Dynamics of the optical parameters of the Pinatubo aerosol layer from spectral polarization lidar measurements
Résumé
The dynamics of the optical parameters of stratospheric aerosol produced by the Mt. Pinatubo eruption is given. Measurements were carried out using a two-wavelength lidar with operating wavelengths of 532 and 1064 nm. The processing procedure of the data obtained with two-wavelength polarization laser sounding is described. The aerosol backscattering coefficient and depolarization coefficient at a wavelength of 532 nm and the ratio of the backscattering coefficients taken at two wavelengths are given in the form of isolines in the height-time plane. Possible temporal transformations of stratospheric-aerosol microphysical characteristics governing variations in the optical parameters are discussed.