Synchronous centennial abrupt events in the ocean and atmosphere during the last deglaciation
This study was funded by the European Research Council, the Philip Leverhulme Trust, the National Science Foundation and a Marie Curie Reintegration Grant. Antarctic ice-core data reveal that the atmosphere experienced abrupt centennial increases in CO2 concentration during the last deglaciation (~1...
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/7649 2023-07-02T03:29:45+02:00 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 NERC European Commission University of St Andrews. School of Earth & Environmental Sciences University of St Andrews. St Andrews Isotope Geochemistry University of St Andrews. Earth and Environmental Sciences 2015-10-14T10:40:04Z 5 application/pdf http://hdl.handle.net/10023/7649 https://doi.org/10.1126/science.aac6159 eng eng Science 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 0036-8075 PURE: 215438791 PURE UUID: b70b42d8-bb1b-43a9-b3b6-3fe7b39957ff Scopus: 84942317766 WOS: 000361707000047 ORCID: /0000-0002-3754-1498/work/64034540 http://hdl.handle.net/10023/7649 https://doi.org/10.1126/science.aac6159 NE/M004619/1 PCIG14-GA-2013-631752 Copyright © 2015 American Association for the Advancement of Science. All Rights Reserved. This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The final published version of this work is available at https://dx.doi.org/10.1126/science.aac6159 GC Oceanography GE Environmental Sciences NDAS BDC R2C SDG 13 - Climate Action GC GE Journal article 2015 ftstandrewserep https://doi.org/10.1126/science.aac6159 2023-06-13T18:27:45Z This study was funded by the European Research Council, the Philip Leverhulme Trust, the National Science Foundation and a Marie Curie Reintegration Grant. Antarctic ice-core data reveal that the atmosphere experienced abrupt centennial increases in CO2 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 CO2 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 Postprint Postprint Postprint Postprint Postprint Peer reviewed Article in Journal/Newspaper Antarc* Antarctic Drake Passage ice core University of St Andrews: Digital Research Repository Antarctic Drake Passage Science 349 6255 1537 1541 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
GC Oceanography GE Environmental Sciences NDAS BDC R2C SDG 13 - Climate Action GC GE |
spellingShingle |
GC Oceanography GE Environmental Sciences NDAS BDC R2C SDG 13 - Climate Action GC GE 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 |
topic_facet |
GC Oceanography GE Environmental Sciences NDAS BDC R2C SDG 13 - Climate Action GC GE |
description |
This study was funded by the European Research Council, the Philip Leverhulme Trust, the National Science Foundation and a Marie Curie Reintegration Grant. Antarctic ice-core data reveal that the atmosphere experienced abrupt centennial increases in CO2 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 CO2 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 Postprint Postprint Postprint Postprint Postprint Peer reviewed |
author2 |
NERC European Commission University of St Andrews. School of Earth & Environmental Sciences University of St Andrews. St Andrews Isotope Geochemistry University of St Andrews. Earth and Environmental Sciences |
format |
Article in Journal/Newspaper |
author |
Chen, Tianyu Robinson, Laura F. Burke, Andrea Southon, John Spooner, Peter Morris, Paul J. Ng, Hong Chin |
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 |
http://hdl.handle.net/10023/7649 https://doi.org/10.1126/science.aac6159 |
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_relation |
Science 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 0036-8075 PURE: 215438791 PURE UUID: b70b42d8-bb1b-43a9-b3b6-3fe7b39957ff Scopus: 84942317766 WOS: 000361707000047 ORCID: /0000-0002-3754-1498/work/64034540 http://hdl.handle.net/10023/7649 https://doi.org/10.1126/science.aac6159 NE/M004619/1 PCIG14-GA-2013-631752 |
op_rights |
Copyright © 2015 American Association for the Advancement of Science. All Rights Reserved. This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The final published version of this work is available at https://dx.doi.org/10.1126/science.aac6159 |
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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1770272481486045184 |