作者:Zheng, S (Zheng, Sheng)[ 1,2,3 ] ; Cao, CX (Cao, Chun-Xiang)[ 1,2,4 ] ; Singh, RP (Singh, Ramesh P.)[ 5 ]
SCIENCE OF THE TOTAL ENVIRONMENT
卷: 488  页: 400-414
DOI: 10.1016/j.scitotenv.2013.12.074
出版年: AUG 1 2014

摘要
Air quality in mega cities is one of the major concerns due to serious health issues and its indirect impact to the climate. Among mega cities, Beijing city is considered as one of the densely populated cities with extremely poor air quality. The meteorological parameters (wind, surface temperature, air temperature and relative humidity) control the dynamics and dispersion of air pollution. China National Environmental Monitoring Centre (CNEMC) started air pollution index (API) as of 2000 to evaluate air quality, but over the years, it was felt that the air quality is not well represented by API. Recently, the Ministry of Environmental Protection (MEP) of the People's Republic of China (PRC) started using a new index "air quality index (AQI)" from January 2013. We have compared API and AQI with three different MODIS (MODIS - Moderate Resolution Imaging SpectroRadiometer, onboard the Terra/Aqua satellites) AOD (aerosol optical depth) products for ten months, January-October, 2013. The correlation between AQI and Aqua Deep Blue AOD was found to be reasonably good as compared with API, mainly due to inclusion of PM2.5 in the calculation of AQI. In addition, for every month, the correlation coefficient between AQI and Aqua Deep Blue AOD was found to be relatively higher in the month of February to May. According to the monthly average distribution of precipitation, temperature, and PM10, the air quality in the months of June-September was better as compared to those in the months of February-May. AQI and Aqua Deep Blue AOD show highly polluted days associated with dust event, representing true air quality of Beijing. (C) 2013 Elsevier B.V. All rights reserved.

通讯作者地址: Singh, RP (通讯作者)
Chapman Univ, Schmid Coll Sci & Technol, Sch Earth & Environm Sci, One Univ Dr, Orange, CA 92866 USA.
地址:
[ 1 ] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China
[ 2 ] Beijing Normal Univ, Beijing 100101, Peoples R China
[ 3 ] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[ 4 ] Ctr Applicat Spatial Informat Technol Publ Hlth, Beijing 100101, Peoples R China
[ 5 ] Chapman Univ, Schmid Coll Sci & Technol, Sch Earth & Environm Sci, Orange, CA 92866 USA