ArticleScience advances2025
Shifting Antarctic Circumpolar Current south of Africa over the past 1.9 million years.
Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Equatorward upper-ocean heat transport from the Southern Ocean boosted interglacial warming.Nature communications · 2026Article
- Disconnection of the late Pliocene Agulhas Leakage from Atlantic Meridional Overturning Circulation.Nature geoscience · 2026Article
- Zonally asymmetric changes in the Antarctic Circumpolar Current strength over the past million years.Nature geoscience · 2026Article
- Decoupled Antarctic and Subarctic export productivity under intensified Southern Hemisphere westerlies during the last interglacial.Nature communications · 2025Article
- Extremely poleward shift of Antarctic Circumpolar Current by eccentricity during the Last Interglacial.Nature communications · 2025Article
- Progressively greater biological carbon storage in the deep Atlantic during glacial inception.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Antarctic Circumpolar Current (ACC) dominates the transfer of heat, salt, and tracers around the Southern Ocean (SO), driving the upwelling of carbon-rich deep waters around Antarctica. Paleoclimate reconstructions reveal marked variability in SO circulation; however, few records exist coupling quantitative reconstructions of ACC flow with tracers of SO upwelling spanning multiple Pleistocene glacial cycles. Here, we reconstruct near-bottom flow speed variability in the SO south of Africa, revealing systematic glacial-interglacial variations in the strength and/or proximity of ACC jets. These are superimposed by warmer-than-present "super-interglacials," whereby extreme slowdown in the midlatitude ACC (41°S) is opposed by faster flow at higher latitudes (>54°S), implying poleward strengthening of the ACC. Coupled with reconstructions of the subsurface-deep stable carbon isotope gradient, we show that the reorganization of ACC coincides with the upwelling of isotopically light deep waters around Antarctica, likely contributing to the interglacial rise in atmospheric carbon dioxide (CO
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