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DOI	10.5194/acp-19-2845-2019
	Characterization of ozone production in San Antonio; Texas; using measurements of total peroxy radicals
	Anderson D.C.; Pavelec J.; Daube C.; Herndon S.C.; Knighton W.B.; Lerner B.M.; Robert Roscioli J.; Yacovitch T.I.; Wood E.C.
发表日期	2019
ISSN	16807316
起始页码	2845
结束页码	2860
卷号	19 期号:5
英文摘要	Observations of total peroxy radical concentrations ([XO2]+[RO2]C[HO2]) made by the Ethane CHemical AMPlifier (ECHAMP) and concomitant observations of additional trace gases made on board the Aerodyne Mobile Laboratory (AML) during May 2017 were used to characterize ozone production at three sites in the San Antonio, Texas, region. Median daytime [O3] was 48 ppbv at the site downwind of central San Antonio. Higher concentrations of NO and XO2 at the downwind site also led to median daytime ozone production rates .P .O3// of 4.2 ppbv h1, a factor of 2 higher than at the two upwind sites. The 95th percentile of P.O3/ at the upwind site was 15.1 ppbv h1, significantly lower than values observed in Houston. In situ observations, as well as satellite retrievals of HCHO and NO2, suggest that the region was predominantly NOx - limited. Only approximately 20% of observations were in the VOC-limited regime, predominantly before 11:00 EST, when ozone production was low. Biogenic volatile organic compounds (VOCs) comprised 55% of total OH reactivity at the downwind site, with alkanes and non-biogenic alkenes responsible for less than 10% of total OH reactivity in the afternoon, when ozone production was highest. To control ozone formation rates at the three study sites effectively, policy efforts should be directed at reducing NOx emissions. Observations in the urban center of San Antonio are needed to determine whether this policy is true for the entire region. © Author(s) 2019.
语种	英语
scopus关键词	atmospheric chemistry; concentration (composition); nitrogen oxides; nitrous oxide; ozone; peroxy radical; volatile organic compound; San Antonio; Texas; United States
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144597
作者单位	Department of Chemistry, Drexel University, Philadelphia, PA, United States; Aerodyne Research Inc., Billerica, MA, United States; Department of Chemistry and Biochemistry, Montana State University, Bozeman, MT, United States
推荐引用方式 GB/T 7714	Anderson D.C.,Pavelec J.,Daube C.,et al. Characterization of ozone production in San Antonio; Texas; using measurements of total peroxy radicals[J],2019,19(5).
APA	Anderson D.C..,Pavelec J..,Daube C..,Herndon S.C..,Knighton W.B..,...&Wood E.C..(2019).Characterization of ozone production in San Antonio; Texas; using measurements of total peroxy radicals.Atmospheric Chemistry and Physics,19(5).
MLA	Anderson D.C.,et al."Characterization of ozone production in San Antonio; Texas; using measurements of total peroxy radicals".Atmospheric Chemistry and Physics 19.5(2019).