DOI: 10.1175/JCLI-D-17-0194.1
Scopus记录号: 2-s2.0-85043715018
论文题名: Impact of winter ural blocking on Arctic sea ice: Short-time variability
作者: Chen X. ; Luo D. ; Feldstein S.B. ; Lee S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 6 起始页码: 2267
结束页码: 2282
语种: 英语
英文关键词: Arctic
; Blocking
; North Atlantic oscillation
; Sea ice
Scopus关键词: Atmospheric pressure
; Heat flux
; Infrared radiation
; Sea ice
; Arctic
; Arctic sea ice
; Blocking
; North Atlantic oscillations
; Quasi-stationary
; Sensible and latent heat fluxes
; Sensible heat flux
; Time variability
; Ice
; air-sea interaction
; atmospheric blocking
; climate variation
; infrared radiation
; latent heat flux
; North Atlantic Oscillation
; sea ice
; sensible heat flux
; winter
; Arctic Ocean
; Barents Sea
; Kara Sea
; Urals
英文摘要: Using daily reanalysis data from 1979 to 2015, this paper examines the impact of winter Ural blocking (UB) on winter Arctic sea ice concentration (SIC) change over the Barents and Kara Seas (BKS). A case study of the sea ice variability in the BKS in the 2015/16 and 2016/17 winters is first presented to establish a link between the BKS sea ice variability and UB events. Then the UB events are classified into quasi-stationary (QUB), westward-shifting (WUB), and eastward-shifting (EUB) UB types. It is found that the frequency of the QUB events increases significantly during 1999-2015, whereas the WUB events show a decreasing frequency trend during 1979-2015. Moreover, it is shown that the variation of the BKS-SIC is related to downward infrared radiation (IR) and surface sensible and latent heat flux changes due to different zonal movements of the UB. Calculations show that the downward IR is the main driver of the BKS-SIC decline for QUB events, while the downward IR and surface sensible heat flux make comparable contributions to the BKS-SIC variation for WUB and EUB events. The SIC decline peak lags the QUB and EUB peaks by about 3 days, though QUB and EUB require lesser prior SIC. The QUB gives rise to the largest SIC decline likely because of its longer persistence, whereas the BKS-SIC decline is relatively weak for the EUB. The WUB is found to cause a SIC decline during its growth phase and an increase during its decay phase. Thus, the zonal movement of the UB has an important impact on the SIC variability in BKS. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111651
Appears in Collections: 气候减缓与适应
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作者单位: CAS Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China; Ningbo Collaborative Innovation Center of Nonlinear Hazard System of Ocean and Atmosphere, Ningbo University, Ningbo, China; Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University Park, PA, United States
Recommended Citation:
Chen X.,Luo D.,Feldstein S.B.,et al. Impact of winter ural blocking on Arctic sea ice: Short-time variability[J]. Journal of Climate,2018-01-01,31(6)