Abstract：During June 8-11 2012, a continuous air pollution event occurred in Jiangsu and Anhui provinces. By using MODIS sensor aerosol productions, meteorological data and fire-spot data as well as HYSPLIT backward trajectory mode, Aerosol Optical Depth (AOD), Fine Mode Fraction (FMF) and Air Pollution Index (API) were analyzed to reveal the possible reasons for this event. Results indicated that, the visibilities in eight cities of the two provinces were mostly less than 10 km, and the relative humidities were below 90%. The API was equal to or exceeded the pollution grade. There was a significant increasing for AOD during this event. Fine particles emitted from human activities were dominated pollutants. The Regional Fine Mode Fraction (RFMF) was up to 0.79, and the frequency for FMF higher than 0.6 was 74.8%. During the pollution course, the weather condition was steady and unfavorable for pollutants dispersing. In June 8-11, lots of fires spots appeared indicating there were biomass burning events according to the MODIS sensor. Backward trajectory analysis indicated that the air in the eight cities were mostly influenced by air masses from the west which may introduce pollutants emitted from biomass burning. Local air masses also influence the air quality in these cities which were not favourable for air dispersing. Then the pollutants will be easily accumulated to form pollution.
陈烨鑫, 朱彬, 尹聪, 侯雪伟, 王红磊, 康汉青, 刘晓慧. 基于卫星遥感和地面观测资料分析苏皖两省一次空气污染过程[J]. 中国环境科学, 2014, 34(4): 827-836.
CHEN Ye-Xin, ZHU Bin, YIN Cong, HOU Xue-Wei, WANG Hong-Lei, KANG Han-Qing, LIU Xiao-Hui. A continuous air pollution event in Jiangsu and Anhui provinces based on satellite remote sensing and field observations. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(4): 827-836.
