Record low Antarctic sea ice coverage indicates a new sea ice state
Open accessAbstract
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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In Antarctica, the persistence of the ozone hole into early summer coincided with unprecedented sea ice losses during 2022-2024.
“In Antarctica, the persistence of the ozone hole into early summer coincided with unprecedented sea ice losses during 2022–2024 [192, 193].”
Cites
Hersbach, H., Bell, B., Berrisford, P., Hirahara, S., Horányi, A., Muñoz‐Sabater, J., Nicolas, J., Peubey, C., Radu, R., Schepers, D., et al. (2020) · Quarterly Journal of the Royal Meteorological Society · doi:10.1002/qj.3803 · Cited by 31,882 · see citing works
Antarctic Ocean and Sea Ice Response to Ozone Depletion: A Two-Time-Scale Problem
Ferreira, D., Marshall, J., Bitz, C. M., Solomon, S., & Plumb, A. (2015) · Journal of Climate · doi:10.1175/jcli-d-14-00313.1 · Cited by 281 · see citing works
Fan, T., Deser, C., & Schneider, D. P. (2014) · Geophysical Research Letters · doi:10.1002/2014gl059239 · Cited by 161 · see citing works
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Shaw, T. A., & Stevens, B. (2025) · Nature · doi:10.1038/s41586-025-08680-1 · Cited by 37 · see citing works
Neale, P. J., Hylander, S., Banaszak, A. T., Häder, D.-P., Rose, K. C., Vione, D., Wängberg, S.-Å., Jansen, M. A. K., Busquets, R., Andersen, M. P. S., et al. (2025) · Photochemical & Photobiological Sciences · doi:10.1007/s43630-025-00687-x · Cited by 32 · see citing works
“In Antarctica, the persistence of the ozone hole into early summer coincided with unprecedented sea ice losses during 2022–2024 [192, 193].”
Extended ozone depletion and reduced snow and ice cover—Consequences for Antarctic biota
Robinson, S. A., Revell, L. E., Mackenzie, R., & Ossola, R. (2024) · Global Change Biology · doi:10.1111/gcb.17283 · Cited by 18 · see citing works
- Authors
- Purich, A., & Doddridge, E. W.
- Affiliations
- Monash University (AU)
- University of Tasmania (AU)
- Corresponding author
- Purich, Ariaan
- Venue
- Communications Earth & Environment
- Published
- 2023-09-13
- Volume
- 4
- Issue
- 1
- ISSN
- 2662-4435 (ISSN-L)
- OpenAlex
- W4386712917
- Cited by
- 339
- References
- 3
- Citations by year
- 2026: 65 · 2025: 150 · 2024: 107 · 2023: 17
- FWCI
- 37.43
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Communications Earth & Environment (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Australian Government (ASCI000002)
- Australian Research Council (DP230102994, SR200100005)
- Topics
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Arctic and Antarctic ice dynamics
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Cryospheric studies and observations
- Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
- Keywords
- Antarctic sea ice, ocean warming, Antarctic climate change
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