Plass G N, Kattawar G W
Appl Opt. 1969 Dec 1;8(12):2489-95. doi: 10.1364/AO.8.002489.
The polarization and radiance of the reflected and transmitted radiation is calculated for a continental haze model and for a nimbostratus cloud model. The complex part of the index of refraction n(2) is varied from 0 to 1 in the calculation. Various surface albedos and optical thicknesses for the haze and cloud are considered. The polarization is an especially sensitive function of these parameters. For a thin cloud the reflected polarization depends strongly on the surface albedo. Large polarizations often occur, even at large optical thicknesses, when the single scattering albedo is small, because of the small number of multiple scattered photons. The mean optical path, diffuse flux, and cloud albedo are also discussed.
针对大陆性霾模型和雨层云模型，计算了反射辐射和透射辐射的偏振度与辐射率。在计算中，折射率n(2)的复数部分从0变化到1。考虑了霾和云的各种地表反照率和光学厚度。偏振度是这些参数的一个特别敏感的函数。对于薄云，反射偏振度强烈依赖于地表反照率。当单次散射反照率较小时，即使在光学厚度较大时，由于多次散射光子数量较少，也常常会出现较大的偏振度。还讨论了平均光程、漫射通量和云反照率。
