DOI: 10.1002/2016JD025935
论文题名: A sensitivity analysis of key natural factors in the modeled global acetone budget
作者: Brewer J.F. ; Bishop M. ; Kelp M. ; Keller C.A. ; Ravishankara A.R. ; Fischer E.V.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 3 起始页码: 2043
结束页码: 2058
语种: 英语
英文关键词: acetone
; sensitivity analysis
Scopus关键词: acetone
; biosphere
; concentration (composition)
; dry deposition
; emission inventory
; global climate
; mixed layer
; mixing ratio
; monoterpene
; photolysis
; sensitivity analysis
; source-sink dynamics
; troposphere
英文摘要: Acetone is one of the most abundant carbonyl compounds in the atmosphere, and it serves as an important source of HOx (OH + HO2) radicals in the upper troposphere and a precursor for peroxyacetyl nitrate. We present a global sensitivity analysis targeted at several major natural source and sink terms in the global acetone budget to find the input factor or factors to which the simulated acetone mixing ratio was most sensitive. The ranges of input factors were taken from literature. We calculated the influence of these factors in terms of their elementary effects on model output. Of the six factors tested here, the four factors with the highest contribution to total global annual model sensitivity are direct emissions of acetone from the terrestrial biosphere, acetone loss to photolysis, the concentration of acetone in the ocean mixed layer, and the dry deposition of acetone to ice-free land. The direct emissions of acetone from the terrestrial biosphere are globally important in determining acetone mixing ratios, but their importance varies seasonally outside the tropics. Photolysis is most influential in the upper troposphere. Additionally, the influence of the oceanic mixed layer concentrations are relatively invariant between seasons, compared to the other factors tested. Monoterpene oxidation in the troposphere, despite the significant uncertainties in acetone yield in this process, is responsible for only a small amount of model uncertainty in the budget analysis. ©2017. American Geophysical Union. All Rights Reserved.
资助项目: NNX16AI17G
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62701
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: Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Depertment of Chemistry, Reed College, Portland, OR, United States; School of Engineering and Applied Science, Harvard University, Cambridge, MA, United States; Department of Chemistry, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Brewer J.F.,Bishop M.,Kelp M.,et al. A sensitivity analysis of key natural factors in the modeled global acetone budget[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(3)