Ocean circulation causes the largest freshening event for 120 years in eastern subpolar North Atlantic
International audience The Atlantic Ocean overturning circulation is important to the climate system because it carries heat and carbon northward, and from the surface to the deep ocean. The high salinity of the subpolar North Atlantic is a prerequisite for overturning circulation, and strong freshe...
Published in: | Nature Communications |
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Main Authors: | , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.science/hal-03147373 https://hal.science/hal-03147373/document https://hal.science/hal-03147373/file/s41467-020-14474-y.pdf https://doi.org/10.1038/s41467-020-14474-y |
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ftmuseumnhn:oai:HAL:hal-03147373v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
Muséum National d'Histoire Naturelle (MNHM): HAL |
op_collection_id |
ftmuseumnhn |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] Holliday, N. Penny Bersch, Manfred Berx, Barbara Chafik, Léon Cunningham, Stuart Florindo-López, Cristian Hátún, Hjálmar Johns, William Josey, Simon Larsen, Karin Margretha H. Mulet, Sandrine Oltmanns, Marilena Reverdin, Gilles Rossby, Tom Thierry, Virginie Valdimarsson, Hedinn Yashayaev, Igor Ocean circulation causes the largest freshening event for 120 years in eastern subpolar North Atlantic |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] |
description |
International audience The Atlantic Ocean overturning circulation is important to the climate system because it carries heat and carbon northward, and from the surface to the deep ocean. The high salinity of the subpolar North Atlantic is a prerequisite for overturning circulation, and strong freshening could herald a slowdown. We show that the eastern subpolar North Atlantic underwent extreme freshening during 2012 to 2016, with a magnitude never seen before in 120 years of measurements. The cause was unusual winter wind patterns driving major changes in ocean circulation, including slowing of the North Atlantic Current and diversion of Arctic freshwater from the western boundary into the eastern basins. We find that winddriven routing of Arctic-origin freshwater intimately links conditions on the North West Atlantic shelf and slope region with the eastern subpolar basins. This reveals the importance of atmospheric forcing of intra-basin circulation in determining the salinity of the subpolar North Atlantic. |
author2 |
National Oceanography Centre Southampton (NOC) University of Southampton Institute of Oceanography Hamburg University of Hamburg Marine Scotland Science (MSS) Department of Meteorology Stockholm (MISU) Stockholm University Bolin Centre for Climate Research Scottish Association for Marine Science (SAMS) Faroe Marine Research Institute Rosenstiel School of Marine and Atmospheric Science (RSMAS) University of Miami Coral Gables Collecte Localisation Satellites (CLS) Helmholtz Centre for Ocean Research Kiel (GEOMAR) Processus et interactions de fine échelle océanique (PROTEO) 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) Graduate School of Oceanography Narragansett University of Rhode Island (URI) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Marine and Freshwater Research Institute (MFRI) Bedford Institute of Oceanography European Project: 633211,H2020,H2020-BG-2014-2,AtlantOS(2015) |
format |
Article in Journal/Newspaper |
author |
Holliday, N. Penny Bersch, Manfred Berx, Barbara Chafik, Léon Cunningham, Stuart Florindo-López, Cristian Hátún, Hjálmar Johns, William Josey, Simon Larsen, Karin Margretha H. Mulet, Sandrine Oltmanns, Marilena Reverdin, Gilles Rossby, Tom Thierry, Virginie Valdimarsson, Hedinn Yashayaev, Igor |
author_facet |
Holliday, N. Penny Bersch, Manfred Berx, Barbara Chafik, Léon Cunningham, Stuart Florindo-López, Cristian Hátún, Hjálmar Johns, William Josey, Simon Larsen, Karin Margretha H. Mulet, Sandrine Oltmanns, Marilena Reverdin, Gilles Rossby, Tom Thierry, Virginie Valdimarsson, Hedinn Yashayaev, Igor |
author_sort |
Holliday, N. Penny |
title |
Ocean circulation causes the largest freshening event for 120 years in eastern subpolar North Atlantic |
title_short |
Ocean circulation causes the largest freshening event for 120 years in eastern subpolar North Atlantic |
title_full |
Ocean circulation causes the largest freshening event for 120 years in eastern subpolar North Atlantic |
title_fullStr |
Ocean circulation causes the largest freshening event for 120 years in eastern subpolar North Atlantic |
title_full_unstemmed |
Ocean circulation causes the largest freshening event for 120 years in eastern subpolar North Atlantic |
