Development of the ice crystal scattering database for GCOM-C/SGLI

Calculation of scattering and absorption properties of ice crystals are important for understanding of radiative transfer in cirrus clouds and the radiation budget of the earth atmospheric system. In this study, parameterization of the single-scattering properties for individual ice crystal of cirrus clouds are investigated using Geometrical-Optics Approximation (GOA) and Surface Integral Equations Method of Muller-type (SIEM/M) methods for developing ice crystal scattering database of Global Change Observation Mission (GCOM-C)/Second generation Global Imager (SGLI) satellite data. Wavelength origin design was used for the light scattering database. 19 channels of the SGLI are selected as 111 calculating point in the band width×1.5 area. Number of size parameter was 73 ranged from 0.1-1000. As a result, transmissivity in the inside of the band width×1.5 region is larger than 99.7%. Finally, phase function of GOA used in this study and conventional improved Geometrical-Optics Method (GOM2) methods were compared and confirmed that phase functions of both data are similar in general.