarctic sea ice. The free-running, CMIP6-class GISS-E2.1-G climate model can simulate regional cooling and neutral sea ice trends due to internal variability, but they are unlikely. Constraining the model to observed winds and meltwater fluxes from 1990 through 2021 gives SST variability and trends consistent with observations. Meltwater contributes more to the SST trend than winds, and winds contribute more to the sea ice trend than meltwater. However, while the constrained model captures much of the observed sea ice vari- ability, it only partially captures the post-2015 sea ice reduction.
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BibTeX Citation
@unpublished{ro02910k,
author={Roach, L. A. and Mankoff, K. and Romanou, A. and Blanchard-Wrigglesworth, E. and Haine, T. W. N. and Schmidt, G. A.},
title={Winds and meltwater together lead to Southern Ocean surface cooling and sea ice expansion},
year={2023},
journal={Geophys. Res. Lett.},
}
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RIS Citation
TY - INPR ID - ro02910k AU - Roach, L. A. AU - Mankoff, K. AU - Romanou, A. AU - Blanchard-Wrigglesworth, E. AU - Haine, T. W. N. AU - Schmidt, G. A. PY - 2023 TI - Winds and meltwater together lead to Southern Ocean surface cooling and sea ice expansion JA - Geophys. Res. Lett. ER -
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