DOI: 10.1175/JCLI-D-15-0669.1
Scopus记录号: 2-s2.0-84977542694
论文题名: Dynamical link between the Barents-Kara sea ice and the arctic oscillation
作者: Yang X.-Y. ; Yuan X. ; Ting M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 14 起始页码: 5103
结束页码: 5122
语种: 英语
Scopus关键词: Atmospheric pressure
; Atmospheric thermodynamics
; Climate change
; Climatology
; Heat flux
; Meteorology
; Sea ice
; Arctic Oscillation
; Atmosphere-ocean interactions
; Interannual variability
; Stationary waves
; Trends
; Variability
; Ice
; air-sea interaction
; annual variation
; Arctic Oscillation
; atmospheric circulation
; climate change
; North Atlantic Oscillation
; sea ice
; standing wave
; trend analysis
; Arctic Ocean
; Barents Sea
; Kara Sea
英文摘要: The recent accelerated Arctic sea ice decline has been proposed as a possible forcing factor for midlatitude circulation changes, which can be projected onto the Arctic Oscillation (AO) and/or North Atlantic Oscillation (NAO) mode. However, the timing and physical mechanisms linking AO responses to the Arctic sea ice forcing are not entirely understood. In this study, the authors suggest a connection between November sea ice extent in the Barents and Kara Seas and the following winter's atmospheric circulation in terms of the fast sea ice retreat and the subsequent modification of local air-sea heat fluxes. In particular, the dynamical processes that link November sea ice in the Barents and Kara Seas with the development of AO anomalies in February is explored. In response to the lower-tropospheric warming associated with the initial thermal effect of the sea ice loss, the large-scale atmospheric circulation goes through a series of dynamical adjustment processes: The decelerated zonal-mean zonal wind anomalies propagate gradually from the subarctic to midlatitudes in about one month. The equivalent barotropic AO dipole pattern develops in January because of wave-mean flow interaction and firmly establishes itself in February following the weakening and warming of the stratospheric polar vortex. This connection between sea ice loss and the AO mode is robust on time scales ranging from interannual to decadal. Therefore, the recent winter AO weakening and the corresponding midlatitude climate change may be partly associated with the early winter sea ice loss in the Barents and Kara Seas. © 2016 American Meteorological Society. 资助项目: NSFC, Natural Science Foundation of China
; ONR, Office of Naval Research
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50253
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States
Recommended Citation:
Yang X.-Y.,Yuan X.,Ting M.. Dynamical link between the Barents-Kara sea ice and the arctic oscillation[J]. Journal of Climate,2016-01-01,29(14)