Characteristics of distribution and seasonal variation of aerosol optical depth in eastern China with MODIS products  

作　　者：LIChengcai MAOJietait LAUKai-HonAlexis CHENJay-Chung YUANZibing LIUXiaoyang ZHUAihua LIUGuiqing 

机构地区：[1]DepartmentofAtmosphericScience,SchoolofPhysics,PekingUni-versity,Beijing100871,China [2]CenterforCoastalandAtmosphericResearch,TheHongKongUniversityofScienceandTechnology(HKUST),HongKong,China [3]Atmospheric,MarineandCoastalEnvironment(AMCE)Program,HKUST,HongKong,China

出　　处：《Chinese Science Bulletin》2003年第22期2488-2495,共8页

基　　金：supported by the grant NSFC/HKUST36 and the National Natural Science Foundation of China(Grant No.1999045700).

摘　　要：The accuracy of MODIS aerosol products from the NASA Terra Satellite is validated in comparison with the results of sun-photometer observations in Beijing and Hong Kong. By analyzing the MODIS aerosol products within the period of August 2000 to April 2003, it is believed that human activities are the main source of aerosols in the eastern part of China. This is based on the facts that all areas with relatively high values are consistent with regions of dense population and fast economic development, such as the North China Plain, the Sichuan Basin and the Pearl River Delta. It is also supported by the distribution of 舗gstr鰉 exponents showing that most aerosols in the eastern part of China are closely related to human activities, excepting the strong sandstorm episodes occurring in spring, fall and winter. In contrast to developed countries, the 舗gstr鰉 exponent of urban area in China is lower than its surroundings, indicating that the contribution of local floating dust and soot attributed to human activities is significant. Results presented in this paper provide important data for further research on climatic change and environmental study.The accuracy of MODIS aerosol products from the NASA Terra Satellite is validated in comparison with the results of sun-photometer observations in Beijing and Hong Kong. By analyzing the MODIS aerosol products within the period of August 2000 to April 2003, it is believed that human activities are the main source of aerosols in the eastern part of China. This is based on the facts that all areas with relatively high values are consistent with regions of dense population and fast economic development, such as the North China Plain, the Sichuan Basin and the Pearl River Delta. It is also supported by the distribution of 舗gstr鰉 exponents showing that most aerosols in the eastern part of China are closely related to human activities, excepting the strong sandstorm episodes occurring in spring, fall and winter. In contrast to developed countries, the 舗gstr鰉 exponent of urban area in China is lower than its surroundings, indicating that the contribution of local floating dust and soot attributed to human activities is significant. Results presented in this paper provide important data for further research on climatic change and environmental study.

关 键 词：中国 东部地区 沙暴 大气浮质 气候变化 浮质光学深度 

分 类 号：P425.55[天文地球—大气科学及气象学]