This work presents the results of the study of microphysical characteristics of cirrus clouds by multiwavelength polarization lidar located in China (Hefei). Measurements were carried out from December 2010 to February 2013. In this paper, we consider only dependable characteristics of lidar signal, which is the linear depolarization ratio measured at a wavelength of 532 nm. In addition, the dependences of depolarization ratios on both the size parameter and the distribution of the distortion angle of ice crystals were calculated in this work for the first time. These results were used for retrieving, with some uncertainties, the microphysical parameters of cirrus clouds observed in Hefei within that time period.
polarization lidar, cirrus clouds, physical optics approximation, light scattering, ice crystals
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