# Record low Antarctic sea ice coverage indicates a new sea ice state

“Record low Antarctic sea ice coverage indicates a new sea ice state” (2023), by Ariaan Purich et al. Earth and Planetary Sciences research paper. Original abstract below, unchanged. A free PDF is available.

- Authors: Ariaan Purich, Edward W. Doddridge
- Published: September 13, 2023
- Field: Earth and Planetary Sciences
- DOI: https://doi.org/10.1038/s43247-023-00961-9
- Free PDF: https://www.nature.com/articles/s43247-023-00961-9.pdf

## 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 and winter advance, leading to the largest negative areal extent anomalies observed over the satellite era. 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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