Abstract
The transfer of polarized radiation in a medium containing size‐shape distributions of randomly oriented nonspherical particles is modeled by employing a prolate spheroidal particle model. The parameter characterizing the mean departure from sphericity of the shape‐distribution is the effective aspect ratio of the particle ensemble. The radiance, the degree of linear polarization and the degree of circular polarization are strongly sensitive to a variation of the effective aspect ratio. This shape‐sensitivity is observed consistently from size‐shape distributions containing mainly moderately aspherical particles to those containing predominantly highly aspherical particles. When the effective aspect ratio varies between 4 and 12, the degree of linear polarization changes by as much as 0.15. At certain angles from the sun, the radiance changes by as much as 60% within the same range of effective aspect ratios.
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