Vol. 13, issue 05, article # 17

Abstract:

The review of results of investigations of the optical properties of non-spherical and vibrating rain droplets is presented. The effect of anomalously high modulation of light scattered by a vibrating droplet is observed under laboratory conditions and is confirmed by calculations of the scattering phase functions. Photodetection of the tracks of the anomalously high modulation formed by falling rain droplets made it possible to obtain the data on the size, shape, mode and amplitude of vibration of each observed droplet. Two analytical solutions are proposed based on the statistical processing of more than 100 tracks: for the dependence of the mean amplitude of vibration on the droplet size and for the mean shape of falling rain droplets.