Engineering Physics Annotation << Back Calculation of impact of atmospheric aerosol on level of attenuation of Solar radiation in UV band R.T. Rajabli, A.Y. Mammadov The analytical formula for assessing of UV-B radiation attenuation caused with fine – and coarse disperse aerosol fractions is given. The transcendental equation for calculation of wavelength at which the levels of attenuation of UV-B radiation caused with fine and coarse fractions of aerosol are equal is derived. Key words: Aerosol, solar radiation, atmosphere, ultraviolet radiation. E-mail: rroya@yandex.ru.