Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase
International audience A coupled climate-ice-sheet model is used to investigate the response of climate at the millennial time scale under several global warming long-term scenarios, stabilized at different levels ranging from 2 to 7 times the pre-industrial CO2 level. The climate response is mainly...
Published in: | Global and Planetary Change |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2011
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Online Access: | https://insu.hal.science/insu-00646031 https://doi.org/10.1016/j.gloplacha.2010.12.004 |
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ftunigrenoble:oai:HAL:insu-00646031v1 |
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Open Polar |
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Université Grenoble Alpes: HAL |
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ftunigrenoble |
language |
English |
topic |
millennial oscillations climate variability abrupt change global warming ice sheets ocean behaviour Southern Ocean [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
millennial oscillations climate variability abrupt change global warming ice sheets ocean behaviour Southern Ocean [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Alvarez-Solas, J. Charbit, S. Ramstein, G. Paillard, D. Dumas, C. Ritz, C. Roche, Didier M. Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase |
topic_facet |
millennial oscillations climate variability abrupt change global warming ice sheets ocean behaviour Southern Ocean [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience A coupled climate-ice-sheet model is used to investigate the response of climate at the millennial time scale under several global warming long-term scenarios, stabilized at different levels ranging from 2 to 7 times the pre-industrial CO2 level. The climate response is mainly analyzed in terms of changes in temperature, oceanic circulation, and ice-sheet behaviour. For the 4 x CO2 scenario, the climate response appears to be highly non-linear: abrupt transitions occur in the Southern Ocean deep water formation strength with a period of about 1200 yr. These millennial oscillations do not occur for both lower and larger CO2 levels. We show that these transitions are associated with internal oscillations of the Southern Ocean, triggered by the Antarctic freshwater budget. We first analyse the oscillatory mechanism. Secondly, through a series of 420 sensitivity experiments we also explore the range of temperature and freshwater flux for which such oscillations can be triggered. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) LEFE/CASTOR, the Research Training Network NICE ANR-05-BLAN-0310,IDEGLACE,Impact de Décharges d'Eau douce provenant de la GLace continentale sur le Climat Européen et méditerranéen(2005) |
format |
Article in Journal/Newspaper |
author |
Alvarez-Solas, J. Charbit, S. Ramstein, G. Paillard, D. Dumas, C. Ritz, C. Roche, Didier M. |
author_facet |
Alvarez-Solas, J. Charbit, S. Ramstein, G. Paillard, D. Dumas, C. Ritz, C. Roche, Didier M. |
author_sort |
Alvarez-Solas, J. |
title |
Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase |
title_short |
Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase |
title_full |
Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase |
title_fullStr |
Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase |
title_full_unstemmed |
Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase |
title_sort |
millennial-scale oscillations in the southern ocean in response to atmospheric co2 increase |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://insu.hal.science/insu-00646031 https://doi.org/10.1016/j.gloplacha.2010.12.004 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Southern Ocean |
op_source |
ISSN: 0921-8181 Global and Planetary Change https://insu.hal.science/insu-00646031 Global and Planetary Change, 2011, 76 (3-4), pp.128-136. ⟨10.1016/j.gloplacha.2010.12.004⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2010.12.004 insu-00646031 https://insu.hal.science/insu-00646031 doi:10.1016/j.gloplacha.2010.12.004 |
op_doi |
https://doi.org/10.1016/j.gloplacha.2010.12.004 |
container_title |
Global and Planetary Change |
container_volume |
76 |
container_issue |
3-4 |
container_start_page |
128 |
op_container_end_page |
136 |
_version_ |
1798836167842463744 |
spelling |
ftunigrenoble:oai:HAL:insu-00646031v1 2024-05-12T07:56:12+00:00 Millennial-scale oscillations in the Southern Ocean in response to atmospheric CO2 increase Alvarez-Solas, J. Charbit, S. Ramstein, G. Paillard, D. Dumas, C. Ritz, C. Roche, Didier M. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Modélisation du climat (CLIM) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) LEFE/CASTOR, the Research Training Network NICE ANR-05-BLAN-0310,IDEGLACE,Impact de Décharges d'Eau douce provenant de la GLace continentale sur le Climat Européen et méditerranéen(2005) 2011 https://insu.hal.science/insu-00646031 https://doi.org/10.1016/j.gloplacha.2010.12.004 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.gloplacha.2010.12.004 insu-00646031 https://insu.hal.science/insu-00646031 doi:10.1016/j.gloplacha.2010.12.004 ISSN: 0921-8181 Global and Planetary Change https://insu.hal.science/insu-00646031 Global and Planetary Change, 2011, 76 (3-4), pp.128-136. ⟨10.1016/j.gloplacha.2010.12.004⟩ millennial oscillations climate variability abrupt change global warming ice sheets ocean behaviour Southern Ocean [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2011 ftunigrenoble https://doi.org/10.1016/j.gloplacha.2010.12.004 2024-04-18T02:25:59Z International audience A coupled climate-ice-sheet model is used to investigate the response of climate at the millennial time scale under several global warming long-term scenarios, stabilized at different levels ranging from 2 to 7 times the pre-industrial CO2 level. The climate response is mainly analyzed in terms of changes in temperature, oceanic circulation, and ice-sheet behaviour. For the 4 x CO2 scenario, the climate response appears to be highly non-linear: abrupt transitions occur in the Southern Ocean deep water formation strength with a period of about 1200 yr. These millennial oscillations do not occur for both lower and larger CO2 levels. We show that these transitions are associated with internal oscillations of the Southern Ocean, triggered by the Antarctic freshwater budget. We first analyse the oscillatory mechanism. Secondly, through a series of 420 sensitivity experiments we also explore the range of temperature and freshwater flux for which such oscillations can be triggered. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Southern Ocean Université Grenoble Alpes: HAL Antarctic Southern Ocean The Antarctic Global and Planetary Change 76 3-4 128 136 |