Henyey–Greenstein and Mie phase functions in Monte Carlo radiative transfer computations

摘要: Monte Carlo radiative transfer simulation of light scattering in planetary atmospheres is not a simple problem, especially the study of angular distribution of light intensity. Approximate phase functions such as Henyey–Greenstein, modified Henyey–Greenstein, or Legendre polynomial decomposition are often used to simulate the Mie phase function. An alternative solution using an exact calculation alleviates these approximations.