使用中国气象局南京综合观测基地的微脉冲偏振激光雷达(MPL)对南京北郊上空气溶胶进行观测，分析反演实测数据得到气溶胶的消光系数和退偏振比廓线，结果表明:晴天大气、雾霭大气和水相云中气溶胶的退偏振比数值相当，冰相云的退偏振比明显较前三种气溶胶大。2009 年1 月~6 月50 次实验观测数据的反演结果表明：当云底高度为4 km以下时，退偏振比数值集中在0~0.05 之间；当云底高度在4 km 以上时，退偏振比数值集中在0.05~0.15 之间，且云底越高，较大数值退偏振比出现的几率越高。对比2012 年一次夏季雾霭和一次冬季沙尘实测数据的反演结果表明：沙尘出现的边界特征明显，而雾的边界特征模糊；结合消光系数时空分布和退偏振比的变化，可以监测沙尘的爆发与消散。将MPL 结果与CE-318 太阳光度计数据进行对比，两种仪器所测气溶胶光学厚度随时间的变化趋势基本一致。

The aerosol measurement by micro-pulse lidar(MPL) system is taken in Nanjing Comprehensive Observation Base of China Meteorological Administration in the north suburb of Nanjing. The variation of aerosol extinction coefficient profiles and depolarization ratio profiles indicate that the depolarization ratio of aerosols in clear atmosphere, mist and water cloud have similar values, but the value of ice cloud depolarization ratio is larger than all of them. Nearly 50 times inversion results of experimental data during January to June in 2009 show that the depolarization ratio is concentrated between 0 to 0.05 when the height of cloud base is below 4 km. While the height is above 4 km, this value is almost between 0.05 to 0.15. The higher of height cloud base is, the higher of the probability of larger depolarization ratio values is appeared. Comparing the inversion results of summer mist and winter dust in 2012, the results show that dust appears obvious boundary, while the characteristics of mist boundary is blurred. Dust's outbreak and dissipate can be monitored by combining spatial distribution and temporal distribution of extinction coefficient with change of depolarization ratio. Comparing the results of MPL and CE-318 sun photometer, the optical thickness of both instruments measured is consistent with the trends of time.