DOI: 10.1002/jgrd.50871
论文题名: Planetary-scale wave activity as a source of varying tropospheric response to stratospheric sudden warming events: A case study
作者: Martineau P. ; Son S.-W.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 19 起始页码: 10994
结束页码: 11006
语种: 英语
英文关键词: climate
; planetary waves
; stratosphere
; stratospheric sudden warming
; vortex
Scopus关键词: Upper atmosphere
; Vortex flow
; climate
; Northern annular mode
; Planetary Waves
; Sources of variability
; Stratosphere-troposphere coupling
; Stratospheric sudden warmings
; Transformed Eulerian means
; Tropospheric circulation
; Troposphere
; climate variation
; meridional circulation
; stratosphere
; troposphere
; uncertainty analysis
; vortex flow
; wave field
; wave propagation
英文摘要: Stratospheric Sudden Warming (SSW) events are typically, but not always, accompanied by negative Northern Annular Mode anomalies in the troposphere. However, large uncertainties remain as to which dynamical processes are responsible for those anomalies. In order to highlight sources of variability in stratosphere-troposphere coupling among SSW events, we present a case study of three selected events and show detailed Transformed Eulerian Mean diagnostics for momentum changes in the stratosphere and troposphere in the course of those events. Our results suggest that planetary-scale waves, especially the zonal wave number 2 component, may play an important role not only for the onset of tropospheric anomalies in response to SSW events but also for introducing variability in the vertical coupling, i.e., whether the tropospheric circulation anomalies lag, lead, or occur simultaneous to the weakening of the vortex. Particularly, the meridional propagation of those waves in the upper troposphere could be an important factor that determines whether SSW events lag or lead tropospheric anomalies. Key Points Planetary-scale wave force deceleration in the troposphere during SSW ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63243
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, Canada; School of Earth and Environmental Sciences, Seoul National University, Bldg. 501, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, South Korea
Recommended Citation:
Martineau P.,Son S.-W.. Planetary-scale wave activity as a source of varying tropospheric response to stratospheric sudden warming events: A case study[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(19)