Analysis of the optical properties of aerosol components in typical environments based on OPAC
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摘要：
利用基于Mie散射理论的云和气溶胶粒子的光学特性软件(OPAC)在不同激光雷达探测波段对一般大陆(典型气溶胶组分:水溶性、不溶性和烟尘气溶胶)、沙漠(典型气溶胶组分:水溶性、核模态矿物、积聚模态矿物和粗模态矿物气溶胶)和洁净海洋(典型气溶胶组分:水溶性、积聚模态海盐和粗模态海盐)3种环境下的气溶胶光学参数(散射系数、光学厚度和激光雷达比)进行了仿真研究,分析了各环境中光学参数随气溶胶组分数浓度的变化规律以及各组分对光学特性的影响.结果表明消光系数和光学厚度在不同激光波段、不同环境下均随组分数浓度线性递增,在上述环境中对消光系数和光学厚度影响最大的组分依次为水溶性气溶胶、积聚模态矿物气溶胶和积聚模态海盐气溶胶.激光雷达比变化规律十分复杂,受探测波长及气溶胶组分的双重影响,一般大陆环境中非水溶性气溶胶在2个波段上的影响占主导地位;沙漠环境中,不同波段上积聚模态矿物气溶胶对激光雷达比的影响最大;洁净海洋环境中,积聚模态海盐气溶胶对激光雷达比的影响最强.
The optical properties of aerosol and cloud software package(OPAC)was used to study the effects of different lidar detection bands in three typical environments,which include continental average(typical aerosol components:water-soluble,insoluble and soot aerosols),desert(typical aerosol components:water-soluble,nuclear-mode minerals,accumulative mode minerals and coarse-mode minerals)and clean ocean(typical aerosol components:water-soluble,accumulated mode sea salt and coarse mode sea salt)under the Mie scattering theory.The variation of optical parameters with the concentration of components under each environment and the influence of each component on the optical properties were analyzed.The results showed that the extinction coefficient and optical thickness increased linearly with the concentration of the components at different laser bands and under different environments.The components that had the greatest influence on the extinction coefficient and optical thickness in the above environments were successively water-soluble aerosols,mineral aerosols of accumulation mode and sea salt aerosols of accumulation mode.The variation of the lidar ratio is very complex,which is affected by the dual influence of detection wavelength and aerosol component.In general,non-water-soluble aerosols under continental average environment has the greatest influence on the lidar ratio at 550nm and 1 000 nm.The minerals of accumulative mode in different wave bands has the greatest influence on the lidar ratio under desert environment.The sea salts of accumulative mode has the strongest influence on the lidar ratio under clean marine environment.
作者：
王金虎 张炎 陈钟荣 陈浩 金子琪 王靓 马晓峰
Wang Jinhu;Zhang Yan;Chen Zhongrong;Chen Hao;Jin Ziqi;Wang Liang;Ma Xiaofeng(Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science and Technology,Nanjing 210044,China;Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science and Technology,Nanjing 210044,China;National Demonstration Center for Experimental Atmospheric Science and Environmental Meteorology Education,Nanjing University of Information Science and Technology,Nanjing 210044,China;Key Laboratory of Middle Atmosphere and Global Environment Observation,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China)
机构地区：
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 南京信息工程大学中国气象局气溶胶与云降水重点开放实验室 南京信息工程大学大气科学与环境气象国家级实验教学示范中心 中国科学院中层大气和全球环境探测重点实验室
出处：
《betway官方app 学报：自然科学版》 CAS 北大核心 2019年第5期55-63,共9页
基金：
国家自然科学基金(61372066 61672149 41075025) 2017年度江苏省自然科学基金项目(BK20170945) 中国博士后科学基金第63批面上资助(2018M631554) 2016年南京信息工程大学人才启动经费资助项目(2016r028) 2018年江苏省研究生实践创新计划资助(SJCX18_0322) 南京信息工程大学大学生创业训练计划项目(201810300105T 201910300152E)
关键词：
消光系数 光学厚度 激光雷达比 MIE散射 OPAC软件包
extinction coefficient optical thickness lidar ratio Mie scattering theory OPAC software package
分类号：
P407.5 [天文地球—大气科学及气象学]
