DOI: 10.1002/jgrd.50559
论文题名: Role of meteorological processes in ozone responses to emission controls in California's San Joaquin Valley
作者: Jin L. ; Loisy A. ; Brown N.J.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 14 起始页码: 8010
结束页码: 8022
语种: 英语
英文关键词: Air pollution meteorology
; central California
; local vs upwind contributions
; ozone control
; photochemical modeling CMAQ
; sensitivity analysis
Scopus关键词: Atmospheric movements
; Meteorology
; Nitrogen oxides
; Sensitivity analysis
; Volatile organic compounds
; Air pollution meteorology
; California
; local vs upwind contributions
; Ozone control
; Photochemical modeling
; Ozone
; emission control
; meteorology
; nitrogen oxides
; ozone
; photochemistry
; sensitivity analysis
; three-dimensional modeling
; volatile organic compound
; California
; San Joaquin Hills
; United States
英文摘要: We conducted a first-order sensitivity analysis to investigate ozone responses to precursor emissions and source contributions (local versus upwind) for California's San Joaquin Valley (SJV) under four distinct meteorology conditions of summer 2000 using a three-dimensional photochemical transport model. Ozone-limiting reagents, nitrogen oxides (NOx ), or anthropogenic volatile organic compounds (VOCs) (AVOCs) and their transition regime were determined from ozone sensitivity coefficients and delineated spatially at high-ozone locations in the SJV. In general, AVOC-limited areas were located near urban centers, while NOx -limited areas were located farther downwind. However, the spatial extent of AVOC-limited areas varied with meteorology. Meteorological dependence of predominant ozone-limiting precursors was found to vary significantly among different subregions within the SJV. Specifically, weaker dependences were identified for regions of the southern SJV located farther away from emission sources, where ozone chemistry was mostly limited by NOx for the episodes considered. Stronger dependences were identified for the central and northern SJV, where ozone chemistry can be limited by NOx or AVOC depending on meteorology. Source contributions to ozone sensitivities in the SJV were also investigated. Local sources were important for the eastern side of the central SJV, while upwind sources were also important (from ~40% to more than 50% of the total ozone sensitivities) for the western side of the valley, except for the most stagnant episode. Different contributing source regions were identified for the same VOC-limited areas in the northern SJV, and these depended on the flow characteristics. The predominant ozone-limiting reagent was found to exhibit less dependence on meteorology in the central and southern SJV as the baseline NOx emissions were reduced, ultimately causing ozone formation to be limited by NOx . In contrast, the VOC-limited areas in the northern SJV continued to be influenced by meteorology for two of the episodes. Key Points Ozone limiting regimes depend on meteorological conditions Local vs upwind contributions depends on flow characteristics Emission changes affect the meteorological dependences of ozone control. ©2013. 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/63508
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: Lawrence Berkeley National Laboratory, Berkeley CA 94720, United States
Recommended Citation:
Jin L.,Loisy A.,Brown N.J.. Role of meteorological processes in ozone responses to emission controls in California's San Joaquin Valley[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(14)