Influence of the North Atlantic on simulated atmospheric variability
International audience An atmospheric general circulation model is used to investigate the influence of the North Atlantic Ocean on atmospheric variability. The study covers the period from 1950 to 1994. The observed sea surface temperature and sea ice extension are used to force the atmospheric mod...
Published in: | Annals of Geophysics |
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ftinsu:oai:HAL:insu-03448600v1 2024-02-11T10:06:02+01:00 Influence of the North Atlantic on simulated atmospheric variability Conil, Sébastien Li, Zhao, X Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) 2009-12-18 https://insu.hal.science/insu-03448600 https://insu.hal.science/insu-03448600/document https://insu.hal.science/insu-03448600/file/3389-Article%20Text-3495-1-10-20091218.pdf https://doi.org/10.4401/ag-3389 en eng HAL CCSD Istituto Nazionale di Geofisica e Vulcanologia (INGV) info:eu-repo/semantics/altIdentifier/doi/10.4401/ag-3389 insu-03448600 https://insu.hal.science/insu-03448600 https://insu.hal.science/insu-03448600/document https://insu.hal.science/insu-03448600/file/3389-Article%20Text-3495-1-10-20091218.pdf doi:10.4401/ag-3389 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1593-5213 Annals of Geophysics https://insu.hal.science/insu-03448600 Annals of Geophysics, 2009, 46 (1), ⟨10.4401/ag-3389⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2009 ftinsu https://doi.org/10.4401/ag-3389 2024-01-17T17:25:56Z International audience An atmospheric general circulation model is used to investigate the influence of the North Atlantic Ocean on atmospheric variability. The study covers the period from 1950 to 1994. The observed sea surface temperature and sea ice extension are used to force the atmospheric model. Several configurations of the oceanic boundary conditions were made to isolate the role of the North Atlantic and to study its non-linear interaction with forcings from other oceanic basins. The multi-realization character of the experiments distinguishes between the internal random part and the external forced part of the total variability. The potential predictability can thus be evaluated. The response of the atmosphere is also studied with a modal approach in terms of hemispheric teleconnection patterns. The North Atlantic Ocean has a direct influence on both the Northern Hemisphere annular mode and the Pacific-North-America pattern, leading to a weak predictability. However the direct response is largely modulated by forcings from other oceanic basins. The non-linearity of the system compensates the predictable component of the annular mode induced by the North Atlantic forcing. Furthermore it reduces the forced component of the Pacific-North-America pattern, increasing its chaoticity. Article in Journal/Newspaper North Atlantic Sea ice Institut national des sciences de l'Univers: HAL-INSU Pacific Annals of Geophysics 46 1 |
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Institut national des sciences de l'Univers: HAL-INSU |
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ftinsu |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Conil, Sébastien Li, Zhao, X Influence of the North Atlantic on simulated atmospheric variability |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience An atmospheric general circulation model is used to investigate the influence of the North Atlantic Ocean on atmospheric variability. The study covers the period from 1950 to 1994. The observed sea surface temperature and sea ice extension are used to force the atmospheric model. Several configurations of the oceanic boundary conditions were made to isolate the role of the North Atlantic and to study its non-linear interaction with forcings from other oceanic basins. The multi-realization character of the experiments distinguishes between the internal random part and the external forced part of the total variability. The potential predictability can thus be evaluated. The response of the atmosphere is also studied with a modal approach in terms of hemispheric teleconnection patterns. The North Atlantic Ocean has a direct influence on both the Northern Hemisphere annular mode and the Pacific-North-America pattern, leading to a weak predictability. However the direct response is largely modulated by forcings from other oceanic basins. The non-linearity of the system compensates the predictable component of the annular mode induced by the North Atlantic forcing. Furthermore it reduces the forced component of the Pacific-North-America pattern, increasing its chaoticity. |
author2 |
Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) |
format |
Article in Journal/Newspaper |
author |
Conil, Sébastien Li, Zhao, X |
author_facet |
Conil, Sébastien Li, Zhao, X |
author_sort |
Conil, Sébastien |
title |
Influence of the North Atlantic on simulated atmospheric variability |
title_short |
Influence of the North Atlantic on simulated atmospheric variability |
title_full |
Influence of the North Atlantic on simulated atmospheric variability |
title_fullStr |
Influence of the North Atlantic on simulated atmospheric variability |
title_full_unstemmed |
Influence of the North Atlantic on simulated atmospheric variability |
title_sort |
influence of the north atlantic on simulated atmospheric variability |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://insu.hal.science/insu-03448600 https://insu.hal.science/insu-03448600/document https://insu.hal.science/insu-03448600/file/3389-Article%20Text-3495-1-10-20091218.pdf https://doi.org/10.4401/ag-3389 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic Sea ice |
genre_facet |
North Atlantic Sea ice |
op_source |
ISSN: 1593-5213 Annals of Geophysics https://insu.hal.science/insu-03448600 Annals of Geophysics, 2009, 46 (1), ⟨10.4401/ag-3389⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.4401/ag-3389 insu-03448600 https://insu.hal.science/insu-03448600 https://insu.hal.science/insu-03448600/document https://insu.hal.science/insu-03448600/file/3389-Article%20Text-3495-1-10-20091218.pdf doi:10.4401/ag-3389 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.4401/ag-3389 |
container_title |
Annals of Geophysics |
container_volume |
46 |
container_issue |
1 |
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1790603436303056896 |