Ventilation of the deep Southern Ocean and deglacial CO 2 rise
International audience Past glacial-interglacial increases in the concentration of atmospheric carbon dioxide (CO$_2$ ) are thought to arise from the rapid release of CO$_2$ sequestered in the deep sea, primarily via the Southern Ocean. Here, we present radiocarbon evidence from the Atlantic sector...
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Online Access: | https://hal-cea.archives-ouvertes.fr/cea-00818324 https://doi.org/10.1126/science.1183627 |
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ftccsdartic:oai:HAL:cea-00818324v1 2023-05-15T13:37:47+02:00 Ventilation of the deep Southern Ocean and deglacial CO 2 rise Skinner, Luke C. Fallon, Stewart J. Waelbroeck, C. Michel, Elisabeth Barker, Stephen Department of Earth Sciences Cambridge, UK University of Cambridge UK (CAM) Research School of Earth Sciences Canberra (RSES) Australian National University (ANU) Paléocéanographie (PALEOCEAN) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) School of Earth and Ocean Sciences Cardiff Cardiff University 2010 https://hal-cea.archives-ouvertes.fr/cea-00818324 https://doi.org/10.1126/science.1183627 en eng HAL CCSD American Association for the Advancement of Science info:eu-repo/semantics/altIdentifier/doi/10.1126/science.1183627 info:eu-repo/semantics/altIdentifier/pmid/20508128 cea-00818324 https://hal-cea.archives-ouvertes.fr/cea-00818324 doi:10.1126/science.1183627 PUBMED: 20508128 WOS: 000278104700041 ISSN: 0036-8075 EISSN: 1095-9203 Science https://hal-cea.archives-ouvertes.fr/cea-00818324 Science, American Association for the Advancement of Science, 2010, 328 (5892), pp.1147. ⟨10.1126/science.1183627⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2010 ftccsdartic https://doi.org/10.1126/science.1183627 2021-12-19T03:18:11Z International audience Past glacial-interglacial increases in the concentration of atmospheric carbon dioxide (CO$_2$ ) are thought to arise from the rapid release of CO$_2$ sequestered in the deep sea, primarily via the Southern Ocean. Here, we present radiocarbon evidence from the Atlantic sector of the Southern Ocean that strongly supports this hypothesis. We show that during the last glacial period, deep water circulating around Antarctica was more than two timesolder than today relative to the atmosphere.During deglaciation, the dissipation of this old and presumably CO$_2$ -enriched deep water played an important role in the pulsed rise of atmospheric CO$_2$ through its variable influence on the upwelling branch of the Antarctic overturning circulation. Article in Journal/Newspaper Antarc* Antarctic Antarctica Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Southern Ocean The Antarctic Science 328 5982 1147 1151 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Skinner, Luke C. Fallon, Stewart J. Waelbroeck, C. Michel, Elisabeth Barker, Stephen Ventilation of the deep Southern Ocean and deglacial CO 2 rise |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Past glacial-interglacial increases in the concentration of atmospheric carbon dioxide (CO$_2$ ) are thought to arise from the rapid release of CO$_2$ sequestered in the deep sea, primarily via the Southern Ocean. Here, we present radiocarbon evidence from the Atlantic sector of the Southern Ocean that strongly supports this hypothesis. We show that during the last glacial period, deep water circulating around Antarctica was more than two timesolder than today relative to the atmosphere.During deglaciation, the dissipation of this old and presumably CO$_2$ -enriched deep water played an important role in the pulsed rise of atmospheric CO$_2$ through its variable influence on the upwelling branch of the Antarctic overturning circulation. |
author2 |
Department of Earth Sciences Cambridge, UK University of Cambridge UK (CAM) Research School of Earth Sciences Canberra (RSES) Australian National University (ANU) Paléocéanographie (PALEOCEAN) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) School of Earth and Ocean Sciences Cardiff Cardiff University |
format |
Article in Journal/Newspaper |
author |
Skinner, Luke C. Fallon, Stewart J. Waelbroeck, C. Michel, Elisabeth Barker, Stephen |
author_facet |
Skinner, Luke C. Fallon, Stewart J. Waelbroeck, C. Michel, Elisabeth Barker, Stephen |
author_sort |
Skinner, Luke C. |
title |
Ventilation of the deep Southern Ocean and deglacial CO 2 rise |
title_short |
Ventilation of the deep Southern Ocean and deglacial CO 2 rise |
title_full |
Ventilation of the deep Southern Ocean and deglacial CO 2 rise |
title_fullStr |
Ventilation of the deep Southern Ocean and deglacial CO 2 rise |
title_full_unstemmed |
Ventilation of the deep Southern Ocean and deglacial CO 2 rise |
title_sort |
ventilation of the deep southern ocean and deglacial co 2 rise |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal-cea.archives-ouvertes.fr/cea-00818324 https://doi.org/10.1126/science.1183627 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Southern Ocean |
op_source |
ISSN: 0036-8075 EISSN: 1095-9203 Science https://hal-cea.archives-ouvertes.fr/cea-00818324 Science, American Association for the Advancement of Science, 2010, 328 (5892), pp.1147. ⟨10.1126/science.1183627⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1126/science.1183627 info:eu-repo/semantics/altIdentifier/pmid/20508128 cea-00818324 https://hal-cea.archives-ouvertes.fr/cea-00818324 doi:10.1126/science.1183627 PUBMED: 20508128 WOS: 000278104700041 |
op_doi |
https://doi.org/10.1126/science.1183627 |
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Science |
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328 |
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5982 |
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1147 |
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1151 |
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