气候变化领域集成服务门户(CCPortal): Spatiotemporal variability and driving factors of ground-level summertime ozone pollution over eastern China

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DOI	10.1016/j.atmosenv.2021.118686
	Spatiotemporal variability and driving factors of ground-level summertime ozone pollution over eastern China
	Liu H.; Liu J.; Liu Y.; Yi K.; Yang H.; Xiang S.; Ma J.; Tao S.
发表日期	2021
ISSN	1352-2310
卷号	265
英文摘要	Ground-level ozone is detrimental to human and vegetation health. The ground-level ozone concentration in China has been increasing in recent years. It is necessary to take actions to mitigate ozone pollution. Identifying the variability of ozone concentration is significant for developing an optimal mitigation strategy. In this study, complex empirical orthogonal functions (CEOFs) are used to analyze the spatial-temporal variability in the summertime surface ozone distribution over eastern China during 2015–2017. The first CEOF explains 50% of the ozone variance and represents anthropogenic sources over the North China, with an O3 exceedance period of 7–9 days (maximum daily 8-h average (MDA8) O3 more than 160 μg m−3). The second CEOF indicates a north-south dipole pattern of ozone fluctuation over eastern China. This pattern is mainly subject to the north-south movement of the subtropical high over eastern China and is ultimately modulated by the Philippine Sea Anticyclone Anomaly (PSAA). Our results suggest that policymakers should take weather patterns and interactions between different regions into consideration when designing a strategy to meet O3 air quality objectives. © 2021
关键词	Complex empirical orthogonal functions Ground-level ozone Spatial-temporal variability
语种	英语
scopus关键词	Orthogonal functions; Ozone; Complex empirical orthogonal functions; Driving factors; Eastern China; Ground level; Ground-level ozone; Ozone pollution; Spatial temporals; Spatial-temporal variability; Spatiotemporal variability; Temporal variability; Air quality; ozone; air quality; anthropogenic source; anticyclone; atmospheric pollution; empirical orthogonal function analysis; mitigation; ozone; spatiotemporal analysis; summer; weather forecasting; aerosol; air pollution; air quality; air quality standard; ambient air; Article; China; controlled study; dipole; Fourier transform; human; meteorological phenomena; precipitation; relative humidity; seasonal variation; spatiotemporal analysis; spring; summer; surface property; weather; winter; China; Pacific Ocean; Philippine Sea
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/248217
作者单位	College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China; Now at Gillings School of Global Public Health, University of North Carolina at Chapel HillNC, United States; School of Statistics, University of International Business and Economics, Beijing, 100029, China
推荐引用方式 GB/T 7714	Liu H.,Liu J.,Liu Y.,et al. Spatiotemporal variability and driving factors of ground-level summertime ozone pollution over eastern China[J],2021,265.
APA	Liu H..,Liu J..,Liu Y..,Yi K..,Yang H..,...&Tao S..(2021).Spatiotemporal variability and driving factors of ground-level summertime ozone pollution over eastern China.ATMOSPHERIC ENVIRONMENT,265.
MLA	Liu H.,et al."Spatiotemporal variability and driving factors of ground-level summertime ozone pollution over eastern China".ATMOSPHERIC ENVIRONMENT 265(2021).