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Climate of the Past An interactive open-access journal of the European Geosciences Union
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CP | Articles | Volume 15, issue 6
Clim. Past, 15, 1939–1958, 2019
https://doi.org/10.5194/cp-15-1939-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Clim. Past, 15, 1939–1958, 2019
https://doi.org/10.5194/cp-15-1939-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 15 Nov 2019

Research article | 15 Nov 2019

A South Atlantic island record uncovers shifts in westerlies and hydroclimate during the last glacial

Svante Björck et al.
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Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to minor revisions (review by editor) (25 Aug 2019) by Julie Loisel
AR by Svante Björck on behalf of the Authors (02 Sep 2019)  Author's response    Manuscript
ED: Publish as is (20 Sep 2019) by Julie Loisel
Publications Copernicus
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Short summary
Southern Hemisphere westerlies play a key role in regulating global climate. A lake sediment record on a mid-South Atlantic island shows changes in the westerlies and hydroclimate 36.4–18.6 ka. Before 31 ka the westerlies shifted in concert with the bipolar seesaw mechanism in a fairly warm climate, followed by southerly westerlies and falling temperatures. After 27.5 ka temperatures dropped 3 °C with drier conditions and with shifting westerlies possibly triggering the variable LGM CO2 levels.
Southern Hemisphere westerlies play a key role in regulating global climate. A lake sediment...
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