Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation
International audience 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 CO 2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of...
Published in: | Nature Communications |
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Main Authors: | , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Subjects: | |
Online Access: | https://hal.science/hal-01495322 https://hal.science/hal-01495322/document https://hal.science/hal-01495322/file/ncomms3758.pdf https://doi.org/10.1038/ncomms3758 |
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Université de Nantes: HAL-UNIV-NANTES |
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English |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Siani, Giuseppe Michel, Elisabeth de Pol-Holz, Ricardo Devries, Tim Lamy, Frank Carel, Mélanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna Carbon isotope records reveal precise timing of enhanced Southern Ocean upwelling during the last deglaciation |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience 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 CO 2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of this deglacial CO 2 release are still under debate. Here we present measurements of deglacial surface reservoir 14 C age changes in the eastern Pacific sector of the Southern Ocean, obtained by 14 C dating of tephra deposited over the marine and terrestrial regions. These results, along with records of foraminifera benthic–planktic 14 C age and δ 13 C 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 CO 2 . These independently dated marine records suggest synchronous changes in the Southern Ocean circulation and Antarctic climate during the last deglaciation. |
author2 |
Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Paléocéanographie (PALEOCEAN) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Departamento de Oceanografía Concepción Universidad de Concepción - University of Concepcion Chile Department of Atmospheric and Oceanic Sciences Los Angeles (AOS) University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Siani, Giuseppe Michel, Elisabeth de Pol-Holz, Ricardo Devries, Tim Lamy, Frank Carel, Mélanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna |
author_facet |
Siani, Giuseppe Michel, Elisabeth de Pol-Holz, Ricardo Devries, Tim Lamy, Frank Carel, Mélanie 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 |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.science/hal-01495322 https://hal.science/hal-01495322/document https://hal.science/hal-01495322/file/ncomms3758.pdf https://doi.org/10.1038/ncomms3758 |
geographic |
Antarctic Pacific Southern Ocean |
geographic_facet |
Antarctic Pacific Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-01495322 Nature Communications, 2013, 118 (4), pp.2758. ⟨10.1038/ncomms3758⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms3758 hal-01495322 https://hal.science/hal-01495322 https://hal.science/hal-01495322/document https://hal.science/hal-01495322/file/ncomms3758.pdf doi:10.1038/ncomms3758 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/ncomms3758 |
container_title |
Nature Communications |
container_volume |
4 |
container_issue |
1 |
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1766245256328642560 |
spelling |
ftunivnantes:oai:HAL:hal-01495322v1 2023-05-15T13:46:49+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, Mélanie Isguder, Gulay Dewilde, Fabien Lourantou, Anna Interactions et dynamique des environnements de surface (IDES) Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Paléocéanographie (PALEOCEAN) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Departamento de Oceanografía Concepción Universidad de Concepción - University of Concepcion Chile Department of Atmospheric and Oceanic Sciences Los Angeles (AOS) University of California Los Angeles (UCLA) University of California (UC)-University of California (UC) Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2013 https://hal.science/hal-01495322 https://hal.science/hal-01495322/document https://hal.science/hal-01495322/file/ncomms3758.pdf https://doi.org/10.1038/ncomms3758 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/ncomms3758 hal-01495322 https://hal.science/hal-01495322 https://hal.science/hal-01495322/document https://hal.science/hal-01495322/file/ncomms3758.pdf doi:10.1038/ncomms3758 info:eu-repo/semantics/OpenAccess ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-01495322 Nature Communications, 2013, 118 (4), pp.2758. ⟨10.1038/ncomms3758⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2013 ftunivnantes https://doi.org/10.1038/ncomms3758 2023-02-01T01:13:44Z International audience 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 CO 2 to the atmosphere from a deep-ocean reservoir during the last deglaciation. However, the path and exact timing of this deglacial CO 2 release are still under debate. Here we present measurements of deglacial surface reservoir 14 C age changes in the eastern Pacific sector of the Southern Ocean, obtained by 14 C dating of tephra deposited over the marine and terrestrial regions. These results, along with records of foraminifera benthic–planktic 14 C age and δ 13 C 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 CO 2 . 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 Université de Nantes: HAL-UNIV-NANTES Antarctic Pacific Southern Ocean Nature Communications 4 1 |