Interhemispheric Atlantic seesaw response during the last deglaciation
The asynchronous relationship between millennial-scale temperature changes over Greenland and Antarctica during the last glacial period has led to the notion of a bipolar seesaw which acts to redistribute heat depending on the state of meridional overturning circulation within the Atlantic Ocean. He...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Nature Publishing Group
2009
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Online Access: | http://okina.univ-angers.fr/publications/ua3815 https://doi.org/10.1038/nature07770 |
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ftunivangokina:oai:okina.univ-angers.fr:3815 2023-05-15T13:41:16+02:00 Interhemispheric Atlantic seesaw response during the last deglaciation S. Barker P. Diz M.J. Vautravers J. Pike G. Knorr I.R. Hall W.S. Broecker 2009 http://okina.univ-angers.fr/publications/ua3815 https://doi.org/10.1038/nature07770 eng eng Nature Publishing Group Nature Article scientifique dans une revue à comité de lecture 2009 ftunivangokina https://doi.org/10.1038/nature07770 2017-04-13T17:48:58Z The asynchronous relationship between millennial-scale temperature changes over Greenland and Antarctica during the last glacial period has led to the notion of a bipolar seesaw which acts to redistribute heat depending on the state of meridional overturning circulation within the Atlantic Ocean. Here we present new records from the South Atlantic that show rapid changes during the last deglaciation that were instantaneous (within dating uncertainty) and of opposite sign to those observed in the North Atlantic. Our results demonstrate a direct link between the abrupt changes associated with variations in the Atlantic meridional overturning circulation and the more gradual adjustments characteristic of the Southern Ocean. These results emphasize the importance of the Southern Ocean for the development and transmission of millennial-scale climate variability and highlight its role in deglacial climate change and the associated rise in atmospheric carbon dioxide. Article in Journal/Newspaper Antarc* Antarctica Greenland North Atlantic Southern Ocean Université Angers: Okina (Open Knowledge, INformation, Access) Greenland Southern Ocean Nature 457 7233 1097 1102 |
institution |
Open Polar |
collection |
Université Angers: Okina (Open Knowledge, INformation, Access) |
op_collection_id |
ftunivangokina |
language |
English |
description |
The asynchronous relationship between millennial-scale temperature changes over Greenland and Antarctica during the last glacial period has led to the notion of a bipolar seesaw which acts to redistribute heat depending on the state of meridional overturning circulation within the Atlantic Ocean. Here we present new records from the South Atlantic that show rapid changes during the last deglaciation that were instantaneous (within dating uncertainty) and of opposite sign to those observed in the North Atlantic. Our results demonstrate a direct link between the abrupt changes associated with variations in the Atlantic meridional overturning circulation and the more gradual adjustments characteristic of the Southern Ocean. These results emphasize the importance of the Southern Ocean for the development and transmission of millennial-scale climate variability and highlight its role in deglacial climate change and the associated rise in atmospheric carbon dioxide. |
format |
Article in Journal/Newspaper |
author |
S. Barker P. Diz M.J. Vautravers J. Pike G. Knorr I.R. Hall W.S. Broecker |
spellingShingle |
S. Barker P. Diz M.J. Vautravers J. Pike G. Knorr I.R. Hall W.S. Broecker Interhemispheric Atlantic seesaw response during the last deglaciation |
author_facet |
S. Barker P. Diz M.J. Vautravers J. Pike G. Knorr I.R. Hall W.S. Broecker |
author_sort |
S. Barker |
title |
Interhemispheric Atlantic seesaw response during the last deglaciation |
title_short |
Interhemispheric Atlantic seesaw response during the last deglaciation |
title_full |
Interhemispheric Atlantic seesaw response during the last deglaciation |
title_fullStr |
Interhemispheric Atlantic seesaw response during the last deglaciation |
title_full_unstemmed |
Interhemispheric Atlantic seesaw response during the last deglaciation |
title_sort |
interhemispheric atlantic seesaw response during the last deglaciation |
publisher |
Nature Publishing Group |
publishDate |
2009 |
url |
http://okina.univ-angers.fr/publications/ua3815 https://doi.org/10.1038/nature07770 |
geographic |
Greenland Southern Ocean |
geographic_facet |
Greenland Southern Ocean |
genre |
Antarc* Antarctica Greenland North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctica Greenland North Atlantic Southern Ocean |
op_source |
Nature |
op_doi |
https://doi.org/10.1038/nature07770 |
container_title |
Nature |
container_volume |
457 |
container_issue |
7233 |
container_start_page |
1097 |
op_container_end_page |
1102 |
_version_ |
1766148423907540992 |