DOI: 10.1029/2012JD017971
论文题名: Comparison of a photochemical model with observations of mesospheric hydroxyl and ozone
作者: Siskind D.E. ; Stevens M.H. ; Englert C.R. ; Mlynczak M.G.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 1 起始页码: 195
结束页码: 207
语种: 英语
英文关键词: mesosphere
Scopus关键词: Broadband emission radiometry
; Comprehensive comparisons
; Laboratory measurements
; mesosphere
; Mesospheric temperature
; Microwave limb sounder
; Photochemical models
; Spatial heterodyne
; Ozone
; air sampling
; atmospheric chemistry
; comparative study
; mesosphere
; microwave limb sounder
; ozone
; photochemistry
英文摘要: We present a comparison of a photochemical model with mesospheric hydroxyl (OH) data from the Spatial Heterodyne Imager for Mesospheric Radicals (SHIMMER) and mesospheric ozone (O3 ) data from the Sounding of the Atmosphere with Broadband Emission Radiometry (SABER). Although SHIMMER and SABER do not measure the atmosphere coincidently, by sampling the photochemical model at the appropriate local time of each measurement, an effective concurrent test of mesospheric odd oxygen and odd hydrogen theory can be achieved. Consistent with previous, more limited analyses of SHIMMER data, we find no evidence of a systematic model overprediction of mesospheric OH. However, at 80 km, the standard chemical scheme shows a model deficit in the morning hours and a dramatic model excess in the late afternoon. Using a higher rate coefficient for the H + O2 + M → HO2 + M reaction ameliorates this problem. Such a higher rate is consistent with the only reported laboratory measurements at the low temperatures appropriate to the mesosphere. Regarding the SABER ozone, the model significantly underpredicts the data. Some of this could be explained by a previously reported, systematic high bias to the SABER ozone, and comparisons of our model with Microwave Limb Sounder data support that suggestion. Nonetheless, a persistent model ozone deficit remains. Since the model agreement with SHIMMER OH is generally very good, this model ozone deficit is unlikely to be due to a mischaracterization of mesospheric HOx. Key Points Comprehensive comparison of a model with both OH and ozone Key chemical rates should be remeasured at mesospheric temperatures Model underpredicts ozone, but OH comparison is good. © 2012 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/63967
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: Space Science Division, Naval Research Laboratory, 4555 Overlook Avenue, SW Washington, DC, 20375, United States; NASA Langley Research Center, Hampton, VA, United States
Recommended Citation:
Siskind D.E.,Stevens M.H.,Englert C.R.,et al. Comparison of a photochemical model with observations of mesospheric hydroxyl and ozone[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(1)