Evaluation of the effect of air pollution control during the Beijing 2008 Olympic Games using Lidar data  

作　　者：YANG Ting WANG ZiFa ZHANG Bai WANG XiQuan WANG Wei GBAUIDI Alex GONG YanBang 

机构地区：[1]Geography and Remote sensing Research Center, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China [2]Nansen-Zhu International research Center, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China [3]Graduate University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Chinese Science Bulletin》2010年第13期1311-1316,共6页

基　　金：supported by the knowledge Innovation Program of Chinese Academy of Sciences (Grant No. KZCX2-YW-205);National Basic Research Program of China (Grant No. 2005CB422205)

摘　　要：To examine the effect of pollution control measures on Beijing air quality during the 2008 Olympic Games, this paper analyzes the variation of aerosol extinction coefficient observed with a Dual-wavelength Polarized Lidar in Beijing during the Olympic Games. The results show that (1) during the Beijing Olympic Games, the aerosol extinction coefficient decreased to about 42.3% in the surface layer (below 250 m) compared with that in 2007 under almost the same meteorological conditions, indicating the effectiveness of local air pollution control measures in Beijing areas; (2) the analysis of the aerosol extinction coefficient obtained before (Jul. 20–Aug. 7, 2008) and during the Beijing Olympic Games (Aug. 8–Aug. 24, 2008) shows a maximum decrease of daily aerosol extinction coefficient in layer of 0.5-1.5 km. To elucidate such a phenomenon, the transport of PM10 from surrounding areas to Beijing was simulated by NAQPMS (the Nested Air Quality Prediction Modeling System) during Jul. 20 to Aug. 24, 2008. Analysis of PM10 transport from neighboring areas indicated a decrease of 36.6% during the Olympic Games. This demonstrated the efficiency of pollution control measures in surrounding areas in improving air quality in Beijing.To examine the effect of pollution control measures on Beijing air quality during the 2008 Olympic Games, this paper analyzes the variation of aerosol extinction coefficient observed with a Dual-wavelength Polarized Lidar in Beijing during the Olympic Games. The results show that （1） during the Beijing Olympic Games, the aerosol extinction coefficient decreased to about 42.3% in the surface layer （below 250 m） compared with that in 2007 under almost the same meteorological conditions, indicating the effectiveness of local air pollution control measures in Beijing areas; （2） the analysis of the aerosol extinction coefficient obtained before （Jul. 20-Aug. 7, 2008） and during the Beijing Olympic Games （Aug. 8-Aug. 24, 2008） shows a maximum decrease of daily aerosol extinction coefficient in layer of 0.5-1.5 km. To elucidate such a phenomenon, the transport of PM10 from surrounding areas to Beijing was simulated by NAQPMS （the Nested Air Quality Prediction Modeling System） during Jul. 20 to Aug. 24, 2008. Analysis of PM^0 transport from neighboring areas indicated a decrease of 36.6% during the Olympic Games. This demonstrated the efficiency of pollution control measures in surrounding areas in improving air quality in Beijing.

关 键 词：2008年北京奥运会 控制效果 空气污染 激光雷达 雷达数据 空气质量预报 2008年奥运会 消光系数 

分 类 号：X513[环境科学与工程—环境工程] TN958.98[电子电信—信号与信息处理]