globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2014.09.056
Scopus记录号: 2-s2.0-84907691991
论文题名:
Reassessing the photochemical production of methanol from peroxy radical self and cross reactions using the STOCHEM-CRI global chemistry and transport model
作者: Khan M; A; H; , Cooke M; C; , Utembe S; R; , Xiao P; , Derwent R; G; , Jenkin M; E; , Archibald A; T; , Maxwell P; , Morris W; C; , South N; , Percival C; J; , Shallcross D; E
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 99
起始页码: 77
结束页码: 84
语种: 英语
英文关键词: Atmospheric life-time ; Global burden ; Methanol ; Photochemical source ; STOCHEM-CRI model
Scopus关键词: Chemistry and transport models ; Cross reaction ; Global burden ; Life-times ; Peroxy radicals ; Photochemical production ; Photochemical sources ; Methanol ; hydroxyl radical ; methanol ; peroxy radical ; abundance estimation ; methanol ; peroxy radical ; photochemistry ; three-dimensional modeling ; troposphere ; volatile organic compound ; altitude ; Article ; dry deposition ; nonhuman ; oxidation ; photochemistry ; reaction analysis ; seasonal variation ; surface property ; wet deposition
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: Methanol (CH3OH) is an oxygenated volatile organic compound (VOC) and one of the most abundant species present in the troposphere. The mass of CH3OH in the atmospheric reservoir, its annual mass flux from sources to sinks, and its global budget have been investigated using STOCHEM-CRI, a global three-dimensional chemistry transport model. Our study shows that the global burden of methanol is 5Tg. The atmospheric life-time of CH3OH is found to be 6.1 days which falls within the range of previous modelling studies. The impact of peroxy radicals on the photochemical production of CH3OH has been studied and suggests that NMVOCs (non-methane Volatile Organic Compounds) are an important source of both peroxy radicals and CH3OH. The photochemical production routes of CH3OH are found to be 48Tg/yr, which are higher than the previous studies and contributes significantly to the total global methanol sources of 287Tg/yr. An additional CH3OH production of 8.2Tg/yr from the reaction of methyl peroxy radicals (CH3O2) with hydroxyl radicals (OH) could be a significant additional source of CH3OH particularly over the tropical oceans which would lead to a revision of the global sources and life cycle of CH3OH. © 2014 Elsevier Ltd.
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被引频次[WOS]:16   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80561
Appears in Collections:气候变化事实与影响

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作者单位: Biogeochemistry Research Centre, School of Chemistry, University of Bristol, Cantock's Close, Bristol, United Kingdom; Rdscientific, Newbury, Berkshire, United Kingdom; Atmospheric Chemistry Services, Okehampton, Devon, United Kingdom; The Centre for Atmospheric Science, The School of Earth, Atmospheric and Environmental Science, The University of Manchester, Simon Building, Brunswick Street, Manchester, United Kingdom; The Met Office, FitzRoy Road, Exeter, Devon, United Kingdom; The School of Earth Sciences, University of Melbourne, Parkville, VIC, Australia; The NCAS-Climate, The Centre for Atmospheric Science, University of Cambridge, Cambridge, United Kingdom

Recommended Citation:
Khan M,A,H,et al. Reassessing the photochemical production of methanol from peroxy radical self and cross reactions using the STOCHEM-CRI global chemistry and transport model[J]. Atmospheric Environment,2014-01-01,99
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