微脉冲激光雷达(MPL)是探测大气气溶胶和云的有效工具。为了解气溶胶和污染物在城市近地面范围内的水平分布情况，使用自行研制的MPL开展了气溶胶和污染物水平分布的探测研究。对实测的水平数据，尝试采用分段斜率法和Fernald方法计算气溶胶和污染物消光系数的水平分布。研究表明，运用分段斜率法和Fernald法计算MPL水平数据均是可行的。

Micro pulse lidar(MPL) is an effective tool for detecting atmospheric aerosol and cloud. To find out the situation in urban subaerial range, the horizontal distribution of atmospheric aerosol and pollutant is presented with MPL developed by us. Two methods, subsection slope approach and Fernald method, are used to reverse atmospheric aerosol and pollutant horizontal extinction coefficient distribution. Results show that it is feasible to calculate horizontal data of MPL by subsection slope approach and Fernald method.