DOI: 10.1002/grl.50421
论文题名: Convectively injected water vapor in the North American summer lowermost stratosphere
作者: Schwartz M.J. ; Read W.G. ; Santee M.L. ; Livesey N.J. ; Froidevaux L. ; Lambert A. ; Manney G.L.
刊名: Geophysical Research Letters
ISSN: 0094-9039
EISSN: 1944-8770
出版年: 2013
卷: 40, 期: 10 起始页码: 2316
结束页码: 2321
语种: 英语
Scopus关键词: Catalytic ozone
; Heterogeneous chemistry
; In-situ observations
; Initial conditions
; Injected water
; Lowermost stratosphere
; Microwave limb sounder
; North American
; Water vapor
; Water injection
; aerosol
; catalysis
; chlorine
; hydrochloric acid
; ozone
; stratosphere
; threshold
; water vapor
; North America
英文摘要: Anderson et al. (2012) (A2012) report in situ observations of convectively injected water vapor (H2O) in the North American (NA) summer lowermost stratosphere (LMS), occasionally exceeding 12ppmv. They contend that, in such cold/wet conditions, heterogeneous chemistry on binary water-sulfate aerosols can activate chlorine, leading to catalytic ozone destruction. Aura Microwave Limb Sounder 100 hPa and 82.5 hPa H2O measurements show that, indeed, the NA LMS is unusually wet, both in mean values and in outliers reaching 18ppmv. Using A2012's threshold, 4% (0.03%) of 100 hPa (82.5 hPa) NA July-August observations are cold/wet enough for activation. Cold parcels, whether wet or dry, typically have much less HCl to activate and O3to destroy than A2012's initial conditions. Slightly lower concentrations of HCl and O3 in cold/wet parcels are attributable, at least in part, to dilution by tropospheric air. Alarming reductions in NA summer column O 3suggested by A2012 are not seen in the current climate. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879957656&doi=10.1002%2fgrl.50421&partnerID=40&md5=31ed667d4c59e20b47975cf6c653b0f2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6303
Appears in Collections: 气候减缓与适应
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, m/s 183-701, Pasadena, CA 91109, United States
Recommended Citation:
Schwartz M.J.,Read W.G.,Santee M.L.,et al. Convectively injected water vapor in the North American summer lowermost stratosphere[J]. Geophysical Research Letters,2013-01-01,40(10).