Low-frequency variations of the large-scale ocean circulation and heat transport in the North Atlantic from 1955–1998 in situ temperature and salinity data.
International audience Low-frequency variations of the large-scale ocean circulation in the Atlantic are reconstructed from NODC pentadal anomalies of temperature and salinity from 1955 to 1998 based on hydrographic data, in addition to atmospheric reanalysis surface forcing. Diagnostic ocean circul...
Published in: | Geophysical Research Letters |
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ftunivbrest:oai:HAL:hal-00405505v1 2023-12-17T10:46:38+01:00 Low-frequency variations of the large-scale ocean circulation and heat transport in the North Atlantic from 1955–1998 in situ temperature and salinity data. Huck, T. C. de Verdière, A. Estrade, P. Schopp, R. Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) 2008-12 https://hal.science/hal-00405505 https://doi.org/10.1029/2008GL035635 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL035635 hal-00405505 https://hal.science/hal-00405505 doi:10.1029/2008GL035635 ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00405505 Geophysical Research Letters, 2008, 35, pp.L23613. ⟨10.1029/2008GL035635⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2008 ftunivbrest https://doi.org/10.1029/2008GL035635 2023-11-21T23:38:19Z International audience Low-frequency variations of the large-scale ocean circulation in the Atlantic are reconstructed from NODC pentadal anomalies of temperature and salinity from 1955 to 1998 based on hydrographic data, in addition to atmospheric reanalysis surface forcing. Diagnostic ocean circulations are estimated from simple methods using dynamical model integrations: namely diagnostic, robust diagnostic, and short prognostic. Mean transports of heat and mass are sensitive to the method and model configuration, but their decadal variability is much more coherent and does not depend explicitly on the variations of the surface forcing, its influence being imprinted in the thermohaline structure. Multidecadal variations are of the order of 20%, with large transports in the subpolar gyre in the early 1960's and mid 1990's, and low values in the mid 1970's. By reducing the influence of subgrid-scale parameterizations and surface forcings, these methods offer alternatives to exhaustive GCM simulations. Article in Journal/Newspaper North Atlantic Université de Bretagne Occidentale: HAL Geophysical Research Letters 35 23 |
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Université de Bretagne Occidentale: HAL |
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ftunivbrest |
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English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
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[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Huck, T. C. de Verdière, A. Estrade, P. Schopp, R. Low-frequency variations of the large-scale ocean circulation and heat transport in the North Atlantic from 1955–1998 in situ temperature and salinity data. |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Low-frequency variations of the large-scale ocean circulation in the Atlantic are reconstructed from NODC pentadal anomalies of temperature and salinity from 1955 to 1998 based on hydrographic data, in addition to atmospheric reanalysis surface forcing. Diagnostic ocean circulations are estimated from simple methods using dynamical model integrations: namely diagnostic, robust diagnostic, and short prognostic. Mean transports of heat and mass are sensitive to the method and model configuration, but their decadal variability is much more coherent and does not depend explicitly on the variations of the surface forcing, its influence being imprinted in the thermohaline structure. Multidecadal variations are of the order of 20%, with large transports in the subpolar gyre in the early 1960's and mid 1990's, and low values in the mid 1970's. By reducing the influence of subgrid-scale parameterizations and surface forcings, these methods offer alternatives to exhaustive GCM simulations. |
author2 |
Laboratoire de physique des océans (LPO) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Huck, T. C. de Verdière, A. Estrade, P. Schopp, R. |
author_facet |
Huck, T. C. de Verdière, A. Estrade, P. Schopp, R. |
author_sort |
Huck, T. |
title |
Low-frequency variations of the large-scale ocean circulation and heat transport in the North Atlantic from 1955–1998 in situ temperature and salinity data. |
title_short |
Low-frequency variations of the large-scale ocean circulation and heat transport in the North Atlantic from 1955–1998 in situ temperature and salinity data. |
title_full |
Low-frequency variations of the large-scale ocean circulation and heat transport in the North Atlantic from 1955–1998 in situ temperature and salinity data. |
title_fullStr |
Low-frequency variations of the large-scale ocean circulation and heat transport in the North Atlantic from 1955–1998 in situ temperature and salinity data. |
title_full_unstemmed |
Low-frequency variations of the large-scale ocean circulation and heat transport in the North Atlantic from 1955–1998 in situ temperature and salinity data. |
title_sort |
low-frequency variations of the large-scale ocean circulation and heat transport in the north atlantic from 1955–1998 in situ temperature and salinity data. |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00405505 https://doi.org/10.1029/2008GL035635 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00405505 Geophysical Research Letters, 2008, 35, pp.L23613. ⟨10.1029/2008GL035635⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008GL035635 hal-00405505 https://hal.science/hal-00405505 doi:10.1029/2008GL035635 |
op_doi |
https://doi.org/10.1029/2008GL035635 |
container_title |
Geophysical Research Letters |
container_volume |
35 |
container_issue |
23 |
_version_ |
1785570186634461184 |