激光雷达探测的大气气溶胶空间二维分布

Two-dimensional distribution of aerosol measured by lidar

提出了通过改变激光束仰角的斜程探测得到气溶胶空间二维分布的方案。利用自行研制的Mie散射激光雷达系统对合肥西郊上空的大气气溶胶进行了连续的斜程探测,并通过相应的数据处理方法,得到气溶胶消光系数二维分布图及其随时间的演变图。给出了2005年12月2日的典型探测结果,这些结果不仅全面直观地反映了大气空间某一纵向剖面的气溶胶消光系数分布情况,而且清楚地显示了这一分布随时间的整体变化趋势,这对于实时的大气环境监测具有重要意义。

A scheme of two-dimensional space distribution of aerosol is put forward, which obtained from slant-range-detection by changing the laser＇s elevation angle. Atmospheric aerosol extinction coefficient at west suburb of Hefei was continuously measured with a Mie scattering lidar system developed by ourselves .Some two-dimensional distributions of aerosol＇ extinction coefficient and their evolving figures were obtained by corresponding data processing means. The classical measurement results of Dec 2, 2005 are given. The results not only roundly reflect the distribution of aerosol＇ extinction coefficient of some longitudinal cross section in atmosphere space, but also obviously display the integral changing tendency of this distribution. And it will be significant for real-time monitoring of atmospheric environment in future.