介绍了多普勒激光雷达于2011年3月21日至4月19日期间在北京南郊进行的观测实验, 利用Fernald方法对气溶胶消光系数进行了反演和重点分析。结合同一时段探空气球得到的数据, 分析大气结构及其变化。观测数据表明:在晴朗无云并且大气较为清洁的条件下,气溶胶消光系数从低空向高空平缓递减； 遇到多云天气,气溶胶消光系数会在云层处增大;另外,低空的气溶胶消光系数有较明显的日变化特征, 早上相较于晚上要低些。实验期间,地面至10 km的气溶胶平均光学厚度在0.52。

Doppler lidar observation carried out in the southern suburbs of Beijing from March 21, to April 19, 2011, was presented focusing on analysis of the aerosol extinction coefficient retrieved by the Fernald method. Combined with data obtained by the radiosonde at the same period, it illustrates the characteristics and changes of aerosols in the boundary layer and lower stratosphere. Observational data indicates that in the cloudless and clear day, aerosol extinction coefficient descends gradually from low to high altitude. In cloudy weather, aerosol extinction coefficient increases at the cloud layer. In addition, the low-altitude aerosol extinction coefficient has apparent diurnal variation characteristics that aerosol extinction coefficient in the morning is lower than that of evening. During the experiment, the mean optical thickness from the ground to 10 km is 0.52.