Multidecadal mobility of the North Atlantic Oscillation
Author Posting. © American Meteorological Society, 2013. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 26 (2013): 2453–2466, doi:10.1175/JCLI-D-12-00023.1. The North At...
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ftwhoas:oai:darchive.mblwhoilibrary.org:1912/5945 2023-05-15T16:18:08+02:00 Multidecadal mobility of the North Atlantic Oscillation Moore, G. W. K. Renfrew, Ian A. Pickart, Robert S. 2013-04-15 application/pdf https://hdl.handle.net/1912/5945 en_US eng American Meteorological Society https://doi.org/10.1175/JCLI-D-12-00023.1 Journal of Climate 26 (2013): 2453–2466 https://hdl.handle.net/1912/5945 doi:10.1175/JCLI-D-12-00023.1 Journal of Climate 26 (2013): 2453–2466 doi:10.1175/JCLI-D-12-00023.1 North Atlantic Ocean North Atlantic Oscillation Climate variability Climatology Empirical orthogonal functions Article 2013 ftwhoas https://doi.org/10.1175/JCLI-D-12-00023.1 2022-05-28T22:58:52Z Author Posting. © American Meteorological Society, 2013. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 26 (2013): 2453–2466, doi:10.1175/JCLI-D-12-00023.1. The North Atlantic Oscillation (NAO) is one of the most important modes of variability in the global climate system and is characterized by a meridional dipole in the sea level pressure field, with centers of action near Iceland and the Azores. It has a profound influence on the weather, climate, ecosystems, and economies of Europe, Greenland, eastern North America, and North Africa. It has been proposed that around 1980, there was an eastward secular shift in the NAO’s northern center of action that impacted sea ice export through Fram Strait. Independently, it has also been suggested that the location of its southern center of action is tied to the phase of the NAO. Both of these attributes of the NAO have been linked to anthropogenic climate change. Here the authors use both the one-point correlation map technique as well as empirical orthogonal function (EOF) analysis to show that the meridional dipole that is often seen in the sea level pressure field over the North Atlantic is not purely the result of the NAO (as traditionally defined) but rather arises through an interplay among the NAO and two other leading modes of variability in the North Atlantic region: the East Atlantic (EA) and the Scandinavian (SCA) patterns. This interplay has resulted in multidecadal mobility in the two centers of action of the meridional dipole since the late nineteenth century. In particular, an eastward movement of the dipole has occurred during the 1930s to 1950s as well as more recently. This mobility is not seen in the leading EOF of the sea level pressure field in the region. GWKM was supported by the Natural Sciences and Engineering Research Council of Canada. IAR was supported in part by NE/C003365/1. RSP was supported by Grant ... Article in Journal/Newspaper Fram Strait Greenland Iceland North Atlantic North Atlantic oscillation Sea ice Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Canada Greenland Journal of Climate 26 8 2453 2466 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
topic |
North Atlantic Ocean North Atlantic Oscillation Climate variability Climatology Empirical orthogonal functions |
spellingShingle |
North Atlantic Ocean North Atlantic Oscillation Climate variability Climatology Empirical orthogonal functions Moore, G. W. K. Renfrew, Ian A. Pickart, Robert S. Multidecadal mobility of the North Atlantic Oscillation |
topic_facet |
North Atlantic Ocean North Atlantic Oscillation Climate variability Climatology Empirical orthogonal functions |
description |
Author Posting. © American Meteorological Society, 2013. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 26 (2013): 2453–2466, doi:10.1175/JCLI-D-12-00023.1. The North Atlantic Oscillation (NAO) is one of the most important modes of variability in the global climate system and is characterized by a meridional dipole in the sea level pressure field, with centers of action near Iceland and the Azores. It has a profound influence on the weather, climate, ecosystems, and economies of Europe, Greenland, eastern North America, and North Africa. It has been proposed that around 1980, there was an eastward secular shift in the NAO’s northern center of action that impacted sea ice export through Fram Strait. Independently, it has also been suggested that the location of its southern center of action is tied to the phase of the NAO. Both of these attributes of the NAO have been linked to anthropogenic climate change. Here the authors use both the one-point correlation map technique as well as empirical orthogonal function (EOF) analysis to show that the meridional dipole that is often seen in the sea level pressure field over the North Atlantic is not purely the result of the NAO (as traditionally defined) but rather arises through an interplay among the NAO and two other leading modes of variability in the North Atlantic region: the East Atlantic (EA) and the Scandinavian (SCA) patterns. This interplay has resulted in multidecadal mobility in the two centers of action of the meridional dipole since the late nineteenth century. In particular, an eastward movement of the dipole has occurred during the 1930s to 1950s as well as more recently. This mobility is not seen in the leading EOF of the sea level pressure field in the region. GWKM was supported by the Natural Sciences and Engineering Research Council of Canada. IAR was supported in part by NE/C003365/1. RSP was supported by Grant ... |
format |
Article in Journal/Newspaper |
author |
Moore, G. W. K. Renfrew, Ian A. Pickart, Robert S. |
author_facet |
Moore, G. W. K. Renfrew, Ian A. Pickart, Robert S. |
author_sort |
Moore, G. W. K. |
title |
Multidecadal mobility of the North Atlantic Oscillation |
title_short |
Multidecadal mobility of the North Atlantic Oscillation |
title_full |
Multidecadal mobility of the North Atlantic Oscillation |
title_fullStr |
Multidecadal mobility of the North Atlantic Oscillation |
title_full_unstemmed |
Multidecadal mobility of the North Atlantic Oscillation |
title_sort |
multidecadal mobility of the north atlantic oscillation |
publisher |
American Meteorological Society |
publishDate |
2013 |
url |
https://hdl.handle.net/1912/5945 |
geographic |
Canada Greenland |
geographic_facet |
Canada Greenland |
genre |
Fram Strait Greenland Iceland North Atlantic North Atlantic oscillation Sea ice |
genre_facet |
Fram Strait Greenland Iceland North Atlantic North Atlantic oscillation Sea ice |
op_source |
Journal of Climate 26 (2013): 2453–2466 doi:10.1175/JCLI-D-12-00023.1 |
op_relation |
https://doi.org/10.1175/JCLI-D-12-00023.1 Journal of Climate 26 (2013): 2453–2466 https://hdl.handle.net/1912/5945 doi:10.1175/JCLI-D-12-00023.1 |
op_doi |
https://doi.org/10.1175/JCLI-D-12-00023.1 |
container_title |
Journal of Climate |
container_volume |
26 |
container_issue |
8 |
container_start_page |
2453 |
op_container_end_page |
2466 |
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1766004271193522176 |