Estimation of daily PM2.5 concentration and its relationship with meteorological conditions in Beijing

doi:10.1016/j.jes.2016.03.024

	Estimation of daily PM2.5 concentration and its relationship with meteorological conditions in Beijing
	Yin, Qian 1; Wang, Jinfeng 1,2; Hu, Maogui 1; Wong, Hoting 1
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2016-10-01
卷号	48 页码:161-168
关键词	PM10 concentration PM2.5 concentration estimation Wind speed Wind direction
ISSN号	1001-0742
DOI	10.1016/j.jes.2016.03.024
通讯作者	Wang, Jinfeng(wangjf@lreis.ac.cn)
英文摘要	When investigating the impact of air pollution on health, particulate matter less than 2.5 mu m in aerodynamic diameter (PM2.5) is considered more harmful than particulates of other sizes. Therefore, studies of PM2.5 have attracted more attention. Beijing, the capital of China, is notorious for its serious air pollution problem, an issue which has been of great concern to the residents, government, and related institutes for decades. However, in China, significantly less time has been devoted to observing PM2.5 than for PM10. Especially before 2013, the density of the PM2.5 ground observation network was relatively low, and the distribution of observation stations was uneven. One solution is to estimate PM2.5 concentrations from the existing data on PM10. In the present study, by analyzing the relationship between the concentrations of PM2.5 and PM10, and the meteorological conditions for each season in Beijing from 2008 to 2014, a U-shaped relationship was found between the daily maximum wind speed and the daily PM concentration, including both PM2.5 and PM10. That is, the relationship between wind speed and PM concentration is not a simple positive or negative correlation in these wind directions; their relationship has a complex effect, with higher PM at low and high wind than for moderate winds. Additionally, in contrast to previous studies, we found that the PM2.5/PM10 ratio is proportional to the mean relative humidity (MRH). According to this relationship, for each season we established a multiple nonlinear regression (MNLR) model to estimate the PM2.5 concentrations of the missing periods. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
资助项目	National Science & Technology Major Program of China[2012CB955503] ; National Natural Science Foundation of China[41421001] ; National Natural Science Foundation of China[41301425] ; National Natural Science Foundation of China[41271404]
WOS关键词	AEROSOL OPTICAL-PROPERTIES ; AIR-POLLUTION ; NORTH CHINA ; HEAVY HAZE ; EPISODE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000387820400017
资助机构	National Science & Technology Major Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/65789]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Jinfeng
作者单位	1.Chinese Acad Sci, LREIS, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Yin, Qian,Wang, Jinfeng,Hu, Maogui,et al. Estimation of daily PM2.5 concentration and its relationship with meteorological conditions in Beijing[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2016,48:161-168.
APA	Yin, Qian,Wang, Jinfeng,Hu, Maogui,&Wong, Hoting.(2016).Estimation of daily PM2.5 concentration and its relationship with meteorological conditions in Beijing.JOURNAL OF ENVIRONMENTAL SCIENCES,48,161-168.
MLA	Yin, Qian,et al."Estimation of daily PM2.5 concentration and its relationship with meteorological conditions in Beijing".JOURNAL OF ENVIRONMENTAL SCIENCES 48(2016):161-168.