Mechanisms of decadal arctic climate variability in the community climate system model, version 2 (CCSM2)
Several mechanisms have been proposed to explain natural climate variability in the Arctic. These include processes related to the influence of the North Atlantic Oscillation/Arctic Oscillation (NAO/AO), anticyclonic/cyclonic regimes, changes in the oceanic and atmospheric North Atlantic-Arctic exch...
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Online Access: | http://hdl.handle.net/2078.1/39063 https://doi.org/10.1175/JCLI3476.1 |
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:39063 2024-05-12T07:58:04+00:00 Mechanisms of decadal arctic climate variability in the community climate system model, version 2 (CCSM2) Goosse, Hugues Holland, MM UCL UCL - SST/ELI/ELIC - Earth & Climate 2005 http://hdl.handle.net/2078.1/39063 https://doi.org/10.1175/JCLI3476.1 eng eng Amer Meteorological Soc boreal:39063 http://hdl.handle.net/2078.1/39063 doi:10.1175/JCLI3476.1 urn:ISSN:0894-8755 urn:EISSN:1520-0442 Journal of Climate, Vol. 18, no. 17, p. 3552-3570 (2005) info:eu-repo/semantics/article 2005 ftunistlouisbrus https://doi.org/10.1175/JCLI3476.1 2024-04-18T18:15:11Z Several mechanisms have been proposed to explain natural climate variability in the Arctic. These include processes related to the influence of the North Atlantic Oscillation/Arctic Oscillation (NAO/AO), anticyclonic/cyclonic regimes, changes in the oceanic and atmospheric North Atlantic-Arctic exchange, and changes in the Atlantic meridional overturning circulation. After a brief critical review, the influence and interrelation of the above processes in a long climate integration of the Community Climate System Model, version 2 (CCSM2) are examined. The analysis is based on the time series of surface air temperature integrated northward of 70 degrees N, which serves as a useful proxy for general Arctic climate conditions. This gives a large-scale view of the evolution of Arctic climate. It is found that changes in oceanic exchange and heat transport in the Barents Sea dominate in forcing the Arctic surface air temperature variability in CCSM2. Changes in atmospheric circulation are consistent with a wind forcing of this variability, while changes in the deep overturning circulation in the Atlantic are more weakly related in CCSM2. Over some time periods, the NAO/AO is significantly related to these changes in Arctic climate conditions. However, this is not robust over longer time scales. Article in Journal/Newspaper Arctic Atlantic Arctic Atlantic-Arctic Barents Sea North Atlantic North Atlantic oscillation DIAL@USL-B (Université Saint-Louis, Bruxelles) Arctic Barents Sea Journal of Climate 18 17 3552 3570 |
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Open Polar |
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DIAL@USL-B (Université Saint-Louis, Bruxelles) |
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ftunistlouisbrus |
language |
English |
description |
Several mechanisms have been proposed to explain natural climate variability in the Arctic. These include processes related to the influence of the North Atlantic Oscillation/Arctic Oscillation (NAO/AO), anticyclonic/cyclonic regimes, changes in the oceanic and atmospheric North Atlantic-Arctic exchange, and changes in the Atlantic meridional overturning circulation. After a brief critical review, the influence and interrelation of the above processes in a long climate integration of the Community Climate System Model, version 2 (CCSM2) are examined. The analysis is based on the time series of surface air temperature integrated northward of 70 degrees N, which serves as a useful proxy for general Arctic climate conditions. This gives a large-scale view of the evolution of Arctic climate. It is found that changes in oceanic exchange and heat transport in the Barents Sea dominate in forcing the Arctic surface air temperature variability in CCSM2. Changes in atmospheric circulation are consistent with a wind forcing of this variability, while changes in the deep overturning circulation in the Atlantic are more weakly related in CCSM2. Over some time periods, the NAO/AO is significantly related to these changes in Arctic climate conditions. However, this is not robust over longer time scales. |
author2 |
UCL UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Goosse, Hugues Holland, MM |
spellingShingle |
Goosse, Hugues Holland, MM Mechanisms of decadal arctic climate variability in the community climate system model, version 2 (CCSM2) |
author_facet |
Goosse, Hugues Holland, MM |
author_sort |
Goosse, Hugues |
title |
Mechanisms of decadal arctic climate variability in the community climate system model, version 2 (CCSM2) |
title_short |
Mechanisms of decadal arctic climate variability in the community climate system model, version 2 (CCSM2) |
title_full |
Mechanisms of decadal arctic climate variability in the community climate system model, version 2 (CCSM2) |
title_fullStr |
Mechanisms of decadal arctic climate variability in the community climate system model, version 2 (CCSM2) |
title_full_unstemmed |
Mechanisms of decadal arctic climate variability in the community climate system model, version 2 (CCSM2) |
title_sort |
mechanisms of decadal arctic climate variability in the community climate system model, version 2 (ccsm2) |
publisher |
Amer Meteorological Soc |
publishDate |
2005 |
url |
http://hdl.handle.net/2078.1/39063 https://doi.org/10.1175/JCLI3476.1 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Atlantic Arctic Atlantic-Arctic Barents Sea North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic Barents Sea North Atlantic North Atlantic oscillation |
op_source |
Journal of Climate, Vol. 18, no. 17, p. 3552-3570 (2005) |
op_relation |
boreal:39063 http://hdl.handle.net/2078.1/39063 doi:10.1175/JCLI3476.1 urn:ISSN:0894-8755 urn:EISSN:1520-0442 |
op_doi |
https://doi.org/10.1175/JCLI3476.1 |
container_title |
Journal of Climate |
container_volume |
18 |
container_issue |
17 |
container_start_page |
3552 |
op_container_end_page |
3570 |
_version_ |
1798838409466216448 |