气候变化领域集成服务门户(CCPortal): Atmospheric reactivity and oxidation capacity during summer at a suburban site between Beijing and Tianjin

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DOI	10.5194/acp-20-8181-2020
	Atmospheric reactivity and oxidation capacity during summer at a suburban site between Beijing and Tianjin
	Yang Y.; Wang Y.; Zhou P.; Yao D.; Ji D.; Sun J.; Wang Y.; Zhao S.; Huang W.; Yang S.; Chen D.; Gao W.; Liu Z.; Hu B.; Zhang R.; Zeng L.; Ge M.; Petäjä T.; Kerminen V.M.; Kulmala M.; Wang Y.
发表日期	2020
ISSN	16807316
起始页码	8181
结束页码	8200
卷号	20 期号:13
英文摘要	Hydroxyl (OH) radicals, nitrate (NO3) radicals and ozone (O3) play central roles in the troposphere because they control the lifetimes of many trace gases that result from anthropogenic and biogenic origins. To estimate the air chemistry, the atmospheric reactivity and oxidation capacity were comprehensively analyzed based on a parameterization method at a suburban site in Xianghe in the North China Plain from 6 July 2018 to 6 August 2018. The total OH, NO3 and O3 reactivities at the site varied from 9.2 to 69.6, 0.7 to 27.5 and 3:3104 to 1:8102 s1 with campaign-Averaged values of 27:59:7, 2:22:6 and 1:21:7103 s1 (standard deviation), respectively. NOx (NOCNO2) was by far the main contributor to the reactivities of the three oxidants, with average values of 43 % 99 %. Alkenes dominated the OH, NO3 and O3 reactivities towards total nonmethane volatile organic compounds (NMVOCs), accounting for 42.9 %, 77.8% and 94.0 %, respectively. The total OH, NO3 and O3 reactivities displayed similar diurnal variations with the lowest values during the afternoon but the highest values during rush hours, and the diurnal profile of NOx appears to be the major driver for the diurnal profiles of the reactivities of the three oxidants. A box model (a model to Simulate the concentrations of Organic vapors, Sulfuric Acid and Aerosols; SOSAA) derived from a column chemical transport model was used to simulate OH and NO3 concentrations during the observation period. The calculated atmospheric oxidation capacity (AOC) reached 4:5108 moleculescm3 s1, with a campaign-Averaged value of 7:8107 moleculescm3 s1 dominated by OH (7:7107 moleculescm3 s1, 98.2 %), O3 (1:2106 moleculescm3 s1, 1.5 %) and NO3 (1:8 105 moleculescm3 s1, 0.3 %). Overall, the integration of OH, NO3 and O3 reactivities analysis could provide useful insights for NMVOC pollution control in the North China Plain. We suggest that further studies, especially direct observations of OH and NO3 radical concentrations and their reactivities, are required to better understand trace gas reactivityand AOC. © 2020 American Society of Civil Engineers (ASCE). All rights reserved.
语种	英语
scopus关键词	atmospheric chemistry; hydroxyl radical; nitrate; oxidation; ozone; reactive transport; suburban area; summer; trace gas; volatile organic compound; Beijing [Beijing (ADS)]; Beijing [China]; China; Tianjin
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/143937
作者单位	Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; University of the Chinese Academy of Sciences, Beijing, 100049, China; Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, P.O. Box 64, 00014 University of Helsinki, Helsinki, Finland; Climate and Marine Sciences Department, Eurasia Institute of Earth Sciences, Istanbul Technical University, Maslak, Istanbul, 34469, Turkey; Department of Environmental Science and Engineering, Beijing University of Chemical Technology, Beijing, 10029, China; State Joint Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Cas Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; Center for Excellence in Regional Atmospheric Environment, Insti...
推荐引用方式 GB/T 7714	Yang Y.,Wang Y.,Zhou P.,et al. Atmospheric reactivity and oxidation capacity during summer at a suburban site between Beijing and Tianjin[J],2020,20(13).
APA	Yang Y..,Wang Y..,Zhou P..,Yao D..,Ji D..,...&Wang Y..(2020).Atmospheric reactivity and oxidation capacity during summer at a suburban site between Beijing and Tianjin.Atmospheric Chemistry and Physics,20(13).
MLA	Yang Y.,et al."Atmospheric reactivity and oxidation capacity during summer at a suburban site between Beijing and Tianjin".Atmospheric Chemistry and Physics 20.13(2020).