气候变化领域集成服务门户(CCPortal): Exploring the drivers of the increased ozone production in Beijing in summertime during 2005-2016

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DOI	10.5194/acp-20-15617-2020
	Exploring the drivers of the increased ozone production in Beijing in summertime during 2005-2016
	Wang W.; Parrish D.D.; Li X.; Shao M.; Liu Y.; Mo Z.; Lu S.; Hu M.; Fang X.; Wu Y.; Zeng L.; Zhang Y.
发表日期	2020
ISSN	1680-7316
起始页码	15617
结束页码	15633
卷号	20 期号:24
英文摘要	In the past decade, average PM2:5 concentrations decreased rapidly under the strong pollution control measures in major cities in China; however, ozone (O3) pollution emerged as a significant problem. Here we examine a unique (for China) 12-year data set of ground-level O3 and precursor concentrations collected at an urban site in Beijing (PKUERS, campus of Peking University), where the maximum daily 8 h average (MDA8) O3 concentration and daytime Ox (O3 CNO2) concentration in August increased by 2:3±1:2 ppbv (C3:3±1:8 %) yr- and 1:4±0:6 (C1:9±0:8 %) yr-, respectively, from 2005 to 2016. In contrast, daytime concentrations of nitrogen oxides (NOx ) and the OH reactivity of volatile organic compounds (VOCs) both decreased significantly. Over this same time, the decrease of particulate matter (and thus the aerosol optical depth) led to enhanced solar radiation and photolysis frequencies, with near-surface J .NO2/increasing at a rate of 3:6±0:8%yr-. We use an observation-based box model to analyze the combined effect of solar radiation and ozone precursor changes on ozone production rate, P.O3/. The results indicate that the ratio of the rates of decrease of VOCs and NOx (about 1.1) is inefficient in reducing ozone production in Beijing. P.O3/increased during the decade due to more rapid atmospheric oxidation caused to a large extent by the decrease of particulate matter. This elevated ozone production was driven primarily by increased actinic flux due to PM2:5 decrease and to a lesser extent by reduced heterogeneous uptake of HO2. Therefore, the influence of PM2:5 on actinic flux and thus on the rate of oxidation of VOCs and NOx to ozone and to secondary aerosol (i.e., the major contributor to PM2:5/is important for determining the atmospheric effects of controlling the emissions of the common precursors of PM2:5 and ozone when attempting to control these two important air pollutants. © Author(s) 2020.
英文关键词	atmospheric pollution; concentration (composition); nitrogen oxides; ozone; particulate matter; summer; volatile organic compound; Beijing [Beijing (ADS)]; Beijing [China]; China
语种	英语
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/168882
作者单位	State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; International Joint Laboratory for Regional Pollution Control, Ministry of Education, Beijing, 100816, China; Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing, 210044, China; Department of Physics, University of Helsinki, Helsinki, Finland
推荐引用方式 GB/T 7714	Wang W.,Parrish D.D.,Li X.,et al. Exploring the drivers of the increased ozone production in Beijing in summertime during 2005-2016[J],2020,20(24).
APA	Wang W..,Parrish D.D..,Li X..,Shao M..,Liu Y..,...&Zhang Y..(2020).Exploring the drivers of the increased ozone production in Beijing in summertime during 2005-2016.Atmospheric Chemistry and Physics,20(24).
MLA	Wang W.,et al."Exploring the drivers of the increased ozone production in Beijing in summertime during 2005-2016".Atmospheric Chemistry and Physics 20.24(2020).