DOI: 10.1175/JCLI-D-11-00085.1
Scopus记录号: 2-s2.0-84859323540
论文题名: Arctic/Atlantic exchanges via the subpolar gyre
作者: Langehaug H.R. ; Medhaug I. ; Eldevik T. ; Otterå O.H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2012
卷: 25, 期: 7 起始页码: 2421
结束页码: 2439
语种: 英语
Scopus关键词: Atmospheric variability
; Bergen climate model
; Decadal variability
; Labrador sea waters
; Nordic seas
; North Atlantic
; North Atlantic Currents
; North Atlantic oscillations
; Pre-industrial
; Standard deviation
; Subpolar gyres
; Climate control
; Climatology
; Mathematical models
; Atmospheric pressure
; air-sea interaction
; Antarctic Oscillation
; Arctic Oscillation
; climate modeling
; decadal variation
; gyre
; North Atlantic Oscillation
; Atlantic Ocean
; Labrador Sea
英文摘要: In the present study the decadal variability in the strength and shape of the subpolar gyre (SPG) in a 600-yr preindustrial simulation using the Bergen Climate Model is investigated. The atmospheric influence on the SPG strength is reflected in the variability of Labrador Sea Water (LSW), which is largely controlled by the North Atlantic Oscillation, the first mode of the North Atlantic atmospheric variability. A combination of the amount of LSW, the overflows from the Nordic seas, and the second mode of atmospheric variability, the East Atlantic Pattern, explains 44% of the modeled decadal variability in the SPG strength. A prior increase in these components leads to an intensified SPG in the western subpolar region. Typically, an increase of one standard deviation (std dev) of the total overflow (1 std dev = 0.2 Sv; 1 Sv ≡ 10 6 m 3 s -1) corresponds to an intensification of about one-half std dev of the SPG strength (1 std dev52 Sv).Asimilar response is found for an increase of one std dev in the amount of LSW, and simultaneously the strength of the North Atlantic Current increases by one-half std dev (1 std dev = 0.9 Sv). © 2012 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52476
Appears in Collections: 气候变化事实与影响
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作者单位: Nansen Environmental and Remote Sensing Center, Bjerknes Centre for Climate Research, Bergen, Norway; Geophysical Institute, University of Bergen, Bjerknes Centre for Climate Research, Bergen, Norway; Uni Bjerknes Centre, Bjerknes Centre for Climate Research, Bergen, Norway
Recommended Citation:
Langehaug H.R.,Medhaug I.,Eldevik T.,et al. Arctic/Atlantic exchanges via the subpolar gyre[J]. Journal of Climate,2012-01-01,25(7)