Origin, formation and variability of the Subpolar Mode Water located over the Reykjanes Ridge
International audience The origin and formation of the Subpolar Mode Water (SPMW) located over the Reykjanes Ridge in the North-Atlantic Ocean and the variability of its properties over the period 1966-2004 are investigated through the use of a global eddy-permitting (1/4 ) ocean/sea-ice model and a...
Published in: | Journal of Geophysical Research: Oceans |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.archives-ouvertes.fr/hal-00783568 https://hal.archives-ouvertes.fr/hal-00783568/document https://hal.archives-ouvertes.fr/hal-00783568/file/2011JC007519.pdf https://doi.org/10.1029/2011JC007519 |
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ftccsdartic:oai:HAL:hal-00783568v1 2023-05-15T16:48:12+02:00 Origin, formation and variability of the Subpolar Mode Water located over the Reykjanes Ridge De Boisséson, E. Thierry, V. Mercier, H. Caniaux, G. Desbruyères, D. 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) Groupe d'étude de l'atmosphère météorologique (CNRM-GAME) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS) 2012 https://hal.archives-ouvertes.fr/hal-00783568 https://hal.archives-ouvertes.fr/hal-00783568/document https://hal.archives-ouvertes.fr/hal-00783568/file/2011JC007519.pdf https://doi.org/10.1029/2011JC007519 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2011JC007519 hal-00783568 https://hal.archives-ouvertes.fr/hal-00783568 https://hal.archives-ouvertes.fr/hal-00783568/document https://hal.archives-ouvertes.fr/hal-00783568/file/2011JC007519.pdf doi:10.1029/2011JC007519 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.archives-ouvertes.fr/hal-00783568 Journal of Geophysical Research, American Geophysical Union, 2012, 117, pp.C12005. ⟨10.1029/2011JC007519⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2012 ftccsdartic https://doi.org/10.1029/2011JC007519 2021-11-06T23:23:52Z International audience The origin and formation of the Subpolar Mode Water (SPMW) located over the Reykjanes Ridge in the North-Atlantic Ocean and the variability of its properties over the period 1966-2004 are investigated through the use of a global eddy-permitting (1/4 ) ocean/sea-ice model and a Lagrangian analysis tool. The SPMW is fed by subtropical and subpolar waters advected by the branches of the North-Atlantic Current. The SPMW acquires its properties when its source waters enter the winter mixed layer in the Iceland Basin. The SPMW temperature variability is mainly explained by variations of the relative contributions of the subtropical and subpolar water transports to the total transport. Compared to the 1966-2004 mean, lower (higher) subtropical water relative transport ontribution leads to colder (warmer) SPMW in the early 1990s (in the late 1960s and late 1990s). The intensity of the winter convection in the Iceland basin also influences the SPMW temperature through the amount of relatively cold intermediate waters of subtropical origin integrated in the SPMW layer. Strong convection partly explains the cold SPMW of the early 1990s. The large increase in the SPMW temperature in the late 1990s is due to both a decrease in the winter convection and an increase in the relative transport of the subtropical waters. Article in Journal/Newspaper Iceland north atlantic current North Atlantic Sea ice Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Journal of Geophysical Research: Oceans 117 C12 n/a n/a |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography De Boisséson, E. Thierry, V. Mercier, H. Caniaux, G. Desbruyères, D. Origin, formation and variability of the Subpolar Mode Water located over the Reykjanes Ridge |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The origin and formation of the Subpolar Mode Water (SPMW) located over the Reykjanes Ridge in the North-Atlantic Ocean and the variability of its properties over the period 1966-2004 are investigated through the use of a global eddy-permitting (1/4 ) ocean/sea-ice model and a Lagrangian analysis tool. The SPMW is fed by subtropical and subpolar waters advected by the branches of the North-Atlantic Current. The SPMW acquires its properties when its source waters enter the winter mixed layer in the Iceland Basin. The SPMW temperature variability is mainly explained by variations of the relative contributions of the subtropical and subpolar water transports to the total transport. Compared to the 1966-2004 mean, lower (higher) subtropical water relative transport ontribution leads to colder (warmer) SPMW in the early 1990s (in the late 1960s and late 1990s). The intensity of the winter convection in the Iceland basin also influences the SPMW temperature through the amount of relatively cold intermediate waters of subtropical origin integrated in the SPMW layer. Strong convection partly explains the cold SPMW of the early 1990s. The large increase in the SPMW temperature in the late 1990s is due to both a decrease in the winter convection and an increase in the relative transport of the subtropical waters. |
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) Groupe d'étude de l'atmosphère météorologique (CNRM-GAME) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
De Boisséson, E. Thierry, V. Mercier, H. Caniaux, G. Desbruyères, D. |
author_facet |
De Boisséson, E. Thierry, V. Mercier, H. Caniaux, G. Desbruyères, D. |
author_sort |
De Boisséson, E. |
title |
Origin, formation and variability of the Subpolar Mode Water located over the Reykjanes Ridge |
title_short |
Origin, formation and variability of the Subpolar Mode Water located over the Reykjanes Ridge |
title_full |
Origin, formation and variability of the Subpolar Mode Water located over the Reykjanes Ridge |
title_fullStr |
Origin, formation and variability of the Subpolar Mode Water located over the Reykjanes Ridge |
title_full_unstemmed |
Origin, formation and variability of the Subpolar Mode Water located over the Reykjanes Ridge |
title_sort |
origin, formation and variability of the subpolar mode water located over the reykjanes ridge |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.archives-ouvertes.fr/hal-00783568 https://hal.archives-ouvertes.fr/hal-00783568/document https://hal.archives-ouvertes.fr/hal-00783568/file/2011JC007519.pdf https://doi.org/10.1029/2011JC007519 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Reykjanes |
geographic_facet |
Reykjanes |
genre |
Iceland north atlantic current North Atlantic Sea ice |
genre_facet |
Iceland north atlantic current North Atlantic Sea ice |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.archives-ouvertes.fr/hal-00783568 Journal of Geophysical Research, American Geophysical Union, 2012, 117, pp.C12005. ⟨10.1029/2011JC007519⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2011JC007519 hal-00783568 https://hal.archives-ouvertes.fr/hal-00783568 https://hal.archives-ouvertes.fr/hal-00783568/document https://hal.archives-ouvertes.fr/hal-00783568/file/2011JC007519.pdf doi:10.1029/2011JC007519 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2011JC007519 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
117 |
container_issue |
C12 |
container_start_page |
n/a |
op_container_end_page |
n/a |
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1766038312770863104 |