DOI: 10.1175/JCLI-D-15-0315.1
Scopus记录号: 2-s2.0-84957831236
论文题名: The impact of regional Arctic sea ice loss on atmospheric circulation and the NAO
作者: Pedersen R.A. ; Cvijanovic I. ; Langen P.L. ; Vinther B.M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 2 起始页码: 889
结束页码: 902
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric structure
; Atmospheric temperature
; Climatology
; Location
; Meteorology
; Oceanography
; Sea ice
; Surface waters
; Arctic
; Atmospheric circulation
; General circulation model
; Geographic location
; North Atlantic oscillations
; Ice
; atmosphere-ice-ocean system
; atmospheric circulation
; atmospheric general circulation model
; ice cover
; North Atlantic Oscillation
; oceanic general circulation model
; sea ice
; sea surface temperature
; Arctic Ocean
英文摘要: Reduction of the Arctic sea ice cover can affect the atmospheric circulation and thus impact the climate beyond the Arctic. The atmospheric response may, however, vary with the geographical location of sea ice loss. The atmospheric sensitivity to the location of sea ice loss is studied using a general circulation model in a configuration that allows combination of a prescribed sea ice cover and an active mixed layer ocean. This hybrid setup makes it possible to simulate the isolated impact of sea ice loss and provides a more complete response compared to experiments with fixed sea surface temperatures. Three investigated sea ice scenarios with ice loss in different regions all exhibit substantial near-surface warming, which peaks over the area of ice loss. The maximum warming is found during winter, delayed compared to the maximum sea ice reduction. The wintertime response of the midlatitude atmospheric circulation shows a nonuniform sensitivity to the location of sea ice reduction. While all three scenarios exhibit decreased zonal winds related to high-latitude geopotential height increases, the magnitudes and locations of the anomalies vary between the simulations. Investigation of the North Atlantic Oscillation reveals a high sensitivity to the location of the ice loss. The northern center of action exhibits clear shifts in response to the different sea ice reductions. Sea ice loss in the Atlantic and Pacific sectors of the Arctic cause westward and eastward shifts, respectively. © 2016 American Meteorological Society. 资助项目: ERC, European Research Council
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50256
Appears in Collections: 气候变化事实与影响
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作者单位: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Climate and Arctic Research, Danish Meteorological Institute, Copenhagen, Denmark; Atmospheric, Earth and Energy Division, Lawrence Livermore National Laboratory, Livermore, CA, United States; Climate and Arctic Research, Danish Meteorological Institute, Copenhagen, Denmark; Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
Recommended Citation:
Pedersen R.A.,Cvijanovic I.,Langen P.L.,et al. The impact of regional Arctic sea ice loss on atmospheric circulation and the NAO[J]. Journal of Climate,2016-01-01,29(2)