气候变化领域集成服务门户(CCPortal): The observation-based relationships between PM2.5 and AOD over China

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DOI	10.1002/2015JD024655
	The observation-based relationships between PM2.5 and AOD over China
	Xin, Jinyuan; Gong, Chongshui; Liu, Zirui; Cong, Zhiyuan; Gao, Wenkang; Song, Tao; Pan, Yuepeng; Sun, Yang; Ji, Dongsheng; Wang, Lili; Tang, Guiqian; Wang, Yuesi
通讯作者	Xin, JY ; Wang, YS (通讯作者)
发表日期	2016
ISSN	2169-897X
EISSN	2169-8996
起始页码	10701
结束页码	10716
卷号	121 期号:18
英文摘要	This is the first investigation of the generalized linear regressions of PM2.5 and aerosol optical depth (AOD) with the Campaign on atmospheric Aerosol Research-China network over the large high-concentration aerosol region during the period from 2012 to 2013. The map of the PM2.5 and AOD levels showed large spatial differences in the aerosol concentrations and aerosol optical properties over China. The ranges of the annual mean PM2.5 and AOD were 10-117 mu g/m(3) and 0.12-1.11 from the clean regions to seriously polluted regions, from the almost arctic and the Tibetan Plateau to tropical environments. There were significant spatial agreements and correlations between the PM2.5 and AOD. However, the linear regression functions (PM2.5=A*AOD+B) exhibited large differences in different regions and seasons. The slopes (A) were from 13 to 90, the intercepts (B) were from 0.8 to 33.3, and the correlation coefficients (R-2) ranged from 0.06 to 0.75. The slopes (A) were much higher in the north (41-99) than in the south (13-64) because the extinction efficiency of hygroscopic aerosol was rapidly increasing with the increasing humidity from the dry north to the humid south. Meanwhile, the intercepts (B) were generally lower, and the correlation coefficients (R-2) were much higher in the dry north than in the humid south. There was high consistency of AOD versus PM2.5 for all sites in three ranges of the atmospheric column precipitable water vapor (PWV). The segmented linear regression functions were y=84.66x+9.85 (PWV<1.0), y=69.47x+11.87 (1.02.5). The correlation coefficients (R-2) were high from 0.64 to 0.70 across China.
关键词	AEROSOL OPTICAL DEPTH IMAGING SPECTRORADIOMETER MODIS PARTICULATE MATTER AIR-QUALITY EMPIRICAL RELATIONSHIP SUN PHOTOMETER UNITED-STATES RIVER DELTA WATER-VAPOR POLLUTION
英文关键词	PM2; 5a; AOD; air pollution; China
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000385836000018
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258663
推荐引用方式 GB/T 7714	Xin, Jinyuan,Gong, Chongshui,Liu, Zirui,et al. The observation-based relationships between PM2.5 and AOD over China[J]. 中国科学院青藏高原研究所,2016,121(18).
APA	Xin, Jinyuan.,Gong, Chongshui.,Liu, Zirui.,Cong, Zhiyuan.,Gao, Wenkang.,...&Wang, Yuesi.(2016).The observation-based relationships between PM2.5 and AOD over China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,121(18).
MLA	Xin, Jinyuan,et al."The observation-based relationships between PM2.5 and AOD over China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 121.18(2016).