Experimental research of stratocumulus cloudiness above city of Tomsk with changeable field-of-view lidar

摘要

The lidar experimental data recorded for dense stratocumulus clouds above Tomsk city are presented. The measurements were performed by a lidar with changeable field of view (FOV). New algorithms for resolving a lidar equation taking into account multiple scattering have been introduced to restore extinction coefficient profiles. These algorithms are based on the original description of a lidar signal including its asymptotic properties for large FOVs. In order to solve an inverse problem only one parameter, namely the effective particle size has to be set a priory. From experimental data inversion results it was established that extinction coefficient values in a cloud layer depth are close to the range of 30―40 km~(-1).