globalchange  > 影响、适应和脆弱性
DOI: 10.1002/jgrd.50342
论文题名:
Atmospheric oxidation chemistry and ozone production: Results from SHARP 2009 in Houston, Texas
作者: Ren X.; Van Duin D.; Cazorla M.; Chen S.; Mao J.; Zhang L.; Brune W.H.; Flynn J.H.; Grossberg N.; Lefer B.L.; Rappenglück B.; Wong K.W.; Tsai C.; Stutz J.; Dibb J.E.; Thomas Jobson B.; Luke W.T.; Kelley P.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期:11
起始页码: 5770
结束页码: 5780
语种: 英语
英文关键词: Houston ; Ozone Production ; Photochemsitry ; SHARP
Scopus关键词: Air quality ; Inorganic acids ; Oxidation ; Ozone ; Photolysis ; Urban planning ; Volatile organic compounds ; Aerosol measurement ; Atmospheric oxidation ; Houston ; Hydroperoxyl radical ; Ozone production ; Photochemsitry ; Regional air pollution ; SHARP ; Atmospheric chemistry ; air quality ; atmospheric chemistry ; atmospheric pollution ; environmental management ; environmental policy ; environmental protection ; oxidation ; oxygenation ; ozone ; reaction kinetics ; urban atmosphere ; Houston ; Texas ; United States
英文摘要: Ozone (O3) and secondary fine particles come from the atmospheric oxidation chemistry that involves the hydroxyl radical (OH) and hydroperoxyl radical (HO2), which are together called HOx. Radical precursors such as nitrous acid (HONO) and formaldehyde (HCHO) significantly affect the HOx budget in urban environments. These chemical processes connect surface anthropogenic and natural emissions to local and regional air pollution. Using the data collected during the Study of Houston Atmospheric Radical Precursors (SHARP) in spring 2009, we examine atmospheric oxidation chemistry and O3 production in this polluted urban environment. A numerical box model with five different chemical mechanisms was used to simulate the oxidation processes and thus OH and HO2 in this study. In general, the model reproduced the measured OH and HO2 with all five chemical mechanisms producing similar levels of OH and HO2, although midday OH was overpredicted and nighttime OH and HO2 were underpredicted. The calculated HOx production was dominated by HONO photolysis in the early morning and by the photolysis of O3 and oxygenated volatile organic compounds (OVOCs) in the midday. On average, the daily HOx production rate was 24.6 ppbv d-1, of which 30% was from O3 photolysis, 22% from HONO photolysis, 15% from the photolysis of OVOCs (other than HCHO), 14% from HCHO photolysis, and 13% from O3 reactions with alkenes. The O3 production was sensitive to volatile organic compounds (VOCs) in the early morning but was sensitive to NOx for most of afternoon. This is similar to the behavior observed in two previous summertime studies in Houston: the Texas Air Quality Study in 2000 (TexAQS 2000) and the TexAQS II Radical and Aerosol Measurement Project in 2006 (TRAMP 2006). Ozone production in SHARP exhibits a longer NO x-sensitive period than TexAQS 2000 and TRAMP 2006, indicating that NOx control may be an efficient approach for the O3 control in springtime for Houston. Results from this study provide additional support for regulatory actions to reduce NOx and reactive VOCs in Houston in order to reduce O3 and other secondary pollutants. © 2013. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63687
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: Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States; Air Resources Laboratory, National Oceanic and Atmospheric Administration, College Park, MD, United States; Department of Meteorology, Pennsylvania State University, University Park, PA, United States; Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Geophysical Fluid Dynamics Laboratory, National Oceanic and Atmospheric Administration, Princeton, NJ, United States; Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, United States; Department of Atmospheric and Oceanic Sciences, University of California at Los Angeles, Los Angeles, CA, United States; Jet Propulsion Laboratory, National Aeronautics and Space Administration, Pasadena, CA, United States; Climate Change Research Center, Institute for the Study of Earth, Oceans and Space, University of New Hampshire, Durham, NH, United States; Department of Civil and Environmental Engineering, Washington State University, Seattle, WA, United States

Recommended Citation:
Ren X.,Van Duin D.,Cazorla M.,et al. Atmospheric oxidation chemistry and ozone production: Results from SHARP 2009 in Houston, Texas[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(11)
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