Numerical solution of Maxwell equations for definition of scattering indicatrixes of light by ice crystals

The algorithm of numerical solution of Maxwell equations with application of the method of weighed residuals is developed. Effective program realization with use the finite-elements approximation is considered. The numerical solution of Maxwell equations is used for scattering indicatrixes of light by nonspherical particles of crystal clouds definition. The scattering indicatrixes for particles having the shape of a hexagonal prism and droxtal, with the sizes exceeding a wave length of incident radiation greatly is considered.