The North Atlantic Oscillation and greenhouse-gas forcing
The results of 12 coupled climate models participating in the Coupled Model Intercomparison Project (CMIP2) are compared together with observational data in order to investigate: 1) How the current generation of climate models reproduce the major features of the winter North Atlantic Oscillation (NA...
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American Geophysical Union
2005
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ftunivbergen:oai:bora.uib.no:1956/626 2023-05-15T15:03:22+02:00 The North Atlantic Oscillation and greenhouse-gas forcing Kuzmina, Svetlana I. Bengtsson, Lennart Johannessen, Ola M. Drange, Helge Bobylev, Leonid P. Miles, Martin W. 2005-02-17 490994 bytes application/pdf https://hdl.handle.net/1956/626 https://doi.org/10.1029/2004gl021064 eng eng American Geophysical Union urn:issn:0094-8276 https://hdl.handle.net/1956/626 https://doi.org/10.1029/2004gl021064 Climate dynamics Climatology Peer reviewed Journal article 2005 ftunivbergen https://doi.org/10.1029/2004gl021064 2023-03-14T17:41:25Z The results of 12 coupled climate models participating in the Coupled Model Intercomparison Project (CMIP2) are compared together with observational data in order to investigate: 1) How the current generation of climate models reproduce the major features of the winter North Atlantic Oscillation (NAO), and 2) How the NAO intensity and variability may change in response to increasing atmospheric CO2 concentration. Long-term changes in the intensity and spatial position of the NAO nodes (Icelandic Low and Azores High) are investigated, and different definitions of the NAO index and the Arctic Oscillation (AO) are considered. The observed temporal trend in the NAO in recent decades lies beyond the natural variability found in the model control runs. For the majority of the models, there is a significant increase in the NAO trend in the forced runs relative to the control runs, suggesting that the NAO may intensify with further increases in greenhouse-gas concentrations. Article in Journal/Newspaper Arctic North Atlantic North Atlantic oscillation University of Bergen: Bergen Open Research Archive (BORA-UiB) Arctic Geophysical Research Letters 32 4 n/a n/a |
institution |
Open Polar |
collection |
University of Bergen: Bergen Open Research Archive (BORA-UiB) |
op_collection_id |
ftunivbergen |
language |
English |
topic |
Climate dynamics Climatology |
spellingShingle |
Climate dynamics Climatology Kuzmina, Svetlana I. Bengtsson, Lennart Johannessen, Ola M. Drange, Helge Bobylev, Leonid P. Miles, Martin W. The North Atlantic Oscillation and greenhouse-gas forcing |
topic_facet |
Climate dynamics Climatology |
description |
The results of 12 coupled climate models participating in the Coupled Model Intercomparison Project (CMIP2) are compared together with observational data in order to investigate: 1) How the current generation of climate models reproduce the major features of the winter North Atlantic Oscillation (NAO), and 2) How the NAO intensity and variability may change in response to increasing atmospheric CO2 concentration. Long-term changes in the intensity and spatial position of the NAO nodes (Icelandic Low and Azores High) are investigated, and different definitions of the NAO index and the Arctic Oscillation (AO) are considered. The observed temporal trend in the NAO in recent decades lies beyond the natural variability found in the model control runs. For the majority of the models, there is a significant increase in the NAO trend in the forced runs relative to the control runs, suggesting that the NAO may intensify with further increases in greenhouse-gas concentrations. |
format |
Article in Journal/Newspaper |
author |
Kuzmina, Svetlana I. Bengtsson, Lennart Johannessen, Ola M. Drange, Helge Bobylev, Leonid P. Miles, Martin W. |
author_facet |
Kuzmina, Svetlana I. Bengtsson, Lennart Johannessen, Ola M. Drange, Helge Bobylev, Leonid P. Miles, Martin W. |
author_sort |
Kuzmina, Svetlana I. |
title |
The North Atlantic Oscillation and greenhouse-gas forcing |
title_short |
The North Atlantic Oscillation and greenhouse-gas forcing |
title_full |
The North Atlantic Oscillation and greenhouse-gas forcing |
title_fullStr |
The North Atlantic Oscillation and greenhouse-gas forcing |
title_full_unstemmed |
The North Atlantic Oscillation and greenhouse-gas forcing |
title_sort |
north atlantic oscillation and greenhouse-gas forcing |
publisher |
American Geophysical Union |
publishDate |
2005 |
url |
https://hdl.handle.net/1956/626 https://doi.org/10.1029/2004gl021064 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic North Atlantic oscillation |
genre_facet |
Arctic North Atlantic North Atlantic oscillation |
op_relation |
urn:issn:0094-8276 https://hdl.handle.net/1956/626 https://doi.org/10.1029/2004gl021064 |
op_doi |
https://doi.org/10.1029/2004gl021064 |
container_title |
Geophysical Research Letters |
container_volume |
32 |
container_issue |
4 |
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n/a |
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n/a |
_version_ |
1766335221896052736 |