Northward shift of the southern westerlies during the Antarctic Cold Reversal

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 throug...

Full description

Bibliographic Details
Published in:Quaternary Science Reviews
Main Authors: Fletcher, Michael-Shawn, Pedro, Joel, Hall, Tegan, Mariani, Michela, Alexander, Joseph, Beck, Kristen K., Blaauw, Maarten, Hodgson, Dominic, Heijnis, Henk, Gadd, Patricia S., Lise-Pronovost, Agathe
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 2021
Subjects:
F640 Earth Science
F860 Climatology
F643 Quaternary studies
F642 Geoscience
Antarctic
Southern Ocean
The Antarctic
Antarc*
North Atlantic
Online Access:https://eprints.lincoln.ac.uk/id/eprint/46616/
https://eprints.lincoln.ac.uk/id/eprint/46616/1/JQSR-D-21-00382_R1_Manuscript_prepublication%20for%20Repository.pdf
https://doi.org/10.1016/j.quascirev.2021.107189
Description
Summary: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 BøllingeAllerød 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.

Similar Items