DOI: 10.1002/jgrd.50486
论文题名: Observed effects of solar proton events and sudden stratospheric warmings on odd nitrogen and ozone in the polar middle atmosphere
作者: Päivärinta S.-M. ; Seppälä A. ; Andersson M.E. ; Verronen P.T. ; Thölix L. ; Kyrölä E.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 12 起始页码: 6837
结束页码: 6848
语种: 英语
英文关键词: mesosphere
; odd nitrogen
; ozone
; solar proton events
; stratosphere
; sudden stratospheric warming
Scopus关键词: Atmospheric composition
; Ozone
; Precipitation (chemical)
; Protons
; Solar energy
; Upper atmosphere
; mesosphere
; Mesosphere-lower thermospheres
; Odd nitrogen
; Particle precipitation
; Satellite observations
; Solar proton events
; Stratospheric warmings
; Sudden stratospheric warming
; Atmospheric chemistry
; atmospheric chemistry
; nitrogen
; Northern Hemisphere
; ozone
; particle size
; polar region
; precipitation (chemistry)
; satellite imagery
; solar activity
; solar radiation
; stratosphere
; upper atmosphere
英文摘要: Here we use satellite observations from the ACE-FTS, MLS/Aura and SABER/TIMED to study the effects of solar proton events (SPEs) and strong sudden stratospheric warmings (SSWs) on the middle atmospheric odd nitrogen (NO x ) and ozone levels in the Northern Hemispheric polar region. Three winters (January-March) are considered: (1) 2005 (SPE), (2) 2009 (SSW), and (3) 2012 (SPEs and SSW). These different cases provide a good opportunity to study the roles that transport from the mesosphere-lower thermosphere region and in situ production due to particle precipitation have on stratospheric NO x levels and the consequent effects on the middle atmospheric ozone. The observations show increases in NOx after both the SPEs (days to weeks) and SSWs (weeks to months) by up to a factor of 25 between 40 and 90 km. The largest mesospheric NOx increases are observed following the SSW in late January 2009, but the most substantial effects in the upper stratosphere are seen when both an SSW and in situ production by SPEs take place (2012), even though the in situ NOx production in 2012 was relatively weak in magnitude compared to periods of much higher solar activity. In 2012, both short-term (days, due to SPEs and odd hydrogen) depletion and longer-term (months, due to several drivers) depletion of ozone of up to 90% are observed in the mesosphere and upper stratosphere, coinciding with the enhanced amounts of NOx . Key Points Middle atmospheric composition significantly affected by SPEs and major SSWs NOx increases by a factor of 1-25 between 40-90km after both types of events SPEs enhanced the effects of major SSWs on middle atmosphere chemistry © 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/63630
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: Earth Observation, Finnish Meteorological Institute, PO Box 503, Helsinki 00280, Finland
Recommended Citation:
Päivärinta S.-M.,Seppälä A.,Andersson M.E.,et al. Observed effects of solar proton events and sudden stratospheric warmings on odd nitrogen and ozone in the polar middle atmosphere[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(12)