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	PM2.5 data reliability, consistency, and air quality assessment in five Chinese cities
	Liang, Xuan ; Li, Shuo ; Zhang, Shuyi ; Huang, Hui ; Chen, Song Xi
	2016
关键词	air quality assessment data quality heating effect meteorological effects PM2 5 statistical modeling POLLUTION REGRESSION MATTERS MODELS TRENDS
英文摘要	We investigate particulate matter (PM2.5) data reliability in five major Chinese cities: Beijing, Shanghai, Guangzhou, Chengdu, and Shenyang by cross-validating data from the U.S. diplomatic posts and the nearby Ministry of Environmental Protection sites based on 3years' data from January 2013. The investigation focuses on the consistency in air quality assessment derived from the two data sources. It consists of studying (i) the occurrence length and percentage of different PM2.5 concentration ranges; (ii) the air quality assessment for each city; and (iii) the winter-heating effects in Beijing and Shenyang. Our analysis indicates that the two data sources produced highly consistent air quality assessment in the five cities. This is encouraging as it would inject a much needed confidence on the air pollution measurements from China. We also provide air quality assessments on the severity and trends of the fine particulate matter pollution in the five cities. The assessments are produced by statistically constructing the standard monthly meteorological conditions for each city, which are designed to minimize the effects of confounding factors due to yearly variations of some important meteorological variables. Our studies show that Beijing and Chengdu had the worst air quality, while Guangzhou and Shanghai faired the best among the five cities. Most of the five cities had their PM2.5 concentration decreased significantly in the last 2years. By linking the air quality with the amount of energy consumed, our study suggests that the geographical configuration is a significant factor in a city's air quality management and economic development.; China's National Key Research Special Program [SQ2016ZY01002112]; National Key Basic Research Program [2015CB856000]; Center for Statistical Science at Peking University; National Natural Science Foundation of China [11131002, 71532001, 71371016]; Caizhai Scholarship at Peking University [CZ201507]; SCI(E); ARTICLE; huanghui@math.pku.edu.cn; csx@gsm.pku.edu.cn; 17; 10220-10236; 121
语种	英语
出处	SCI
出版者	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/457526]
专题	数学科学学院
推荐引用方式 GB/T 7714	Liang, Xuan,Li, Shuo,Zhang, Shuyi,et al. PM2.5 data reliability, consistency, and air quality assessment in five Chinese cities. 2016-01-01.

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