Influence of the North Atlantic on simulated atmospheric variability
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 configurati...
Published in: | Annals of Geophysics |
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Istituto Nazionale di Geofisica e Vulcanologia, INGV
2003
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Online Access: | https://www.annalsofgeophysics.eu/index.php/annals/article/view/3389 https://doi.org/10.4401/ag-3389 |
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ftjaog:oai:ojs.annalsofgeophysics.eu:article/3389 2024-09-15T18:21:00+00:00 Influence of the North Atlantic on simulated atmospheric variability Conil, S. Li, Z. X. 2003-12-25 application/pdf https://www.annalsofgeophysics.eu/index.php/annals/article/view/3389 https://doi.org/10.4401/ag-3389 eng eng Istituto Nazionale di Geofisica e Vulcanologia, INGV https://www.annalsofgeophysics.eu/index.php/annals/article/view/3389/3435 https://www.annalsofgeophysics.eu/index.php/annals/article/view/3389 doi:10.4401/ag-3389 Annals of Geophysics; V. 46 N. 1 (2003) Annals of Geophysics; Vol. 46 No. 1 (2003) 2037-416X 1593-5213 atmospheric general circulation model internal/external variability climate predictability teleconnections 02.04.01. Atmosphere/sea ice/ocean interaction 03.01.01. Analytical and numerical modeling info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2003 ftjaog https://doi.org/10.4401/ag-3389 2024-07-12T03:03:34Z 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 Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia) Annals of Geophysics 46 1 |
institution |
Open Polar |
collection |
Annals of Geophysics (INGV, Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftjaog |
language |
English |
topic |
atmospheric general circulation model internal/external variability climate predictability teleconnections 02.04.01. Atmosphere/sea ice/ocean interaction 03.01.01. Analytical and numerical modeling |
spellingShingle |
atmospheric general circulation model internal/external variability climate predictability teleconnections 02.04.01. Atmosphere/sea ice/ocean interaction 03.01.01. Analytical and numerical modeling Conil, S. Li, Z. X. Influence of the North Atlantic on simulated atmospheric variability |
topic_facet |
atmospheric general circulation model internal/external variability climate predictability teleconnections 02.04.01. Atmosphere/sea ice/ocean interaction 03.01.01. Analytical and numerical modeling |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Conil, S. Li, Z. X. |
author_facet |
Conil, S. Li, Z. X. |
author_sort |
Conil, S. |
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 |
Istituto Nazionale di Geofisica e Vulcanologia, INGV |
publishDate |
2003 |
url |
https://www.annalsofgeophysics.eu/index.php/annals/article/view/3389 https://doi.org/10.4401/ag-3389 |
genre |
North Atlantic Sea ice |
genre_facet |
North Atlantic Sea ice |
op_source |
Annals of Geophysics; V. 46 N. 1 (2003) Annals of Geophysics; Vol. 46 No. 1 (2003) 2037-416X 1593-5213 |
op_relation |
https://www.annalsofgeophysics.eu/index.php/annals/article/view/3389/3435 https://www.annalsofgeophysics.eu/index.php/annals/article/view/3389 doi:10.4401/ag-3389 |
op_doi |
https://doi.org/10.4401/ag-3389 |
container_title |
Annals of Geophysics |
container_volume |
46 |
container_issue |
1 |
_version_ |
1810459391006081024 |