Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation
Antarctic ice-core data reveal that the atmosphere experienced abrupt centennial increases in CO 2 concentration during the last deglaciation (~18-11 thousand years, ka). Establishing the role of ocean circulation in these changes requires high-resolution, accurately-dated marine records. Here we re...
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2015
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Online Access: | https://research-portal.st-andrews.ac.uk/en/publications/b70b42d8-bb1b-43a9-b3b6-3fe7b39957ff https://doi.org/10.1126/science.aac6159 https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/5/Burke_2015_Science_Synchronous_AM.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/4/Burke_2015_Science_Synchronous_Supplement_AM.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/1/figure_1.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/3/figure_2.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/2/figure_3.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/b70b42d8-bb1b-43a9-b3b6-3fe7b39957ff 2024-10-13T14:03:23+00:00 Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation Chen, Tianyu Robinson, Laura F. Burke, Andrea Southon, John Spooner, Peter Morris, Paul J. Ng, Hong Chin 2015-09-25 application/pdf https://research-portal.st-andrews.ac.uk/en/publications/b70b42d8-bb1b-43a9-b3b6-3fe7b39957ff https://doi.org/10.1126/science.aac6159 https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/5/Burke_2015_Science_Synchronous_AM.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/4/Burke_2015_Science_Synchronous_Supplement_AM.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/1/figure_1.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/3/figure_2.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/2/figure_3.pdf eng eng info:eu-repo/semantics/openAccess Chen , T , Robinson , L F , Burke , A , Southon , J , Spooner , P , Morris , P J & Ng , H C 2015 , ' Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation ' , Science , vol. 349 , no. 6255 , pp. 1537-1541 . https://doi.org/10.1126/science.aac6159 article 2015 ftunstandrewcris https://doi.org/10.1126/science.aac6159 2024-10-02T23:40:44Z Antarctic ice-core data reveal that the atmosphere experienced abrupt centennial increases in CO 2 concentration during the last deglaciation (~18-11 thousand years, ka). Establishing the role of ocean circulation in these changes requires high-resolution, accurately-dated marine records. Here we report radiocarbon data from uranium-thorium dated deep-sea corals in the Equatorial Atlantic and Drake Passage over the last 25 ka. Two major deglacial radiocarbon increases occurred in phase with centennial atmospheric CO 2 rises at 14.8 ka and 11.7 ka. We interpret these radiocarbon-enriched signals to represent two short-lived (<500 years) ‘overshoot’ events with Atlantic meridional overturning stronger than modern. These results provide compelling evidence for a close coupling of ocean circulation and centennial climate events during the last deglaciation Article in Journal/Newspaper Antarc* Antarctic Drake Passage ice core University of St Andrews: Research Portal Antarctic Drake Passage Science 349 6255 1537 1541 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
description |
Antarctic ice-core data reveal that the atmosphere experienced abrupt centennial increases in CO 2 concentration during the last deglaciation (~18-11 thousand years, ka). Establishing the role of ocean circulation in these changes requires high-resolution, accurately-dated marine records. Here we report radiocarbon data from uranium-thorium dated deep-sea corals in the Equatorial Atlantic and Drake Passage over the last 25 ka. Two major deglacial radiocarbon increases occurred in phase with centennial atmospheric CO 2 rises at 14.8 ka and 11.7 ka. We interpret these radiocarbon-enriched signals to represent two short-lived (<500 years) ‘overshoot’ events with Atlantic meridional overturning stronger than modern. These results provide compelling evidence for a close coupling of ocean circulation and centennial climate events during the last deglaciation |
format |
Article in Journal/Newspaper |
author |
Chen, Tianyu Robinson, Laura F. Burke, Andrea Southon, John Spooner, Peter Morris, Paul J. Ng, Hong Chin |
spellingShingle |
Chen, Tianyu Robinson, Laura F. Burke, Andrea Southon, John Spooner, Peter Morris, Paul J. Ng, Hong Chin Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation |
author_facet |
Chen, Tianyu Robinson, Laura F. Burke, Andrea Southon, John Spooner, Peter Morris, Paul J. Ng, Hong Chin |
author_sort |
Chen, Tianyu |
title |
Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation |
title_short |
Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation |
title_full |
Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation |
title_fullStr |
Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation |
title_full_unstemmed |
Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation |
title_sort |
synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation |
publishDate |
2015 |
url |
https://research-portal.st-andrews.ac.uk/en/publications/b70b42d8-bb1b-43a9-b3b6-3fe7b39957ff https://doi.org/10.1126/science.aac6159 https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/5/Burke_2015_Science_Synchronous_AM.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/4/Burke_2015_Science_Synchronous_Supplement_AM.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/1/figure_1.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/3/figure_2.pdf https://research-repository.st-andrews.ac.uk/bitstream/10023/7649/2/figure_3.pdf |
geographic |
Antarctic Drake Passage |
geographic_facet |
Antarctic Drake Passage |
genre |
Antarc* Antarctic Drake Passage ice core |
genre_facet |
Antarc* Antarctic Drake Passage ice core |
op_source |
Chen , T , Robinson , L F , Burke , A , Southon , J , Spooner , P , Morris , P J & Ng , H C 2015 , ' Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation ' , Science , vol. 349 , no. 6255 , pp. 1537-1541 . https://doi.org/10.1126/science.aac6159 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1126/science.aac6159 |
container_title |
Science |
container_volume |
349 |
container_issue |
6255 |
container_start_page |
1537 |
op_container_end_page |
1541 |
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1812808337177182208 |