DOI: 10.1175/JCLI-D-15-0046.1
Scopus记录号: 2-s2.0-84957805842
论文题名: Observed atmospheric coupling between Barents Sea ice and the warm-Arctic cold-Siberian anomaly pattern
作者: Sorokina S.A. ; Li C. ; Wettstein J.J. ; Kvamstø N.G.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 2 起始页码: 495
结束页码: 511
语种: 英语
Scopus关键词: Atmospheric movements
; Climate change
; Climatology
; Heat flux
; Meteorology
; Sea ice
; Air sea interactions
; Arctic
; Atmospheric circulation
; Geographic location
; Surface flux
; Ice
; air-sea interaction
; annual variation
; atmosphere-ocean coupling
; atmospheric circulation
; climate change
; climate forcing
; correlation
; heat flux
; ice cover
; sea ice
; winter
; Arctic Ocean
; Barents Sea
; Siberia
英文摘要: The decline in Barents Sea ice has been implicated in forcing the "warm-Arctic cold-Siberian" (WACS) anomaly pattern via enhanced turbulent heat flux (THF). This study investigates interannual variability in winter [December-February (DJF)] Barents Sea THF and its relationship to Barents Sea ice and the largescale atmospheric flow. ERA-Interim and observational data from 1979/80 to 2011/12 are used. The leading pattern (EOF1: 33%) of winter Barents Sea THF variability is relatively weakly correlated (r = 0.30) with Barents Sea ice and appears to be driven primarily by atmospheric variability. The sea ice-related THF variability manifests itself as EOF2 (20%, r = 0.60). THF EOF2 is robust over the entire winter season, but its link to the WACSpattern is not. However, the WACSpattern emerges consistently as the second EOF (20%) of Eurasian surface air temperature (SAT) variability in all winter months. When Eurasia is cold, there are indeed weak reductions in Barents Sea ice, but the associated THF anomalies are on average negative, which is inconsistent with the proposed direct atmospheric response to sea ice variability. Lead-lag correlation analyses on shorter time scales support this conclusion and indicate that atmospheric variability plays an important role in driving observed variability in Barents Sea THF and ice cover, as well as the WACS pattern. © 2016 American Meteorological Society. 资助项目: G. Unger Vetlesen Foundation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50217
Appears in Collections: 气候变化事实与影响
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作者单位: Nansen Environmental and Remote Sensing Center, Geophysical Institute, University of Bergen, Bjerknes Centre for Climate Research, Bergen, Norway; Geophysical Institute, University of Bergen, Bjerknes Centre for Climate Research, Bergen, Norway; College of Earth, Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States
Recommended Citation:
Sorokina S.A.,Li C.,Wettstein J.J.,et al. Observed atmospheric coupling between Barents Sea ice and the warm-Arctic cold-Siberian anomaly pattern[J]. Journal of Climate,2016-01-01,29(2)