DOI: 10.1002/2013JD020294
论文题名: The influence of major sudden stratospheric warming and elevated stratopause events on the effects of energetic particle precipitation in WACCM
作者: Holt L.A. ; Randall C.E. ; Peck E.D. ; Marsh D.R. ; Smith A.K. ; Harvey V.L.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 20 起始页码: 11636
结束页码: 11646
语种: 英语
英文关键词: elevated stratopause
; energetic particle precipitation
; NOx
; sudden stratospheric warming
Scopus关键词: elevated stratopause
; Energetic particles
; Mesosphere-lower thermospheres
; Northern Hemispheres
; NOx
; Residual circulations
; Sudden stratospheric warming
; Whole atmosphere community climate models
; Upper atmosphere
; atmospheric chemistry
; atmospheric transport
; chemical composition
; climate modeling
; mesosphere
; nitrogen oxides
; Northern Hemisphere
; precipitation (chemistry)
; stratosphere
; thermosphere
; warming
英文摘要: We investigate the influence of major sudden stratospheric warming (SSW) and elevated stratopause (ES) events in the Northern Hemisphere winter on the transport of NOx produced by energetic particle precipitation (EPP) from the mesosphere-lower thermosphere to the stratosphere using the Whole Atmosphere Community Climate Model (WACCM). Increases in NOx following a major SSW and/or ES event are in excess of 100% compared to winters when no major SSW or ES event occurred. The increase in NOx is attributed to an increase in the descending branch of the residual circulation (w̄â̂ -) following the event. The timing of the event strongly affects the amount of NOx that descends to the stratosphere: the earlier the event occurs, the more NOx descends to the stratosphere. We also quantify the amount of NOx produced by EPP descending to the stratosphere in each winter and find that the largest increases in NO x are in years that have a major SSW followed by an ES event early in the season (December or early January). The strength of w̄â̂ - following an event shows a very strong seasonal dependence and explains why the timing of the event affects the transport of NOx . Key Points Timing of major SSW and ES events influences the EPP IE ©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/63201
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: Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, 3665 Discovery Drive, Boulder, CO 80303, United States; Department of Atmospheric and Oceanic Sciences, University of Colorado Boulder, Boulder CO, United States; National Center for Atmospheric Research, Boulder CO, United States
Recommended Citation:
Holt L.A.,Randall C.E.,Peck E.D.,et al. The influence of major sudden stratospheric warming and elevated stratopause events on the effects of energetic particle precipitation in WACCM[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(20)