气候变化领域集成服务门户(CCPortal): The trend of surface ozone in Beijing from 2013 to 2019: Indications of the persisting strong atmospheric oxidation capacity

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DOI	10.1016/j.atmosenv.2020.117801
	The trend of surface ozone in Beijing from 2013 to 2019: Indications of the persisting strong atmospheric oxidation capacity
	Chen S.; Wang H.; Lu K.; Zeng L.; Hu M.; Zhang Y.
发表日期	2020
ISSN	1352-2310
卷号	242
英文摘要	We report a continuous record of surface ozone (O3) in urban Beijing, China, from 2013 to 2019. A linear fit to the 7-year record shows that the annual MDA8-O3 (the maximum daily average of 8-h O3 concentration) and annual average O3 increased by 2.30 and 1.91 ppbv yr−1 (p < 0.05), respectively. Both the MDA8-O3 level and the number of exceeding days are increased, demonstrating the surface O3 pollution in Beijing is increasingly serious. An overall decrease in annual surface NO2 was observed at a rate of −1.21 ppbv yr−1 (p < 0.01). The total oxidants (Ox, = NO2 + O3) had an upward trend during 2013–2019 at a rate of 0.70 ppbv h−1 (p = 0.168). The increasing O3 and Ox trends imply the atmospheric oxidation capacity is increasing in Beijing, even though the strict emission policies have been implemented. The periodical changes of surface O3 in different time scales are studied. We found that the increases in O3 are mainly at a high O3 level with a threshold of 30 ppbv. The relative diurnal variability of surface O3 is weakened, with a decrease in the diurnal amplitude variation. Both the extremely low and high 5% surface O3 are increased, indicates an overall uplift of surface O3. The weekday periodic trends showed an increment of weekend MDA8-O3 (2.2 ppbv on average) and companies with a decrement of weekend NO2 (1.5 ppbv on average). The weekend effect provides a chance to look insights into reducing O3 exceeding days during summertime and proposes the need for emission abatements of volatile organic compounds to the mitigation of ozone pollution in Beijing. © 2020 Elsevier Ltd
关键词	Beijing China Ozone pollution Photochemistry The trend of O3 Weekend effect
语种	英语
scopus关键词	Nitrogen oxides; Ozone; Volatile organic compounds; Amplitude variations; Atmospheric oxidation capacity; Beijing , China; Different time scale; Diurnal variability; Emission abatement; Ozone pollution; Weekend effects; Air pollution; oxidizing agent; ozone; volatile organic compound; concentration (composition); diurnal variation; oxidation; ozone; pollution policy; spatiotemporal analysis; volatile organic compound; Article; atmosphere; calibration; China; circadian rhythm; humidity; measurement; oxidation; photochemistry; pollution; priority journal; seasonal variation; solar radiation; surface property; Beijing [China]; 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/248926
作者单位	State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; School of Atmospheric Sciences, Sun Yat-sen University, Guangzhou, 510275, China; Guangdong Provincial Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary, Guangzhou, 510275, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China
推荐引用方式 GB/T 7714	Chen S.,Wang H.,Lu K.,et al. The trend of surface ozone in Beijing from 2013 to 2019: Indications of the persisting strong atmospheric oxidation capacity[J],2020,242.
APA	Chen S.,Wang H.,Lu K.,Zeng L.,Hu M.,&Zhang Y..(2020).The trend of surface ozone in Beijing from 2013 to 2019: Indications of the persisting strong atmospheric oxidation capacity.ATMOSPHERIC ENVIRONMENT,242.
MLA	Chen S.,et al."The trend of surface ozone in Beijing from 2013 to 2019: Indications of the persisting strong atmospheric oxidation capacity".ATMOSPHERIC ENVIRONMENT 242(2020).