The analysis of optical properties of arid aerosol of dust storm ("Afghan") on August 23-25, 2010 has been done according to the data of the AERONET automatic system. A correlation of temperature of a ground layer of atmosphere with optical thickness of aerosol of the dust storm is investigated, and it is found out that this dependence passes through a flat maximum and the smoothly decreases (anti-greenhouse effect).
dust aerosol, dust haze, optical thickness, air temperature