论文部分内容阅读
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。
Using a developed airborne dual-wavelength Mie scattering lidar, the 3D spatial distribution of atmospheric aerosols in the Beijing-Tianjin-Hebei region was probed. One of the more typical observations is given, which is perpendicular to the direction of the airflow in the boundary layer, which is useful for obtaining profile information of aerosol distribution on a regional scale. Observations show that intensive source of pollution in the hinterland of Beijing, Tianjin and Hebei, combined with the transport and diffusion of aerosols to aerosol, has led to the formation of large-scale regional three-dimensional pollution in the area during the observation period. By analyzing the distribution of aerosols around typical sources, the aerosol diffusion process with heavy pollutants was studied. The preliminary flight experiment results show that the laser radar has stable performance and can provide high spatial resolution data for the identification of pollution sources and the detection of pollutant transmission paths.