Theoretical Investigation of the Effects of Aerosol Characteristics on the Radiative Heat Transfer in the Atmospheric Boundary Layer

概要

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An analysis is carried out on the radiative heat transfer in a nonisothermal, nonhomogeneous atmospheric boundary layer. Nongray gases and atmospheric aerosols are considered to emit, absorb and anisotropically scatter radiation energy. The effect of size, optical constants and concentration of aerosols on heating rate are studied. Various conditions of the atmospheric layer are considered. The maximum effect of the aerosol diameter is found in the case of the diameter being nearly equal to the wavelength of the visible light. The effect of the imaginary part of the complex refractive index of aerosol on the heating rate is very large. A complex, large dependence of the heating rate on the humidity is recognized. When the urban atmosphere is treated, the influence of the aerosol on the radiative heat transfer is strong, and an inversion layer may be produced by the aerosol.
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