Approximations of the Scattering Phase Functions of Particles

• Published in: Advances in atmospheric sciences Vol. 23; no. 5; pp. 802 - 808
• Main Author: 赵剑琦 石广玉 车慧正 程光光
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Nature B.V 01.09.2006; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; Key Laboratory for Atmospheric Chemistry of CMA, Chinese Academy of Meteorolo%State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029%Key Laboratory for Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing 100081
• Subjects: Emissions; Mathematical analysis; Radiative transfer; Studies; 剪刀撑; 微粒物; phase function; particles; small light scattering; bridging technique
• ISSN: 0256-1530; 1861-9533
• DOI: 10.1007/s00376-006-0802-y

Based on anomalous diffraction theory and the modified Rayleigh-Debye approximation, a physically realistic model in bridging form is described to approximate the scattering phase function of particles. When compared with the exact method, the bridging technique reported here provides a reasonable approximation to the Mie results over a broader range of angles and size parameters, and it demonstrates the advantage of being computationally economic. In addition, the new phase function model can be essentially extended to other shapes and conveniently used in more complicated scattering and emission problems related to the solutions of the radiative transfer equations.