气候变化领域集成服务门户(CCPortal): Analysis of surface and vertical measurements of O3 and its chemical production in the NCP region; China

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DOI	10.1016/j.atmosenv.2020.117759
	Analysis of surface and vertical measurements of O3 and its chemical production in the NCP region; China
	Han S.; Yao Q.; Tie X.; Zhang Y.; Zhang M.; Li P.; Cai Z.
发表日期	2020
ISSN	13522310
卷号	241
英文摘要	Ozone has become a major atmospheric pollutant in the North Central Plain (NCP) of China. Comprehensive measurements concerning the vertical profiles and photochemical formation mechanisms of typical O3 pollution episode during August 8–13, 2018 were conducted in the NCP. A maximum hourly ozone concentration of 346 μg/m3 was observed on Aug 10, in which the surface O3 photochemistry was under a strong VOC-limited regime, and the ratio of VOC to NOX ranged from 4:1 to 4:3, with ethylene, toluene, xylene, and propene providing large contributions to O3 chemical production. The vertical measurements of O3, NOX, and the planetary boundary layer (PBL) height suggested that there were three different layers of photochemical O3 production from the surface to 1.1 km. The first layer was from the surface to 200 m, with high NO concentrations leading to a strong conversion between O3 and NO2. The surface O3 concentration was significantly lower than at 220 m during nighttime and early morning, with an average O3 of approximately 60 μg/m3 and the maximum vertical gradient appearing in the early morning. Diurnal variations of NO2 and NO2 were significantly inversely correlated with O3 and O3. In the second vertical layer between 200 m and 1000 m the value of d[O3]/dt ranged from 10 to 40 μg/m3/h, and the maximum chemical production of O3 occurred at 300 m. The third layer was located outside the PBL height, where O3 precursors with short chemical lifetimes rapidly decreased, producing weak chemical O3 production. © 2020
英文关键词	Chemical production; Comprehensive measurement; NCP; PBL height; Vertical profiles
语种	英语
scopus关键词	Aliphatic compounds; Boundary layer flow; Boundary layers; Chemical analysis; Ethylene; Nitrogen oxides; Ozone; Photochemical forming; Atmospheric pollutants; Chemical production; Comprehensive measurement; Formation mechanism; Ozone concentration; Planetary boundary layers; Pollution episodes; Vertical gradients; Air pollution; ethylbenzene; ethylene; isopentane; isoprene; ozone; propylene; toluene; volatile organic compound; xylene; atmospheric pollution; boundary layer; concentration (composition); diurnal variation; episodic event; ethylene; nitrate; ozone; photochemistry; toluene; xylene; air pollution; air quality; ambient air; Article; boundary layer; China; circadian rhythm; meteorology; ozonation; ozone layer; photochemistry; priority journal; surface property; ultraviolet radiation; China
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144959
作者单位	CMA-NKU Joint Laboratory for Urban, Regional Atmospheric Environment Research, Tianjin, 300074, China; Meteorological and Environmental Center of Tianjin, Tianjin, 300074, China; Tianjin Institute of Meteorological Science, Tianjin, 300074, China; KLACP, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
推荐引用方式 GB/T 7714	Han S.,Yao Q.,Tie X.,et al. Analysis of surface and vertical measurements of O3 and its chemical production in the NCP region; China[J],2020,241.
APA	Han S..,Yao Q..,Tie X..,Zhang Y..,Zhang M..,...&Cai Z..(2020).Analysis of surface and vertical measurements of O3 and its chemical production in the NCP region; China.Atmospheric Environment,241.
MLA	Han S.,et al."Analysis of surface and vertical measurements of O3 and its chemical production in the NCP region; China".Atmospheric Environment 241(2020).