DOI: 10.1175/JCLI-D-17-0648.1
Scopus记录号: 2-s2.0-85043703228
论文题名: Optimizing the definition of a sudden stratospheric warming
作者: Butler A.H. ; Gerber E.P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2018
卷: 31, 期: 6 起始页码: 2337
结束页码: 2344
语种: 英语
英文关键词: Classification
; Stratosphere
; Stratosphere-troposphere coupling
; Stratospheric circulation
Scopus关键词: Classification (of information)
; Climate models
; Climatology
; Methodical assessment
; Stratosphere-troposphere coupling
; Stratospheric circulations
; Stratospheric temperature
; Stratospheric variability
; Stratospheric winds
; Sudden stratospheric warming
; Zonal-mean zonal winds
; Upper atmosphere
英文摘要: Various criteria exist for determining the occurrence of a major sudden stratospheric warming (SSW), but the most common is based on the reversal of the climatological westerly zonal-mean zonal winds at 60° latitude and 10 hPa in the winter stratosphere. This definition was established at a time when observations of the stratosphere were sparse. Given greater access to data in the satellite era, a systematic analysis of the optimal parameters of latitude, altitude, and threshold for the wind reversal is now possible. Here, the frequency of SSWs, the strength of the wave forcing associated with the events, changes in stratospheric temperature and zonal winds, and surface impacts are examined as a function of the stratospheric wind reversal parameters. The results provide a methodical assessment of how to best define a standard metric for major SSWs. While the continuum nature of stratospheric variability makes it difficult to identify a decisively optimal threshold, there is a relatively narrow envelope of thresholds that work well-and the original focus at 60° latitude and 10 hPa lies within this window. © 2018 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111644
Appears in Collections: 气候减缓与适应
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作者单位: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Chemical Sciences Division, National Oceanic and Atmospheric Administration, Earth System Research Laboratory, Boulder, CO, United States; Courant Institute of Mathematical Sciences, New York University, New York, NY, United States
Recommended Citation:
Butler A.H.,Gerber E.P.. Optimizing the definition of a sudden stratospheric warming[J]. Journal of Climate,2018-01-01,31(6)