title_sort |
ocean circulation causes the largest freshening event for 120 years in eastern subpolar north atlantic |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03147373 https://hal.science/hal-03147373/document https://hal.science/hal-03147373/file/s41467-020-14474-y.pdf https://doi.org/10.1038/s41467-020-14474-y |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic north atlantic current North Atlantic North West Atlantic |
genre_facet |
Arctic north atlantic current North Atlantic North West Atlantic |
op_source |
ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-03147373 Nature Communications, 2020, 11 (1), pp.585. ⟨10.1038/s41467-020-14474-y⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-020-14474-y info:eu-repo/grantAgreement//633211/EU/Optimizing and Enhancing the Integrated Atlantic Ocean Observing System/AtlantOS hal-03147373 https://hal.science/hal-03147373 https://hal.science/hal-03147373/document https://hal.science/hal-03147373/file/s41467-020-14474-y.pdf doi:10.1038/s41467-020-14474-y WOS: 000563513300001 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41467-020-14474-y |
container_title |
Nature Communications |
container_volume |
11 |
container_issue |
1 |
_version_ |
1802640656620847104 |
spelling |
ftmuseumnhn:oai:HAL:hal-03147373v1 2024-06-23T07:49:56+00:00 Ocean circulation causes the largest freshening event for 120 years in eastern subpolar North Atlantic Holliday, N. Penny Bersch, Manfred Berx, Barbara Chafik, Léon Cunningham, Stuart Florindo-López, Cristian Hátún, Hjálmar Johns, William Josey, Simon Larsen, Karin Margretha H. Mulet, Sandrine Oltmanns, Marilena Reverdin, Gilles Rossby, Tom Thierry, Virginie Valdimarsson, Hedinn Yashayaev, Igor National Oceanography Centre Southampton (NOC) University of Southampton Institute of Oceanography Hamburg University of Hamburg Marine Scotland Science (MSS) Department of Meteorology Stockholm (MISU) Stockholm University Bolin Centre for Climate Research Scottish Association for Marine Science (SAMS) Faroe Marine Research Institute Rosenstiel School of Marine and Atmospheric Science (RSMAS) University of Miami Coral Gables Collecte Localisation Satellites (CLS) Helmholtz Centre for Ocean Research Kiel (GEOMAR) Processus et interactions de fine échelle océanique (PROTEO) 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) Graduate School of Oceanography Narragansett University of Rhode Island (URI) Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) Marine and Freshwater Research Institute (MFRI) Bedford Institute of Oceanography European Project: 633211,H2020,H2020-BG-2014-2,AtlantOS(2015) 2020-12 https://hal.science/hal-03147373 https://hal.science/hal-03147373/document https://hal.science/hal-03147373/file/s41467-020-14474-y.pdf https://doi.org/10.1038/s41467-020-14474-y en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-020-14474-y info:eu-repo/grantAgreement//633211/EU/Optimizing and Enhancing the Integrated Atlantic Ocean Observing System/AtlantOS hal-03147373 https://hal.science/hal-03147373 https://hal.science/hal-03147373/document https://hal.science/hal-03147373/file/s41467-020-14474-y.pdf doi:10.1038/s41467-020-14474-y WOS: 000563513300001 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-03147373 Nature Communications, 2020, 11 (1), pp.585. ⟨10.1038/s41467-020-14474-y⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2020 ftmuseumnhn https://doi.org/10.1038/s41467-020-14474-y 2024-06-03T23:52:52Z International audience The Atlantic Ocean overturning circulation is important to the climate system because it carries heat and carbon northward, and from the surface to the deep ocean. The high salinity of the subpolar North Atlantic is a prerequisite for overturning circulation, and strong freshening could herald a slowdown. We show that the eastern subpolar North Atlantic underwent extreme freshening during 2012 to 2016, with a magnitude never seen before in 120 years of measurements. The cause was unusual winter wind patterns driving major changes in ocean circulation, including slowing of the North Atlantic Current and diversion of Arctic freshwater from the western boundary into the eastern basins. We find that winddriven routing of Arctic-origin freshwater intimately links conditions on the North West Atlantic shelf and slope region with the eastern subpolar basins. This reveals the importance of atmospheric forcing of intra-basin circulation in determining the salinity of the subpolar North Atlantic. Article in Journal/Newspaper Arctic north atlantic current North Atlantic North West Atlantic Muséum National d'Histoire Naturelle (MNHM): HAL Arctic Nature Communications 11 1 |