Microwave scattering matrices for ice crystals of cirrus clouds calculated with the discrete dipole approximation (DDA)

Angular distributions of intensity of microwave radiation scattered by ice crystals of cirrus clouds are calculated with the discrete dipole approximation. The wavelength of the incident radiation is chosen as 3.2 mm and the ice crystals are the hexagonal plates and columns with both regular and irregular shapes with particle sizes up to 20 mm. The cases of both fixed and random particle orientations are considered.