DOI: 10.1175/JCLI-D-17-0666.1
Scopus记录号: 2-s2.0-85050224580
论文题名: Contrasting the Antarctic and Arctic atmospheric responses to projected sea ice loss in the late twenty-first century
作者: England M. ; Polvani L. ; Sun L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 16 起始页码: 6353
结束页码: 6370
语种: 英语
英文关键词: Antarctica
; Arctic
; Atmosphere
; Atmospheric circulation
; Climate models
; Ensembles
Scopus关键词: Earth atmosphere
; Fighter aircraft
; Greenhouse gases
; Ozone layer
; Sea ice
; Troposphere
; Antarctica
; Arctic
; Atmospheric circulation
; Atmospheric response
; Coupled climate model
; Ensembles
; Sea ice concentration
; Surface temperatures
; Climate models
; atmospheric circulation
; atmospheric modeling
; climate modeling
; ensemble forecasting
; precipitation (climatology)
; sea ice
; surface temperature
; twenty first century
; Antarctica
; Arctic
英文摘要: Models project that Antarctic sea ice area will decline considerably by the end of this century, but the consequences remain largely unexplored. Here, the atmospheric response to future sea ice loss in the Antarctic is investigated, and contrasted to the Arctic case, using the Community Earth Systems Model (CESM) Whole Atmosphere Coupled Climate Model (WACCM). Time-slice model runs with historic sea ice concentrations are compared to runs with future concentrations, from the late twenty-first century, in each hemisphere separately. As for the Arctic, results indicate that Antarctic sea ice loss will act to shift the tropospheric jet equatorward, an internal negative feedback to the poleward shift associated with increased greenhouse gases. Also, the tropospheric response to Antarctic sea ice loss is found to be somewhat weaker, more vertically confined, and less seasonally varying than in the case of Arctic sea ice loss. The stratospheric response to Antarctic sea ice loss is relatively weak compared to the Arctic case, although it is here demonstrated that the latter is still small relative to internal variability. In contrast to the Arctic case, the response of the ozone layer is found to be positive (up to 5 Dobson units): interestingly, it is present in all seasons except austral spring. Finally, while the response of surface temperature and precipitation is limited to the southern high latitudes, it is nonetheless unable to impact the interior of the Antarctic continent, suggesting a minor role of sea ice loss on recent Antarctic temperature trends. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111444
Appears in Collections: 气候减缓与适应
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作者单位: Applied Physics and Applied Mathematics Department, Columbia University, New York, NY, United States; Department of Earth and Environmental Science, Lamont-Doherty Earth Observatory, Columbia University, New York, NY, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; NOAA/Earth System Research Laboratory, Boulder, CO, United States
Recommended Citation:
England M.,Polvani L.,Sun L.. Contrasting the Antarctic and Arctic atmospheric responses to projected sea ice loss in the late twenty-first century[J]. Journal of Climate,2018-01-01,31(16)