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Northward shift of the southern westerlies during the Antarctic Cold Reversal
Citation
Fletcher, M-S and Pedro, J and Hall, T and Mariani, M and Alexander, JA and Beck, K and Blaauw, M and Hodgson, DA and Heijnis, H and Gadd, PS and Lise-Pronovos, A, Northward shift of the southern westerlies during the Antarctic Cold Reversal, Quaternary Science Reviews, 271 Article 107189. ISSN 1873-457X (2021) [Refereed Article]
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DOI: doi:10.1016/j.quascirev.2021.107189
Abstract
Inter-hemispheric asynchrony of climate change through the last deglaciation has been theoretically linked to latitudinal shifts in the southern westerlies via their influence over CO2 out-gassing from the Southern Ocean. Proxy-based reconstructions disagree on the behaviour of the westerlies through this interval. The last deglaciation was interrupted in the Southern Hemisphere by the Antarctic Cold Reversal (ACR; 14.7 to 13.0 ka BP (thousand years Before Present)), a millennial-scale cooling event that coincided with the Bøllinge-Allerød warm phase in the North Atlantic (BA; 14.7 to 12.7 ka BP). We present terrestrial proxy palaeoclimate data that demonstrate a migration of the westerlies during the last deglaciation. We support the hypothesis that wind-driven out-gassing of old CO2 from the Southern Ocean drove the deglacial rise in atmospheric CO2.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Antarctic cold reversal, Tasmania, Carbon cycle, Southern ocean, Pollen, Charcoal, Southern hemisphere |
| Research Division: | Earth Sciences |
| Research Group: | Climate change science |
| Research Field: | Climate change processes |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in the earth sciences |
| UTAS Author: | Pedro, J (Dr Joel Pedro) |
| ID Code: | 151337 |
| Year Published: | 2021 |
| Web of Science® Times Cited: | 1 |
| Deposited By: | Institute for Marine & Antarctic Studies |
| Deposited On: | 2022-07-27 |
| Last Modified: | 2022-07-27 |
| Downloads: | 0 |
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