TY CONF TI ESTIMATION OF THE MAIN SIZE OF ATMOSPHERIC ICE CRYSTALS USING THE COLOR RATIO IN LASER SENSING APPLICATION KW lidar KW light scattering KW physical optics approximation JO The XXXI International Symposium "Atmospheric and Ocean Optics. Atmospheric Physics" AU Timofeev, D.N. AU Tkachev, I.V. AU Konoshonkin, A.V. AU Kustova, N.V. AU Shishko, V.A. PY 2025 PB V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences