DOI: 10.1175/JCLI-D-12-00023.1
Scopus记录号: 2-s2.0-84877818403
论文题名: Multidecadal mobility of the north atlantic oscillation
作者: Moore G.W.K. ; Renfrew I.A. ; Pickart R.S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 8 起始页码: 2453
结束页码: 2466
语种: 英语
Scopus关键词: Anthropogenic climate changes
; Eastern north america
; Empirical orthogonal function analysis
; Global climate system
; Meridional dipole
; North Atlantic oscillations
; One-point correlation
; Sea-level pressure fields
; Atmospheric pressure
; Climate change
; Sea ice
; Sea level
; air-sea interaction
; climate change
; decadal variation
; global climate
; meridional circulation
; mobility
; North Atlantic Oscillation
; sea level pressure
; Arctic
; Azores
; Fram Strait
; Greenland
; Iceland
; North Africa
; North America
; Portugal
英文摘要: The North Atlantic Oscillation (NAO) is one of the most importantmodes 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 theNAOand two other leading modes of variability in the North Atlantic region: theEastAtlantic (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. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51890
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Physics, University of Toronto, Toronto, Ontario, Canada; School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom; Department of Physical Oceanography, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, United States
Recommended Citation:
Moore G.W.K.,Renfrew I.A.,Pickart R.S.. Multidecadal mobility of the north atlantic oscillation[J]. Journal of Climate,2013-01-01,26(8)