Ventilation of the deep Southern Ocean and deglacial CO2 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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fttriple:oai:gotriple.eu:10670/1.k111x3 2023-05-15T13:38:15+02:00 Ventilation of the deep Southern Ocean and deglacial CO2 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 2010-01-01 https://doi.org/10.1126/science.1183627 https://hal-cea.archives-ouvertes.fr/cea-00818324 en eng HAL CCSD American Association for the Advancement of Science cea-00818324 doi:10.1126/science.1183627 WOS: 000278104700041 PUBMED: 20508128 10670/1.k111x3 https://hal-cea.archives-ouvertes.fr/cea-00818324 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0036-8075 EISSN: 1095-9203 Science Science, American Association for the Advancement of Science, 2010, 328 (5892), pp.1147. ⟨10.1126/science.1183627⟩ geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2010 fttriple https://doi.org/10.1126/science.1183627 2023-01-22T18:49:19Z 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 Unknown Antarctic Southern Ocean The Antarctic Science 328 5982 1147 1151 |
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geo envir Skinner, Luke C. Fallon, Stewart J. Waelbroeck, C. Michel, Elisabeth Barker, Stephen Ventilation of the deep Southern Ocean and deglacial CO2 rise |
topic_facet |
geo envir |
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 CO2 rise |
title_short |
Ventilation of the deep Southern Ocean and deglacial CO2 rise |
title_full |
Ventilation of the deep Southern Ocean and deglacial CO2 rise |
title_fullStr |
Ventilation of the deep Southern Ocean and deglacial CO2 rise |
title_full_unstemmed |
Ventilation of the deep Southern Ocean and deglacial CO2 rise |
title_sort |
ventilation of the deep southern ocean and deglacial co2 rise |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://doi.org/10.1126/science.1183627 https://hal-cea.archives-ouvertes.fr/cea-00818324 |
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 |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0036-8075 EISSN: 1095-9203 Science Science, American Association for the Advancement of Science, 2010, 328 (5892), pp.1147. ⟨10.1126/science.1183627⟩ |
op_relation |
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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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