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《Environmental Science & Technology》 2010-09
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Numerical Analysis on Contribution of SO_2 Concentration from Different Sources to Expo Planning Area

ZHANG Dao-fang,YUAN Li-fen (Department of Environmental Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)  
Based on statistical analysis on discharge of main pollution sources,ADMS-Urban was used to simulate the regularity for change of SO2 concentration in Expo area,including effects of wind direction,wind velocity,clouds coverage and rainfall on the diffusion of SO2 concentration,as well as to find out negative factors affecting air quality in Expo planning area on discharge of SO2 concentration. Results showed that Yangshupu Power Plant gave the most contribution on SO2 concentration to Expo planning area. Cloud coverage can assuage the diffusion of pollutants,while rainfall can wash it away which takes much more effective function than the former on reducing pollutants concentration. Unfavorable factors of SO2 concentration to Expo planning area were wind direction of 36.8o or 190.8o,at which the minimum concentration of SO2 in Expo planning area was 62μg/m3 or 108μg/m3,greatly exceeds the standard of 40μg/m3.
【Fund】: 国家科技支撑计划资助(2006BAJ02A05)
【CateGory Index】: X511
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