Transformation of stratospheric aerosol microstructure from two-wavelength polarization lidar data

As a result of the volcano eruptions, an enormous amount of matter in gaseous and aerosol phases is ejected into the atmosphere. Changes in the stratospheric aerosol layer (SAL) parameters are an important factor that affects radiation processes in the atmosphere and ozone layer transformations. The monitoring of SAL parameters´ changes after Mt. Pinatubo eruption has been carried out at the stationary lidar station of the Stepanov Institute of Physics, Belarus National Academy of Sciences (Minsk, 53.85°N, 27.5°E). The stratospheric laser sounding was performed at the wavelengths of 532 and 1064 nm. The depolarization degree of reflected signals was measured at the wavelength of 532 nm. The combined observations performed have enabled The authors to obtain data on changes in the microstructure of stratospheric aerosols during their transformations to the background state