Scandinavian Polar Stratospheric Clouds aerosol Characteristics retrieved from lidar data

This paper is based on the analysis and the interpretation of groundbased lidar and ballonborne laser backscatter sonde measurements of Polar Stratosperic Clouds. A classification of the clouds will be made on the basis of the measured parameters. This classification is also reproduced by different temperatures and thermal histories of the sampled air masses. A Mie aerosol model is used to identify the physical meaning of the variation in the optical parameters for liquid particles. This model is also used for the retrieval of the size distribution of the aerosol. It will be compared with a different model, based on the color index computation and with particle counter measurements.