An evaluation of chemical and size effects on radiative properties of multi-component aerosols

Yu, Shaocai; Saxena, V. K.; Wenny, B. N.
August 2000
AIP Conference Proceedings;2000, Vol. 534 Issue 1, p608
Academic Journal
The sensitivity of aerosol radiative properties and radiation transmission to aerosol composition, size distribution, relative humidity (RH) is examined in this paper. Mie calculation and a tropospheric visible radiation model are used. The partial molar refraction method and the volume-average method were used to calculate the real and imaginary components of the refractive index of real aerosols respectively. The sensitivity test shows that both the extinction coefficient and asymmetry factor increase by ∼48% with the real component varying from 1.40 to 1.65., and the single scattering albedo decreases 24% with the imaginary component varying from -0.005 to -0.1. Both aerosol radiative properties and radiation transmission are very sensitive to the change in geometric mean radius and geometric standard deviation.


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