Relative Timing of Deglacial Climate Events in Antarctica and Greenland
The last deglaciation was marked by large, hemispheric, millennial-scale climate variations: the Bølling-Allerød and Younger Dryas periods in the north, and the Antarctic Cold Reversal in the south. A chronology from the high-accumulation Law Dome East Antarctic ice core constrains the relative timi...
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Online Access: | http://dx.doi.org/10.1126/science.1074257 https://www.science.org/doi/pdf/10.1126/science.1074257 |
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craaas:10.1126/science.1074257 2024-06-23T07:47:28+00:00 Relative Timing of Deglacial Climate Events in Antarctica and Greenland Morgan, Vin Delmotte, Marc van Ommen, Tas Jouzel, Jean Chappellaz, Jérôme Woon, Suenor Masson-Delmotte, Valérie Raynaud, Dominique 2002 http://dx.doi.org/10.1126/science.1074257 https://www.science.org/doi/pdf/10.1126/science.1074257 en eng American Association for the Advancement of Science (AAAS) Science volume 297, issue 5588, page 1862-1864 ISSN 0036-8075 1095-9203 journal-article 2002 craaas https://doi.org/10.1126/science.1074257 2024-06-13T04:01:40Z The last deglaciation was marked by large, hemispheric, millennial-scale climate variations: the Bølling-Allerød and Younger Dryas periods in the north, and the Antarctic Cold Reversal in the south. A chronology from the high-accumulation Law Dome East Antarctic ice core constrains the relative timing of these two events and provides strong evidence that the cooling at the start of the Antarctic Cold Reversal did not follow the abrupt warming during the northern Bølling transition around 14,500 years ago. This result suggests that southern changes are not a direct response to abrupt changes in North Atlantic thermohaline circulation, as is assumed in the conventional picture of a hemispheric temperature seesaw. Article in Journal/Newspaper Antarc* Antarctic Antarctica Greenland ice core North Atlantic North atlantic Thermohaline circulation AAAS Resource Center (American Association for the Advancement of Science) Antarctic Greenland Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) The Antarctic Science 297 5588 1862 1864 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
The last deglaciation was marked by large, hemispheric, millennial-scale climate variations: the Bølling-Allerød and Younger Dryas periods in the north, and the Antarctic Cold Reversal in the south. A chronology from the high-accumulation Law Dome East Antarctic ice core constrains the relative timing of these two events and provides strong evidence that the cooling at the start of the Antarctic Cold Reversal did not follow the abrupt warming during the northern Bølling transition around 14,500 years ago. This result suggests that southern changes are not a direct response to abrupt changes in North Atlantic thermohaline circulation, as is assumed in the conventional picture of a hemispheric temperature seesaw. |
format |
Article in Journal/Newspaper |
author |
Morgan, Vin Delmotte, Marc van Ommen, Tas Jouzel, Jean Chappellaz, Jérôme Woon, Suenor Masson-Delmotte, Valérie Raynaud, Dominique |
spellingShingle |
Morgan, Vin Delmotte, Marc van Ommen, Tas Jouzel, Jean Chappellaz, Jérôme Woon, Suenor Masson-Delmotte, Valérie Raynaud, Dominique Relative Timing of Deglacial Climate Events in Antarctica and Greenland |
author_facet |
Morgan, Vin Delmotte, Marc van Ommen, Tas Jouzel, Jean Chappellaz, Jérôme Woon, Suenor Masson-Delmotte, Valérie Raynaud, Dominique |
author_sort |
Morgan, Vin |
title |
Relative Timing of Deglacial Climate Events in Antarctica and Greenland |
title_short |
Relative Timing of Deglacial Climate Events in Antarctica and Greenland |
title_full |
Relative Timing of Deglacial Climate Events in Antarctica and Greenland |
title_fullStr |
Relative Timing of Deglacial Climate Events in Antarctica and Greenland |
title_full_unstemmed |
Relative Timing of Deglacial Climate Events in Antarctica and Greenland |
title_sort |
relative timing of deglacial climate events in antarctica and greenland |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2002 |
url |
http://dx.doi.org/10.1126/science.1074257 https://www.science.org/doi/pdf/10.1126/science.1074257 |
long_lat |
ENVELOPE(112.833,112.833,-66.733,-66.733) |
geographic |
Antarctic Greenland Law Dome The Antarctic |
geographic_facet |
Antarctic Greenland Law Dome The Antarctic |
genre |
Antarc* Antarctic Antarctica Greenland ice core North Atlantic North atlantic Thermohaline circulation |
genre_facet |
Antarc* Antarctic Antarctica Greenland ice core North Atlantic North atlantic Thermohaline circulation |
op_source |
Science volume 297, issue 5588, page 1862-1864 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1074257 |
container_title |
Science |
container_volume |
297 |
container_issue |
5588 |
container_start_page |
1862 |
op_container_end_page |
1864 |
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1802651584741507072 |