Raman激光雷达探测气溶胶光学特性

介绍了武汉大学自行研制的Raman多通道激光雷达系统,给出了整个系统的设计原理及主要技术参量.详细描述了利用Raman激光雷达原理反演大气气溶胶消光系数、后向散射系数和激光雷达比等光学特性的方法,并对求解消光系数过程中的关键部分做了讨论分析.同时对武汉上空对流层低空大气气溶胶、云以及边界层等光学特性进行了实时探测反演.实验结果表明:该Raman多通道激光雷达系统在夜晚对低空气溶胶的垂直分布特性具有较好的探测能力,工作性能可靠.

Measurements of Aerosol Optical Properties by Raman Lidar

The Raman multi-channels lidar developed by Wuhan University is described.The design principles of the whole system and main technical parameters are provided.The methods for retrieving aerosols’ optical properties such as atmospheric aerosol extinction coefficient,backscattering coefficient and lidar ratio are presented in detail,and the key part of retrieving the aerosol extinction coefficient is discussed and analyzed.The real-time detections of optical properties for aerosol,cloud and boundary layer in the low-altitude atmosphere are done.The experiments show that the multi-channels Raman lidar system has good performance for detecting the vertical distribution of aerosols in the night and it is reliable.