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Change of NO_2 column density over Beijing from satellite measurement during the Beijing 2008 Olympic Games

查看全文 作　　者：YU [1,2]Huan;WANG [1]PuCai;ZONG [1]XueMei;LI [3]Xin;LU [1]DaRen 高影响力作者 机构地区：[1]LAGEO, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China;[2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China;[3]Beijing Municipal Environmental Protection Bureau, Beijing 100044, China高影响力机构 出　　处：《Chinese Science Bulletin》索引2010年第55卷第3期,共6页高影响力期刊 基　　金：supported by the funds of Beijing Municipal Science and Technol-ogy Commission (Grant No. Z005190042791);National Natural Science Foundation of China (Grant No. 40875084);National Basic Research Pro-gram of China (Grant No. 2006CB403702);EU PF6 AMFIC Project 摘　　要：The effect of the air quality ensuring measures for the Beijing 2008 Olympic Games in reducing air pollution during the game period is assessed using the tropospheric NO2 column density retrieved from Ozone Monitoring Instrument onboard AURA satel- lite. The basic method of the assessment is the comparison of the NO2 column densities during the game period with that during the corresponding period of 2005?2007 for the Beijing area, and the comparison among Beijing and neighbouring cities Tianjin and Tangshan, which are of similar situation in air pollution of NO2 in recent years. The images of tropospheric NO2 column den- sities over Northern China during the Beijing 2008 Olympic Games show the remarkable effect of the air quality ensuring meas- ures in reducing NO2 pollution: the tropospheric NO2 column density in Beijing is much lower than that in Tianjin and Tangshan, while there were very similar values in the three large cities during the same period of the last three years. About 40% reduction in tropospheric NO2 column density over the Beijing area is obtained from the assessment during July to August, 2008, a key period of air quality ensuring measures for the Beijing 2008 Olympic Games. 关 键 词：北京2008年奥运会 二氧化氮 柱密度 卫星测量 空气污染 游戏质量 北京地区 对流层
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