Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation
The Southern Ocean plays a prominent role in the Earth's climate and carbon cycle. Changes in the Southern Ocean circulation may have regulated the release of CO2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of this deglacial CO2...
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ftarchimer:oai:archimer.ifremer.fr:37472 2023-05-15T13:50:50+02:00 Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation Siani, Giuseppe Michel, Elisabeth De Pol-holz, Ricardo Devries, Tim Lamy, Frank Carel, Melanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna 2013-11 application/pdf https://archimer.ifremer.fr/doc/00263/37472/36804.pdf https://archimer.ifremer.fr/doc/00263/37472/36819.pdf https://doi.org/10.1038/ncomms3758 https://archimer.ifremer.fr/doc/00263/37472/ eng eng Nature Publishing Group https://archimer.ifremer.fr/doc/00263/37472/36804.pdf https://archimer.ifremer.fr/doc/00263/37472/36819.pdf doi:10.1038/ncomms3758 https://archimer.ifremer.fr/doc/00263/37472/ 2013 Macmillan Publishers Limited. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use Nature Communications (2041-1723) (Nature Publishing Group), 2013-11 , Vol. 4 , N. 2758 text Publication info:eu-repo/semantics/article 2013 ftarchimer https://doi.org/10.1038/ncomms3758 2021-09-23T20:26:05Z The Southern Ocean plays a prominent role in the Earth's climate and carbon cycle. Changes in the Southern Ocean circulation may have regulated the release of CO2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of this deglacial CO2 release are still under debate. Here we present measurements of deglacial surface reservoir C-14 age changes in the eastern Pacific sector of the Southern Ocean, obtained by C-14 dating of tephra deposited over the marine and terrestrial regions. These results, along with records of foraminifera benthic-planktic C-14 age and delta C-13 difference, provide evidence for three periods of enhanced upwelling in the Southern Ocean during the last deglaciation, supporting the hypothesis that Southern Ocean upwelling contributed to the deglacial rise in atmospheric CO2. These independently dated marine records suggest synchronous changes in the Southern Ocean circulation and Antarctic climate during the last deglaciation. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic Pacific Southern Ocean Nature Communications 4 1 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
The Southern Ocean plays a prominent role in the Earth's climate and carbon cycle. Changes in the Southern Ocean circulation may have regulated the release of CO2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of this deglacial CO2 release are still under debate. Here we present measurements of deglacial surface reservoir C-14 age changes in the eastern Pacific sector of the Southern Ocean, obtained by C-14 dating of tephra deposited over the marine and terrestrial regions. These results, along with records of foraminifera benthic-planktic C-14 age and delta C-13 difference, provide evidence for three periods of enhanced upwelling in the Southern Ocean during the last deglaciation, supporting the hypothesis that Southern Ocean upwelling contributed to the deglacial rise in atmospheric CO2. These independently dated marine records suggest synchronous changes in the Southern Ocean circulation and Antarctic climate during the last deglaciation. |
format |
Article in Journal/Newspaper |
author |
Siani, Giuseppe Michel, Elisabeth De Pol-holz, Ricardo Devries, Tim Lamy, Frank Carel, Melanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna |
spellingShingle |
Siani, Giuseppe Michel, Elisabeth De Pol-holz, Ricardo Devries, Tim Lamy, Frank Carel, Melanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
author_facet |
Siani, Giuseppe Michel, Elisabeth De Pol-holz, Ricardo Devries, Tim Lamy, Frank Carel, Melanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna |
author_sort |
Siani, Giuseppe |
title |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_short |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_full |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_fullStr |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_full_unstemmed |
Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
title_sort |
carbon isotope records reveal precise timing of enhanced southern ocean upwelling during the last deglaciation |
publisher |
Nature Publishing Group |
publishDate |
2013 |
url |
https://archimer.ifremer.fr/doc/00263/37472/36804.pdf https://archimer.ifremer.fr/doc/00263/37472/36819.pdf https://doi.org/10.1038/ncomms3758 https://archimer.ifremer.fr/doc/00263/37472/ |
geographic |
Antarctic Pacific Southern Ocean |
geographic_facet |
Antarctic Pacific Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Nature Communications (2041-1723) (Nature Publishing Group), 2013-11 , Vol. 4 , N. 2758 |
op_relation |
https://archimer.ifremer.fr/doc/00263/37472/36804.pdf https://archimer.ifremer.fr/doc/00263/37472/36819.pdf doi:10.1038/ncomms3758 https://archimer.ifremer.fr/doc/00263/37472/ |
op_rights |
2013 Macmillan Publishers Limited. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1038/ncomms3758 |
container_title |
Nature Communications |
container_volume |
4 |
container_issue |
1 |
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1766254137546113024 |