DOI: 10.1007/s10584-015-1383-5
Scopus记录号: 2-s2.0-84933678439
论文题名: Regional atmospheric patterns and the delayed sea-ice freeze-up in the western Arctic
作者: Ballinger T.J. ; Sheridan S.C.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2015
卷: 131, 期: 2 起始页码: 229
结束页码: 243
语种: 英语
Scopus关键词: Climate change
; Ice
; Sea ice
; Sea level
; Atmospheric dynamics
; Atmospheric pattern
; Classification approach
; High surface pressure
; Mean sea level pressures
; Multi-decadal time scale
; Passive microwaves
; Thermodynamic process
; Stream flow
; air-sea interaction
; atmospheric transport
; freezing
; heat flux
; ice cover
; melting
; sea ice
; seasonal variation
; synoptic meteorology
; timescale
; Arctic Ocean
英文摘要: The western Arctic sea ice cover has dramatically changed since the late 1970s, particularly the timing of the autumn freeze-up. While atmospheric dynamic and thermodynamic processes associated with synoptic-scale weather patterns largely impact the onset of regional ice formation, linkages between the subseasonal occurrences of these patterns, across interannual to multidecadal time scales, and the freeze-up are not well understood. This manuscript takes a synoptic climatological atmospheric pattern (AP) classification approach to evaluate the role of warm season-dominant (i.e., May-October) mean sea-level pressure (MSLP) and 1000–500 hPa thickness APs, derived from daily NCEP/NCAR reanalysis fields, on the passive microwave-derived freeze-up dates for the marginal Beaufort/Chukchi Seas and western Arctic Ocean from 1979 to 2013. Analysis of the respective classifications’ frequencies and their relationships to the freeze-up reveals that approximately one-third of freeze-up variance may be explained by early/middle warm season Beaufort Sea High surface pressure pattern frequency changes. A similar amount of freeze-up variance is explained by the occurrence of mid-warm season dominant thermal patterns, either earlier or later than their predominant season. Both results suggest that pattern changes may be associated with changing ocean–atmosphere heat exchanges affiliated with lengthened periods of melt conditions. © 2015, Springer Science+Business Media Dordrecht. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84589
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Department of Geography, Kent State University, 413 McGilvrey Hall, Kent, OH, United States
Recommended Citation:
Ballinger T.J.,Sheridan S.C.. Regional atmospheric patterns and the delayed sea-ice freeze-up in the western Arctic[J]. Climatic Change,2015-01-01,131(2)