Study on phase function in Monte Carlo transmission characteristics of poly-disperse aerosol

Bai Lu; Zhen-sen Wu; Shuang-qing Tang; Ming Li; Pin-hua Xie; Shi-mei Wang

doi:10.1117/1.3530109

1 January 2011 Study on phase function in Monte Carlo transmission characteristics of poly-disperse aerosol

Bai Lu, Zhen-sen Wu, Shuang-qing Tang, Ming Li, Pin-hua Xie, Shi-mei Wang

Author Affiliations +

Optical Engineering, Vol. 50, Issue 1, 016002 (January 2011). https://doi.org/10.1117/1.3530109

Abstract

Henyey-Greenstein (H-G) phase function is typically used as an approximation to Mie phase function and its shortcomings have been discussed in numerous papers. But the judicious criterion of when the H-G phase function would be valid is still ambiguous. In this paper, we use the direct sample phase function method in transmittance calculation. A comparison of the direct sample phase function method and the H-G phase function is presented. The percentage of the multiple scattering in Monte Carlo transfer computations is discussed. Numerical results showed that using H-G phase function led to underestimating the transmittance. The deflection of root means square error can be used as a criterion. Although the exact calculation of sample phase function requires slightly more computation time, the rigorous phase function simulation method has an important role in the Monte Carlo radiative transfer computation problems.

©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Bai Lu, Zhen-sen Wu, Shuang-qing Tang, Ming Li, Pin-hua Xie, and Shi-mei Wang "Study on phase function in Monte Carlo transmission characteristics of poly-disperse aerosol," Optical Engineering 50(1), 016002 (1 January 2011). https://doi.org/10.1117/1.3530109

Published: 1 January 2011

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