Purich, A., & Doddridge, E. W.
Nature Communications Earth & Environment, 2023.
https://doi.org/10.1038/s43247-023-00961-9
Abstract
In February 2023, Antarctic sea ice set a record minimum; there have now been three record- breaking low sea ice summers in seven years. Following the summer minimum, circumpolar Antarctic sea ice coverage remained exceptionally low during the autumn advance and in June the largest negative areal extent anomaly over the satellite era was observed. Here, we show the confluence of Southern Ocean subsurface warming and record minima and suggest that ocean warming has played a role in pushing Antarctic sea ice into a new low-extent state. In addition, this new state exhibits different seasonal persistence characteristics, suggesting that the underlying processes controlling Antarctic sea ice coverage may have altered.
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Edward Doddridge 