DOI: 10.1007/s00382-011-1243-6
Scopus记录号: 2-s2.0-84861819882
论文题名: A methodology for the comparison of blocking climatologies across indices, models and climate scenarios
作者: Barnes E.A. ; Slingo J. ; Woollings T.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 38, 期: 2017-11-12 起始页码: 2467
结束页码: 2481
语种: 英语
英文关键词: AR4
; Blocking anticyclone
; Climate change
; CMIP3
英文摘要: There is urgent need for a consistent blocking identification method that can be used and compared across reanalyses, models and climate scenarios. We present such a method and diagnose daily blocking frequency in 43 years (1958-2000) of ERA-40 Reanalysis for indices defined on both the commonly used geopotential height and potential temperature fields as well as a zonal wind index. Applications of various blocking indices to the same data highlights the importance of a consistent methodology for comparison and a method that identifies blocks along a path that varies with the latitude of the storm track. Since the method accommodates blocking detection using 500 mb zonal-wind which is readily available in climate model output, we diagnose blocking in 14 CMIP3 models under two different greenhouse gas scenarios. Blocking duration remains nearly constant among the scenarios, but a robust reduction in blocking frequency with global warming is demonstrated. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55263
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Atmospheric Sciences, University of Washington, Box 351640, Seattle, WA 98195, United States; Met Office, Exeter, United Kingdom; Department of Meteorology, University of Reading, Reading, United Kingdom
Recommended Citation:
Barnes E.A.,Slingo J.,Woollings T.. A methodology for the comparison of blocking climatologies across indices, models and climate scenarios[J]. Climate Dynamics,2012-01-01,38(2017-11-12)