Abstract
In this study, the grid system of the complex refractive index in the 1.6-μm (SW3) channel of the Global Change Observation Mission (GCOM-C)/Second Generation Global Imager (SGLI) satellite sensor is investigated. This grid system is separated into twelve patterns according to the step size of the real and imaginary parts of the refractive index. Specifically, the Light Scattering solver Applicable to particles of arbitrary Shape (LISAS)/Geometrical-Optics Approximation (GOA) technique is used to simulate the scattering of light by randomly oriented large hexagonal ice crystals. The difference of radiance with refractive index step size is calculated from developed light scattering database using the radiative transfer (R-STAR) solver. The results indicated that the step size of the real part is a significant factor in the difference of radiance.
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