Gulf stream variability in five oceanic general circulation models.
Five non-eddy-resolving oceanic general circulation models driven by atmospheric fluxes derived from the NCEP reanalysis are used to investigate the link between the Gulf Stream (GS) variability, the atmospheric circulation, and the Atlantic meridional overturning circulation (AMOC). Despite the lim...
Published in: | Journal of Physical Oceanography |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2006
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Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-00138640 https://hal.archives-ouvertes.fr/hal-00138640/document https://hal.archives-ouvertes.fr/hal-00138640/file/%255B15200485%2520-%2520Journal%2520of%2520Physical%2520Oceanography%255D%2520Gulf%2520Stream%2520Variability%2520in%2520Five%2520Oceanic%2520General%2520Circulation%2520Models.pdf https://doi.org/10.1175/JPO2963.1 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Ocean models General circulation models Atlantic Ocean Currents Ocean circulation [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
Ocean models General circulation models Atlantic Ocean Currents Ocean circulation [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] De Coëtlogon, Gaëlle Frankignoul, Claude Bentsen, Mats Delon, Claire Haak, Helmuth Masina, Simona Pardaens, Anne Gulf stream variability in five oceanic general circulation models. |
topic_facet |
Ocean models General circulation models Atlantic Ocean Currents Ocean circulation [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
Five non-eddy-resolving oceanic general circulation models driven by atmospheric fluxes derived from the NCEP reanalysis are used to investigate the link between the Gulf Stream (GS) variability, the atmospheric circulation, and the Atlantic meridional overturning circulation (AMOC). Despite the limited model resolution, the temperature at the 200-m depth along the mean GS axis behaves similarly in most models to that observed, and it is also well correlated with the North Atlantic Oscillation (NAO), indicating that a northward (southward) GS shift lags a positive (negative) NAO phase by 0–2 yr. The northward shift is accompanied by an increase in the GS transport, and conversely the southward shift with a decrease in the GS transport. Two dominant time scales appear in the response of the GS transport to the NAO forcing: a fast time scale (less than 1 month) for the barotropic component, and a slower one (about 2 yr) for the baroclinic component. In addition, the two components are weakly coupled. The GS response seems broadly consistent with a linear adjustment to the changes in the wind stress curl, and evidence for baroclinic Rossby wave propagation is found in the southern part of the subtropical gyre. However, the GS shifts are also affected by basin-scale changes in the oceanic conditions, and they are well correlated in most models with the changes in the AMOC. A larger AMOC is found when the GS is stronger and displaced northward, and a higher correlation is found when the observed changes of the GS position are used in the comparison. The relation between the GS and the AMOC could be explained by the inherent coupling between the thermohaline and the wind-driven circulation, or by the NAO variability driving them on similar time scales in the models. |
author2 |
Centre d'étude des environnements terrestre et planétaires (CETP) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'océanographie dynamique et de climatologie (LODYC) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Recherche pour le Développement (IRD) Nansen Environmental and Remote Sensing Center Bergen (NERSC) Laboratoire d'aérologie (LAERO) Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées Max Planck Institute for Meteorology (MPI-M) Max-Planck-Gesellschaft Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania (INGV) Istituto Nazionale di Geofisica e Vulcanologia Hadley Centre for Climate Prediction and Research United Kingdom Met Office Exeter |
format |
Article in Journal/Newspaper |
author |
De Coëtlogon, Gaëlle Frankignoul, Claude Bentsen, Mats Delon, Claire Haak, Helmuth Masina, Simona Pardaens, Anne |
author_facet |
De Coëtlogon, Gaëlle Frankignoul, Claude Bentsen, Mats Delon, Claire Haak, Helmuth Masina, Simona Pardaens, Anne |
author_sort |
De Coëtlogon, Gaëlle |
title |
Gulf stream variability in five oceanic general circulation models. |
title_short |
Gulf stream variability in five oceanic general circulation models. |
title_full |
Gulf stream variability in five oceanic general circulation models. |
title_fullStr |
Gulf stream variability in five oceanic general circulation models. |
title_full_unstemmed |
Gulf stream variability in five oceanic general circulation models. |
title_sort |
gulf stream variability in five oceanic general circulation models. |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.archives-ouvertes.fr/hal-00138640 https://hal.archives-ouvertes.fr/hal-00138640/document https://hal.archives-ouvertes.fr/hal-00138640/file/%255B15200485%2520-%2520Journal%2520of%2520Physical%2520Oceanography%255D%2520Gulf%2520Stream%2520Variability%2520in%2520Five%2520Oceanic%2520General%2520Circulation%2520Models.pdf https://doi.org/10.1175/JPO2963.1 |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Curl |
