Attenuation of radiation in the 8-13 micron window region by atmospheric aerosols

The attenuation of infrared radiation by different kinds of aerosols was calculated on the basis of size distribution measured in the real atmosphere and compared with results measured by solar spectrum. The physical characteristics of the aerosols and radiation attenuation under different atmospheric conditions were also analyzed. The results show that attenuation by atmospheric aerosols in the 8 to 13 micron window depends not only on the concentration and the size distribution but also on the chemical composition of the aerosols. Absorption by a polluted atmosphere is obviously different from that by a clean atmosphere.