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ABSTRACT

Mishchenko et al. 2004

Mishchenko, M.I., L. Liu, L.D. Travis, and A.A. Lacis, 2004: Scattering and radiative properties of semi-external versus external mixtures of different aerosol types. J. Quant. Spectrosc. Radiat. Transfer, 88, 139-147, doi:10.1016/j.jqsrt.2003.12.032.

The superposition T-matrix method is used to compute the scattering of unpolarized light by semi-external aerosol mixtures in the form of polydisperse, randomly oriented two-particle clusters with touching components. The results are compared with those for composition-equivalent external aerosol mixtures, in which the components are widely separated and scatter light in isolation from each other. It is concluded that aggregation is likely to have a relatively weak effect on scattering and radiative properties of multi-component tropospheric aerosols and can be replaced by the much simpler external-mixture model in remote sensing studies and atmospheric radiation balance computations.

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