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Proceedings Paper

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

Paper Details

Date Published: 8 December 2006
PDF: 9 pages
Proc. SPIE 6408, Remote Sensing of the Atmosphere and Clouds, 64081B (8 December 2006); doi: 10.1117/12.693811
Show Author Affiliations
Hiroshi Ishimoto, Meteorological Research Institute (Japan)
Takahisa Kobayashi, Meteorological Research Institute (Japan)

Published in SPIE Proceedings Vol. 6408:
Remote Sensing of the Atmosphere and Clouds
Si-Chee Tsay; Teruyuki Nakajima; Ramesh P. Singh; R. Sridharan, Editor(s)

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