在特定环境中气溶胶组分光学特性的分析  

The Analysis of the Optical Properties of Aerosol Components in Three Particular Environments

作　　者：王金虎[1,2,3,4] 金文雨 王宇豪 蔡嘉晗 谢槟泽 WANG Jinhu;JIN Wenyu;WANG Yuhao;CAI Jiahan;XIE Binze(Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science and Technology,Nanjing Jiangsu 210044,China;Key Open Laboratory of Aerosol and Cloud Precipitation,China Meteorological Administration,Nanjing Jiangsu 210044,China;Key Laboratory of Middle Atmosphere and Global Environment Observation,Chinese Academy of Sciences,Beijing 100029,China;Institute of Safety and Emergency Management,Nanjing University of Information Science and Technology,Nanjing Jiangsu 210044,China)

机构地区：[1]南京信息工程大学气象灾害预报预警与评估协同创新中心,江苏南京210044 [2]中国气象局气溶胶与云降水重点开放实验室,江苏南京210044 [3]中国科学院中层大气和全球环境探测重点实验室,北京100029 [4]南京信息工程大学安全应急管理研究院,江苏南京210044

出　　处：《江西师范大学学报（自然科学版）》2022年第5期481-488,共8页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(41905026),江苏省自然科学基金(BK20170945),南京信息工程大学人才启动基金(2016r028),中国博士后科学基金第63批面上课题(2018M631554);江苏省333工程高层次人才培养(第3层次)资助项目.

摘　　要：基于Mie散射的OPAC软件包,分析了在激光雷达探测气溶胶时的3种特定环境(大陆洁净、大陆污染、海上污染)下各种气溶胶组分对光学特性(消光系数、散射系数、吸收系数、激光雷达比)的影响,对比了在550、1000 nm这2个波长下的变化规律.研究结果表明:在550、1000 nm这2个波长下不同环境中气溶胶组分的消光系数、散射系数随水滴数浓度的增加均呈线性递增,大陆洁净型和大陆污染型气溶胶环境的吸收系数变化均比较缓慢.在海上污染型气溶胶环境中,当气溶胶组分为积聚模态海盐和粗模态海盐时,水滴数浓度的变化率为0,这表明在这2种气溶胶组分环境下,吸收系数不随水滴数浓度的变化而变化;激光雷达比受雷达波长和气溶胶环境组分2个因素的影响,该值在大陆污染型气溶胶环境下的变化最为明显,在水溶性和非水溶性组分下大幅递减,而在煤烟组分下大幅递增.Based on the OPAC software package of Mie scattering,the effects of various aerosol components on optical properties(extinction coefficient,scattering coefficient,absorption coefficient and lidar ratio)are analyzed when lidar detects aerosols in three specific environments(continental clean,continental polluted and maritime polluted).And the changing regular under the two wavelengths(550 nm,1000 nm)are further compared.The results show that the extinction coefficients and scattering coefficients of aerosol components in different environments at two wavelengths increase linearly with the increase of number concentration,and the absorption coefficients of the continental clean and continental polluted aerosol environments change slowly.In the maritime polluted aerosol environment,when the aerosol components are the accumulation mode sea salt and the coarse mode sea salt,the change rate of the water droplet number concentration is zero,which shows that the absorption coefficient doesn′t change with the water droplet in the environment of the two aerosol components.The lidar ratio is affected by two factors(the wavelength of the radar and the composition of the aerosol environment),the lidar ratio changes obviously in the continental polluted aerosol environment.The ratio is greatly increased under the soot component.

关 键 词：MIE散射 OPAC软件包 气溶胶 光学特性 

分 类 号：P407.5[天文地球—大气科学及气象学]