Sensitivity of the Atlantic Meridional Overturning Circulation to the melting from northern glaciers in climate change experiments
International audience A weakening of the Atlantic Meridional Overturning Circulation (AMOC) in the next century is simulated by most state-of-the-art coupled models but none of them accounted for land-ice melting. Here we evaluate the impact of this melting on future climate projection using the IP...
Published in: | Geophysical Research Letters |
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Online Access: | https://hal.science/hal-03023546 https://hal.science/hal-03023546/document https://hal.science/hal-03023546/file/2006GL025765.pdf https://doi.org/10.1029/2006GL025765 |
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ftceafr:oai:HAL:hal-03023546v1 2024-06-09T07:49:29+00:00 Sensitivity of the Atlantic Meridional Overturning Circulation to the melting from northern glaciers in climate change experiments Swingedouw, D. Braconnot, P. Marti, O. 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) Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID) 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)) 2006 https://hal.science/hal-03023546 https://hal.science/hal-03023546/document https://hal.science/hal-03023546/file/2006GL025765.pdf https://doi.org/10.1029/2006GL025765 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2006GL025765 hal-03023546 https://hal.science/hal-03023546 https://hal.science/hal-03023546/document https://hal.science/hal-03023546/file/2006GL025765.pdf doi:10.1029/2006GL025765 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03023546 Geophysical Research Letters, 2006, 33 (7), pp.L07711. ⟨10.1029/2006GL025765⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2006 ftceafr https://doi.org/10.1029/2006GL025765 2024-05-16T14:46:16Z International audience A weakening of the Atlantic Meridional Overturning Circulation (AMOC) in the next century is simulated by most state-of-the-art coupled models but none of them accounted for land-ice melting. Here we evaluate the impact of this melting on future climate projection using the IPSL-CM4 coupled ocean-atmosphere model. For this purpose we use two different versions of the model, one with a crude land-ice melting parameterization, and the other without. The analysis compares results of experiments where atmospheric CO 2 increases by 1%/yr, performed with the two versions of this model. The AMOC is reduced by 47% when the melting of land-ice is considered, and represents an extreme melting scenario. This reduction is of 21% without this melting. It is shown that this difference in AMOC impacts the northern hemisphere mostly through the sea-ice cover feedback. Article in Journal/Newspaper Sea ice HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Geophysical Research Letters 33 7 |
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Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Swingedouw, D. Braconnot, P. Marti, O. Sensitivity of the Atlantic Meridional Overturning Circulation to the melting from northern glaciers in climate change experiments |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience A weakening of the Atlantic Meridional Overturning Circulation (AMOC) in the next century is simulated by most state-of-the-art coupled models but none of them accounted for land-ice melting. Here we evaluate the impact of this melting on future climate projection using the IPSL-CM4 coupled ocean-atmosphere model. For this purpose we use two different versions of the model, one with a crude land-ice melting parameterization, and the other without. The analysis compares results of experiments where atmospheric CO 2 increases by 1%/yr, performed with the two versions of this model. The AMOC is reduced by 47% when the melting of land-ice is considered, and represents an extreme melting scenario. This reduction is of 21% without this melting. It is shown that this difference in AMOC impacts the northern hemisphere mostly through the sea-ice cover feedback. |
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) Modelling the Earth Response to Multiple Anthropogenic Interactions and Dynamics (MERMAID) 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)) |
format |
Article in Journal/Newspaper |
author |
Swingedouw, D. Braconnot, P. Marti, O. |
author_facet |
Swingedouw, D. Braconnot, P. Marti, O. |
author_sort |
Swingedouw, D. |
title |
Sensitivity of the Atlantic Meridional Overturning Circulation to the melting from northern glaciers in climate change experiments |
title_short |
Sensitivity of the Atlantic Meridional Overturning Circulation to the melting from northern glaciers in climate change experiments |
title_full |
Sensitivity of the Atlantic Meridional Overturning Circulation to the melting from northern glaciers in climate change experiments |
title_fullStr |
Sensitivity of the Atlantic Meridional Overturning Circulation to the melting from northern glaciers in climate change experiments |
title_full_unstemmed |
Sensitivity of the Atlantic Meridional Overturning Circulation to the melting from northern glaciers in climate change experiments |
title_sort |
sensitivity of the atlantic meridional overturning circulation to the melting from northern glaciers in climate change experiments |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-03023546 https://hal.science/hal-03023546/document https://hal.science/hal-03023546/file/2006GL025765.pdf https://doi.org/10.1029/2006GL025765 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03023546 Geophysical Research Letters, 2006, 33 (7), pp.L07711. ⟨10.1029/2006GL025765⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2006GL025765 hal-03023546 https://hal.science/hal-03023546 https://hal.science/hal-03023546/document https://hal.science/hal-03023546/file/2006GL025765.pdf doi:10.1029/2006GL025765 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2006GL025765 |
container_title |
Geophysical Research Letters |
container_volume |
33 |
container_issue |
7 |
_version_ |
1801382093796671488 |