Experimental Study on Optical Absorption Properties of Atmospheric Aerosol in China Area

The optical absorption coefficient and mass of atmospheric aerosol were measured by experiment at different relative humidities.The visible radiation absorption coefficients of aerosol and single source were also studied.Optical refraction index imaginary unit was analyzed.The results showed that relative humidity had obvious effect on visible radiation absorption of aerosol.Optical absorption coefficient and optical refraction index imaginary unit declined from northwest to southeast,which were higher in the north and lower in the south,the highest in northern heavy industrial cities and the lowest in Xishuangbanna,southern China.