DOI: 10.1002/2014GL059480
论文题名: Impact of acetone (photo)oxidation on HOx production in the UT/LMS based on CARIBIC passenger aircraft observations and EMAC simulations
作者: Neumaier M. ; Ruhnke R. ; Kirner O. ; Ziereis H. ; Stratmann G. ; Brenninkmeijer C.A.M. ; Zahn A.
刊名: Geophysical Research Letters
ISSN: 0094-10094
EISSN: 1944-9825
出版年: 2014
卷: 41, 期: 9 起始页码: 3289
结束页码: 3297
语种: 英语
英文关键词: acetone
; CARIBIC
; HOx
; PTRMS
; tropopause
; VOCs
Scopus关键词: Aircraft
; Atmospheric chemistry
; Oxidation
; Ozone
; Photodegradation
; Photodissociation
; Photolysis
; Troposphere
; CARIBIC
; HOx
; PTRMS
; tropopause
; VOCs
; Acetone
; acetone
; atmospheric chemistry
; numerical model
; oxidation
; stratosphere
; trace gas
; tropopause
; troposphere
; volatile organic compound
英文摘要: Until a decade ago, acetone was assumed to be a dominant HOx source in the dry extra-tropical upper troposphere (ex-UT). New photodissociation quantum yields of acetone and the lack of representative data from the ex-UT challenged that assumption. Regular mass spectrometric observations onboard the Civil Aircraft for the Regular Investigation of the atmosphere Based on an Instrument Container (CARIBIC) passenger aircraft deliver the first representative distribution of acetone in the UT/LMS (UT/lowermost stratosphere). Based on diverse CARIBIC trace gas data and non-observed parameters taken from the model ECHAM5/MESSy for Atmospheric Chemistry, we quantify the HOx source in the UT/LMS from (photo)oxidation of acetone. The findings are contrasted to HOx production from ozone photolysis, overall the dominant tropospheric HOx source. It is shown that HOx production from acetone (photo)oxidation reaches up to 95% of the HOx source from ozone photolysis in autumn in the UT and on average ~61% in summer. That is, acetone is a significant source of HO x in the UT/LMS. Key Points Representative data set of acetone in the UT/LMS on a global scale from CARIBIC HOx production due to acetone degradation and from O3 photolysis are contrasted Year-around acetone is a significant source of HOx in the upper troposphere © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901930035&doi=10.1002%2f2014GL059480&partnerID=40&md5=99f47b3e4161b9ab472d3968908ef0f9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7358
Appears in Collections: 气候减缓与适应
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作者单位: Karlsruhe Institute of Technology (KIT), Institute of Meteorology and Climate Research (IMK-ASF), Karlsruhe, Germany
Recommended Citation:
Neumaier M.,Ruhnke R.,Kirner O.,et al. Impact of acetone (photo)oxidation on HOx production in the UT/LMS based on CARIBIC passenger aircraft observations and EMAC simulations[J]. Geophysical Research Letters,2014-01-01,41(9).