Моделирование рассеяния света на атмосферных ледяных кристаллах сложной формы

Abstract

In the present paper the algorithm of light scattering simulation for irregular ice crystals that are typical for cirrus clouds is presented. It is based on the beam-splitting algorithm that was developed in IAO SB RAS. The algorithm transforms incident light field into scattered field. The previous algorithm is applicable for regular crystals such as hexagonal columns and plates but the new one treats hollow-columns, bullet-rosettes, aggregates etc. For implementation of the developed algorithm the program that calculates light scattering matrix for predefined crystals was created. The program works within the geometrical and physical optics approximations. The results of test calculations were compared with calculations of the program that implemented the well-known ray-tracing algorithm and show sufficient agreement.