Climate impacts of a weakened Atlantic Meridional Overturning Circulation in a warming climate
International audience While the Atlantic Meridional Overturning Circulation (AMOC) is projected to slow down under anthropogenic warming, the exact role of the AMOC in future climate change has not been fully quantified. Here, we present a method to stabilize the AMOC intensity in anthropogenic war...
Published in: | Science Advances |
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Main Authors: | , , , |
Other Authors: | , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://hal.science/hal-02922576 https://hal.science/hal-02922576/document https://hal.science/hal-02922576/file/eaaz4876.full.pdf https://doi.org/10.1126/sciadv.aaz4876 |
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Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
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ftuniversailles |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
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[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Liu, Wei Fedorov, Alexey V. Xie, Shang-Ping Hu, Shineng Climate impacts of a weakened Atlantic Meridional Overturning Circulation in a warming climate |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience While the Atlantic Meridional Overturning Circulation (AMOC) is projected to slow down under anthropogenic warming, the exact role of the AMOC in future climate change has not been fully quantified. Here, we present a method to stabilize the AMOC intensity in anthropogenic warming experiments by removing fresh water from the subpolar North Atlantic. This method enables us to isolate the AMOC climatic impacts in experiments with a fullphysics climate model. Our results show that a weakened AMOC can explain ocean cooling south of Greenland that resembles the North Atlantic warming hole and a reduced Arctic sea ice loss in all seasons with a delay of about 6 years in the emergence of an ice-free Arctic in boreal summer. In the troposphere, a weakened AMOC causes an anomalous cooling band stretching from the lower levels in high latitudes to the upper levels in the tropics and displaces the Northern Hemisphere midlatitude jets poleward. |
author2 |
Univ Calif Riverside, Dept Earth Sci, Riverside, CA 92521 USA Department of Geology and Geophysics New Haven Yale University New Haven Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Climate, Atmospheric Science and Physical Oceanography Department La Jolla (CASPO) Scripps Institution of Oceanography (SIO - UC San Diego) University of California San Diego (UC San Diego) University of California (UC)-University of California (UC)-University of California San Diego (UC San Diego) University of California (UC)-University of California (UC) Lamont-Doherty Earth Observatory (LDEO) Columbia University New York ANR-18-MPGA-0001,ARCHANGE,Changement climatique et Arctique et circulation océanique globale(2018) |
format |
Article in Journal/Newspaper |
author |
Liu, Wei Fedorov, Alexey V. Xie, Shang-Ping Hu, Shineng |
author_facet |
Liu, Wei Fedorov, Alexey V. Xie, Shang-Ping Hu, Shineng |
author_sort |
Liu, Wei |
title |
Climate impacts of a weakened Atlantic Meridional Overturning Circulation in a warming climate |
title_short |
Climate impacts of a weakened Atlantic Meridional Overturning Circulation in a warming climate |
title_full |
Climate impacts of a weakened Atlantic Meridional Overturning Circulation in a warming climate |
title_fullStr |
Climate impacts of a weakened Atlantic Meridional Overturning Circulation in a warming climate |
title_full_unstemmed |
Climate impacts of a weakened Atlantic Meridional Overturning Circulation in a warming climate |
title_sort |
climate impacts of a weakened atlantic meridional overturning circulation in a warming climate |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02922576 https://hal.science/hal-02922576/document https://hal.science/hal-02922576/file/eaaz4876.full.pdf https://doi.org/10.1126/sciadv.aaz4876 |
genre |
Arctic Climate change Greenland North Atlantic Sea ice |
genre_facet |
Arctic Climate change Greenland North Atlantic Sea ice |
op_source |
ISSN: 2375-2548 Science Advances https://hal.science/hal-02922576 Science Advances , 2020, 6 (26), pp.eaaz4876. ⟨10.1126/sciadv.aaz4876⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.1126/sciadv.aaz4876 hal-02922576 https://hal.science/hal-02922576 https://hal.science/hal-02922576/document https://hal.science/hal-02922576/file/eaaz4876.full.pdf doi:10.1126/sciadv.aaz4876 WOS: 000543504100010 |
op_rights |
http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1126/sciadv.aaz4876 |
container_title |
Science Advances |
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26 |
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eaaz4876 |
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ftuniversailles:oai:HAL:hal-02922576v1 2024-05-19T07:35:30+00:00 Climate impacts of a weakened Atlantic Meridional Overturning Circulation in a warming climate Liu, Wei Fedorov, Alexey V. Xie, Shang-Ping Hu, Shineng Univ Calif Riverside, Dept Earth Sci, Riverside, CA 92521 USA Department of Geology and Geophysics New Haven Yale University New Haven Océan et variabilité du climat (VARCLIM) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Climate, Atmospheric Science and Physical Oceanography Department La Jolla (CASPO) Scripps Institution of Oceanography (SIO - UC San Diego) University of California San Diego (UC San Diego) University of California (UC)-University of California (UC)-University of California San Diego (UC San Diego) University of California (UC)-University of California (UC) Lamont-Doherty Earth Observatory (LDEO) Columbia University New York ANR-18-MPGA-0001,ARCHANGE,Changement climatique et Arctique et circulation océanique globale(2018) 2020-06-26 https://hal.science/hal-02922576 https://hal.science/hal-02922576/document https://hal.science/hal-02922576/file/eaaz4876.full.pdf https://doi.org/10.1126/sciadv.aaz4876 en eng HAL CCSD American Association for the Advancement of Science (AAAS) info:eu-repo/semantics/altIdentifier/doi/10.1126/sciadv.aaz4876 hal-02922576 https://hal.science/hal-02922576 https://hal.science/hal-02922576/document https://hal.science/hal-02922576/file/eaaz4876.full.pdf doi:10.1126/sciadv.aaz4876 WOS: 000543504100010 http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess ISSN: 2375-2548 Science Advances https://hal.science/hal-02922576 Science Advances , 2020, 6 (26), pp.eaaz4876. ⟨10.1126/sciadv.aaz4876⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2020 ftuniversailles https://doi.org/10.1126/sciadv.aaz4876 2024-04-25T00:28:17Z International audience While the Atlantic Meridional Overturning Circulation (AMOC) is projected to slow down under anthropogenic warming, the exact role of the AMOC in future climate change has not been fully quantified. Here, we present a method to stabilize the AMOC intensity in anthropogenic warming experiments by removing fresh water from the subpolar North Atlantic. This method enables us to isolate the AMOC climatic impacts in experiments with a fullphysics climate model. Our results show that a weakened AMOC can explain ocean cooling south of Greenland that resembles the North Atlantic warming hole and a reduced Arctic sea ice loss in all seasons with a delay of about 6 years in the emergence of an ice-free Arctic in boreal summer. In the troposphere, a weakened AMOC causes an anomalous cooling band stretching from the lower levels in high latitudes to the upper levels in the tropics and displaces the Northern Hemisphere midlatitude jets poleward. Article in Journal/Newspaper Arctic Climate change Greenland North Atlantic Sea ice Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Science Advances 6 26 eaaz4876 |