DOI: 10.1175/JCLI-D-14-00325.1
Scopus记录号: 2-s2.0-84961289258
论文题名: The role of ocean-atmosphere coupling in the zonal-mean atmospheric response to Arctic sea ice loss
作者: Deser C. ; Tomas R.A. ; Sun L.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期: 6 起始页码: 2168
结束页码: 2186
语种: 英语
Scopus关键词: Atmospheric radiation
; Atmospheric thermodynamics
; Climate models
; Greenhouse gases
; Oceanography
; Sea ice
; Troposphere
; Arctic Oscillation
; Atmosphere-ocean interactions
; Atmospheric circulation
; Community climate system model
; Equatorial symmetries
; Intertropical convergence zone
; Meridional temperature gradient
; Trends
; Ice
; air-sea interaction
; Arctic Oscillation
; atmosphere-ocean coupling
; atmospheric circulation
; climate modeling
; sea ice
; temperature gradient
; trend analysis
; troposphere
; Arctic Ocean
英文摘要: The role of ocean-atmosphere coupling in the zonal-mean climate response to projected late twenty-firstcentury Arctic sea ice loss is investigated using Community Climate System Model version 4 (CCSM4) at 1° spatial resolution. Parallel experiments with different ocean model configurations (full-depth, slab, and no interactive ocean) allow the roles of dynamical and thermodynamic ocean feedbacks to be isolated. In the absence of ocean coupling, the atmospheric response to Arctic sea ice loss is confined to north of 30°N, consisting of a weakening and equatorward shift of the westerlies accompanied by lower tropospheric warming and enhanced precipitation at high latitudes. With ocean feedbacks, the response expands to cover the whole globe and exhibits a high degree of equatorial symmetry: the entire troposphere warms, the global hydrological cycle strengthens, and the intertropical convergence zones shift equatorward. Ocean dynamics are fundamental to producing this equatorially symmetric pattern of response to Arctic sea ice loss. Finally, the absence of a poleward shift of the wintertime Northern Hemisphere westerlies in CCSM4's response to greenhouse gas radiative forcing is shown to result from the competing effects of Arctic sea ice loss and greenhouse warming on the meridional temperature gradient in middle latitudes. © 2015 American Meteorological Society. 资助项目: NSF, National Science Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50619
Appears in Collections: 气候变化事实与影响
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作者单位: National Center for Atmospheric Research, Climate and Global Dynamics Division, 1850 Table Mesa Drive, Boulder, CO, United States
Recommended Citation:
Deser C.,Tomas R.A.,Sun L.. The role of ocean-atmosphere coupling in the zonal-mean atmospheric response to Arctic sea ice loss[J]. Journal of Climate,2015-01-01,28(6)