DOI: 10.1175/JCLI-D-12-00063.1
Scopus记录号: 2-s2.0-84874889586
论文题名: The atmospheric response to three decades of observed arctic sea ice loss
作者: Screen J.A. ; Simmonds I. ; Deser C. ; Tomas R.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 4 起始页码: 1230
结束页码: 1248
语种: 英语
Scopus关键词: Atmospheric circulation
; Atmospheric general circulation models
; Atmospheric response
; Atmospheric variability
; Intrinsic variabilities
; North Atlantic oscillations
; Stratospheric ozone
; Surface temperatures
; Atmospheric pressure
; Atmospheric temperature
; Climatology
; Energy transfer
; Ozone layer
; Sea ice
; atmospheric circulation
; atmospheric forcing
; atmospheric general circulation model
; concentration (composition)
; North Atlantic Oscillation
; ozone
; sea ice
; sea surface temperature
; stratosphere
; temperature inversion
; troposphere
英文摘要: Arctic sea ice is declining at an increasing rate with potentially important repercussions. To understand better the atmospheric changes that may have occurred in response to Arctic sea ice loss, this study presents results from atmospheric general circulation model (AGCM) experiments in which the only time-varying forcings prescribed were observed variations in Arctic sea ice and accompanying changes in Arctic sea surface temperatures from 1979 to 2009. Two independent AGCMs are utilized in order to assess the robustness of the response across different models. The results suggest that the atmospheric impacts of Arctic sea ice loss have been manifested most strongly within themaritime and coastalArctic and in the lowermost atmosphere. Sea ice loss has driven increased energy transfer fromthe ocean to the atmosphere, enhancedwarming andmoistening of the lower troposphere, decreased the strength of the surface temperature inversion, and increased lowertropospheric thickness; all of these changes are most pronounced in autumn and early winter (September-December). The early winter (November-December) atmospheric circulation response resembles the negative phase of the North Atlantic Oscillation (NAO); however, the NAO-type response is quite weak and is often masked by intrinsic (unforced) atmospheric variability. Some evidence of a late winter (March-April) polar stratospheric cooling response to sea ice loss is also found, which may have important implications for polar stratospheric ozone concentrations. The attribution and quantification of other aspects of the possible atmospheric response are hindered by model sensitivities and large intrinsic variability. The potential remote responses to Arctic sea ice change are currently hard to confirm and remain uncertain. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52018
Appears in Collections: 气候变化事实与影响
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作者单位: School of Earth Sciences, University of Melbourne, Melbourne, VIC, Australia; National Center for Atmospheric Research, Boulder, CO, United States
Recommended Citation:
Screen J.A.,Simmonds I.,Deser C.,et al. The atmospheric response to three decades of observed arctic sea ice loss[J]. Journal of Climate,2013-01-01,26(4)