geographic_facet |
Curl |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 0022-3670 EISSN: 1520-0485 Journal of Physical Oceanography https://hal.archives-ouvertes.fr/hal-00138640 Journal of Physical Oceanography, American Meteorological Society, 2006, 36, pp.2119-2135. ⟨10.1175/JPO2963.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1175/JPO2963.1 hal-00138640 https://hal.archives-ouvertes.fr/hal-00138640 https://hal.archives-ouvertes.fr/hal-00138640/document https://hal.archives-ouvertes.fr/hal-00138640/file/%255B15200485%2520-%2520Journal%2520of%2520Physical%2520Oceanography%255D%2520Gulf%2520Stream%2520Variability%2520in%2520Five%2520Oceanic%2520General%2520Circulation%2520Models.pdf doi:10.1175/JPO2963.1 WOS: 000242618500009 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/JPO2963.1 |
container_title |
Journal of Physical Oceanography |
container_volume |
36 |
container_issue |
11 |
container_start_page |
2119 |
op_container_end_page |
2135 |
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1766135415944773632 |
spelling |
ftccsdartic:oai:HAL:hal-00138640v1 2023-05-15T17:36:04+02:00 Gulf stream variability in five oceanic general circulation models. De Coëtlogon, Gaëlle Frankignoul, Claude Bentsen, Mats Delon, Claire Haak, Helmuth Masina, Simona Pardaens, Anne Centre d'étude des environnements terrestre et planétaires (CETP) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'océanographie dynamique et de climatologie (LODYC) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Recherche pour le Développement (IRD) Nansen Environmental and Remote Sensing Center Bergen (NERSC) Laboratoire d'aérologie (LAERO) Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP) Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales Toulouse (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées Max Planck Institute for Meteorology (MPI-M) Max-Planck-Gesellschaft Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania (INGV) Istituto Nazionale di Geofisica e Vulcanologia Hadley Centre for Climate Prediction and Research United Kingdom Met Office Exeter 2006 https://hal.archives-ouvertes.fr/hal-00138640 https://hal.archives-ouvertes.fr/hal-00138640/document https://hal.archives-ouvertes.fr/hal-00138640/file/%255B15200485%2520-%2520Journal%2520of%2520Physical%2520Oceanography%255D%2520Gulf%2520Stream%2520Variability%2520in%2520Five%2520Oceanic%2520General%2520Circulation%2520Models.pdf https://doi.org/10.1175/JPO2963.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/JPO2963.1 hal-00138640 https://hal.archives-ouvertes.fr/hal-00138640 https://hal.archives-ouvertes.fr/hal-00138640/document https://hal.archives-ouvertes.fr/hal-00138640/file/%255B15200485%2520-%2520Journal%2520of%2520Physical%2520Oceanography%255D%2520Gulf%2520Stream%2520Variability%2520in%2520Five%2520Oceanic%2520General%2520Circulation%2520Models.pdf doi:10.1175/JPO2963.1 WOS: 000242618500009 info:eu-repo/semantics/OpenAccess ISSN: 0022-3670 EISSN: 1520-0485 Journal of Physical Oceanography https://hal.archives-ouvertes.fr/hal-00138640 Journal of Physical Oceanography, American Meteorological Society, 2006, 36, pp.2119-2135. ⟨10.1175/JPO2963.1⟩ Ocean models General circulation models Atlantic Ocean Currents Ocean circulation [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2006 ftccsdartic https://doi.org/10.1175/JPO2963.1 2021-12-12T00:59:40Z Five non-eddy-resolving oceanic general circulation models driven by atmospheric fluxes derived from the NCEP reanalysis are used to investigate the link between the Gulf Stream (GS) variability, the atmospheric circulation, and the Atlantic meridional overturning circulation (AMOC). Despite the limited model resolution, the temperature at the 200-m depth along the mean GS axis behaves similarly in most models to that observed, and it is also well correlated with the North Atlantic Oscillation (NAO), indicating that a northward (southward) GS shift lags a positive (negative) NAO phase by 0–2 yr. The northward shift is accompanied by an increase in the GS transport, and conversely the southward shift with a decrease in the GS transport. Two dominant time scales appear in the response of the GS transport to the NAO forcing: a fast time scale (less than 1 month) for the barotropic component, and a slower one (about 2 yr) for the baroclinic component. In addition, the two components are weakly coupled. The GS response seems broadly consistent with a linear adjustment to the changes in the wind stress curl, and evidence for baroclinic Rossby wave propagation is found in the southern part of the subtropical gyre. However, the GS shifts are also affected by basin-scale changes in the oceanic conditions, and they are well correlated in most models with the changes in the AMOC. A larger AMOC is found when the GS is stronger and displaced northward, and a higher correlation is found when the observed changes of the GS position are used in the comparison. The relation between the GS and the AMOC could be explained by the inherent coupling between the thermohaline and the wind-driven circulation, or by the NAO variability driving them on similar time scales in the models. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Journal of Physical Oceanography 36 11 2119 2135 |