Effect of minor deformation for the light scattering of ice and aerosol particles

Hiroshi Ishimoto; Takahisa Kobayashi

doi:10.1117/12.693811

8 December 2006 Effect of minor deformation for the light scattering of ice and aerosol particles

Proceedings Volume 6408, Remote Sensing of the Atmosphere and Clouds; 64081B (2006) https://doi.org/10.1117/12.693811
Event: SPIE Asia-Pacific Remote Sensing, 2006, Goa, India

Abstract

On the basis of the numerical results by using finite-difference time-domain (FDTD) methods, we discuss the light scattering and its dependence on the particles' physical properties, such as particle shape, surface roughness, and porosity. The FDTD calculations were conducted for single hexagonal columns and aggregates with size parameter up to 50 taking into account the particles' random orientation. The discussion includes the depolarization ratio as well as basic radiative transfer parameters: phase function, extinction efficiency and asymmetry factor. Results of our light-scattering calculations show that the simple deformation of the original shape alters the optical properties. Comparing with the shape effects, surface micro-roughness and porosity cause minor changes in some scattering parameters However, the micro-roughness makes the depolarization ratios increase as well as the irregular shaped aggregate particles.

Citation Download Citation

Hiroshi Ishimoto and Takahisa Kobayashi "Effect of minor deformation for the light scattering of ice and aerosol particles", Proc. SPIE 6408, Remote Sensing of the Atmosphere and Clouds, 64081B (8 December 2006); https://doi.org/10.1117/12.693811

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