Articles | Volume 17, issue 2
https://doi.org/10.5194/tc-17-701-2023
https://doi.org/10.5194/tc-17-701-2023
Research article
 | 
13 Feb 2023
Research article |  | 13 Feb 2023

Antarctic sea ice regime shift associated with decreasing zonal symmetry in the Southern Annular Mode

Serena Schroeter, Terence J. O'Kane, and Paul A. Sandery

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Cited articles

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Short summary
Antarctic sea ice has increased over much of the satellite record, but we show that the early, strongly opposing regional trends diminish and reverse over time, leading to overall negative trends in recent decades. The dominant pattern of atmospheric flow has changed from strongly east–west to more wave-like with enhanced north–south winds. Sea surface temperatures have also changed from circumpolar cooling to regional warming, suggesting recent record low sea ice will not rapidly recover.