The Effect of Cloud Scattering on the Absorption of Solar Radiation by Atmospheric Dust

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  • 1 Division of Atmospheric Physics, CSIRO, Sydney, Australia
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Abstract

When non-absorbing scatterers (e.g., cloud drops) are added in an absorbing layer (e.g., a dust layer), the optical paths of the radiation will be greatly changed if the scattering component is optically thick. The absorption will thus be altered. Results are given of numerical computations to determine the effect of non-absorbing cloud drops on the absorption of radiation by a dust layer. Absorption is found to be decreased for low angles of incidence and increased for higher angles of incidence.

Abstract

When non-absorbing scatterers (e.g., cloud drops) are added in an absorbing layer (e.g., a dust layer), the optical paths of the radiation will be greatly changed if the scattering component is optically thick. The absorption will thus be altered. Results are given of numerical computations to determine the effect of non-absorbing cloud drops on the absorption of radiation by a dust layer. Absorption is found to be decreased for low angles of incidence and increased for higher angles of incidence.

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