Effect of land-ice melting and associated changes in the AMOC result in little overall impact on oceanic CO 2 uptake
International audience The impact of Greenland Ice Sheet (GIS) melting and associated weakening in the Atlantic Meridional Overturning Circulation (AMOC) on carbon uptake is quantitatively evaluated using coupled climate and biogeochemistry models. We compare two 140-yr global warming scenarios, for...
Published in: | Geophysical Research Letters |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-03023504 https://hal.science/hal-03023504/document https://hal.science/hal-03023504/file/2007GL031990.pdf https://doi.org/10.1029/2007GL031990 |
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ftceafr:oai:HAL:hal-03023504v1 2024-09-15T18:09:49+00:00 Effect of land-ice melting and associated changes in the AMOC result in little overall impact on oceanic CO 2 uptake Swingedouw, D. Bopp, L. Matras, A. Braconnot, P. 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)) 2007 https://hal.science/hal-03023504 https://hal.science/hal-03023504/document https://hal.science/hal-03023504/file/2007GL031990.pdf https://doi.org/10.1029/2007GL031990 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GL031990 hal-03023504 https://hal.science/hal-03023504 https://hal.science/hal-03023504/document https://hal.science/hal-03023504/file/2007GL031990.pdf doi:10.1029/2007GL031990 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03023504 Geophysical Research Letters, 2007, 34 (23), pp.L23706. ⟨10.1029/2007GL031990⟩ [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 2007 ftceafr https://doi.org/10.1029/2007GL031990 2024-07-22T13:17:13Z International audience The impact of Greenland Ice Sheet (GIS) melting and associated weakening in the Atlantic Meridional Overturning Circulation (AMOC) on carbon uptake is quantitatively evaluated using coupled climate and biogeochemistry models. We compare two 140-yr global warming scenarios, forced by the same increase in atmospheric CO 2 , but with different GIS melting rates. The AMOC weakening in our 2 scenarios is À47% and À21% at 4 Â CO 2 when the melting of GIS is or is not considered, respectively. We find that GIS melting and AMOC-induced weakening have little influence on the CO 2 uptake. By isolating the specific effects of salinity and temperature changes on carbon uptake, we find that opposing processes tend to limit the effect of GIS melting. Indeed, in the GIS melting scenario, less saline and cooler waters in high latitudes northern seas tend to increase CO 2 uptake and counterbalance the decreasing CO 2 uptake that follows from circulation changes alone. Article in Journal/Newspaper Greenland Ice Sheet HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Geophysical Research Letters 34 23 n/a n/a |
institution |
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. Bopp, L. Matras, A. Braconnot, P. Effect of land-ice melting and associated changes in the AMOC result in little overall impact on oceanic CO 2 uptake |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The impact of Greenland Ice Sheet (GIS) melting and associated weakening in the Atlantic Meridional Overturning Circulation (AMOC) on carbon uptake is quantitatively evaluated using coupled climate and biogeochemistry models. We compare two 140-yr global warming scenarios, forced by the same increase in atmospheric CO 2 , but with different GIS melting rates. The AMOC weakening in our 2 scenarios is À47% and À21% at 4 Â CO 2 when the melting of GIS is or is not considered, respectively. We find that GIS melting and AMOC-induced weakening have little influence on the CO 2 uptake. By isolating the specific effects of salinity and temperature changes on carbon uptake, we find that opposing processes tend to limit the effect of GIS melting. Indeed, in the GIS melting scenario, less saline and cooler waters in high latitudes northern seas tend to increase CO 2 uptake and counterbalance the decreasing CO 2 uptake that follows from circulation changes alone. |
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. Bopp, L. Matras, A. Braconnot, P. |
author_facet |
Swingedouw, D. Bopp, L. Matras, A. Braconnot, P. |
author_sort |
Swingedouw, D. |
title |
Effect of land-ice melting and associated changes in the AMOC result in little overall impact on oceanic CO 2 uptake |
title_short |
Effect of land-ice melting and associated changes in the AMOC result in little overall impact on oceanic CO 2 uptake |
title_full |
Effect of land-ice melting and associated changes in the AMOC result in little overall impact on oceanic CO 2 uptake |
title_fullStr |
Effect of land-ice melting and associated changes in the AMOC result in little overall impact on oceanic CO 2 uptake |
title_full_unstemmed |
Effect of land-ice melting and associated changes in the AMOC result in little overall impact on oceanic CO 2 uptake |
title_sort |
effect of land-ice melting and associated changes in the amoc result in little overall impact on oceanic co 2 uptake |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-03023504 https://hal.science/hal-03023504/document https://hal.science/hal-03023504/file/2007GL031990.pdf https://doi.org/10.1029/2007GL031990 |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-03023504 Geophysical Research Letters, 2007, 34 (23), pp.L23706. ⟨10.1029/2007GL031990⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GL031990 hal-03023504 https://hal.science/hal-03023504 https://hal.science/hal-03023504/document https://hal.science/hal-03023504/file/2007GL031990.pdf doi:10.1029/2007GL031990 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2007GL031990 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
23 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1810447408119676928 |