机载激光雷达探测京津冀地区气溶胶的空间分布  

Observational Study of Aerosol Distribution over Jing-Jin-Ji Area Using Airborne Lidar

作　　者：伯广宇[1] 谢晨波[1] 王邦新[1] 吴德成[1] 钟志庆[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所大气成分与光学重点实验室,安徽合肥230031

出　　处：《光学学报》2015年第9期43-49,共7页Acta Optica Sinica

基　　金：国家自然科学基金(41205019);国家973计划(2010CB950800);公益性行业(气象)科研专项(GYHY201206037-09;GYHY201106002-03)

摘　　要：利用一台研制的机载双波长米氏散射激光雷达,对京津冀地区大气气溶胶的三维空间分布进行了探测。给出了其中一次较典型的观测实验,该架次航线与边界层内的气流方向垂直,有利于获取区域尺度上气溶胶分布的剖面信息。观测结果显示,京津冀腹地密集的污染排放源,结合气流对气溶胶的输送和扩散作用,导致观测期间该地区形成了大范围区域立体污染。通过分析典型污染源周边的气溶胶分布,研究了重污染源排放的气溶胶随气流扩散的过程。初步的飞行实验结果表明,该激光雷达性能稳定,可以为污染源的识别以及污染物传输路径的探测提供高空间分辨率的数据。An airborne two-wavelength polarization Mie lidar is designed for detecting three-dimensional （3-D） distributions of atmospheric aerosols at Jing-Jin-Ji area. One typical field campaign is described. The flight path is perpendicular to the airstreams, which makes it ideal for observation of aerosol 3-D structure on the flight path. The observation result of the aerosol distribution during the flight shows that regional threedimensional air pollution has formed around Jing-Jin-Ji area, due to densely pollutant source and air-flow diffusion. The diffusion process of the aerosol emission from one typical heavy pollution source is given using the aerosol distribution data around it. The preliminary result shows that this airborne lidar provides a unique airborne remote sensing platform for monitoring the aerosol distribution over a wide region.

关 键 词：大气光学 气溶胶 航空遥感 激光雷达 空间分布 光学参数 

分 类 号：TN958.98[电子电信—信号与信息处理]