Beijing Fine Dust Weather Aerosol Optical Properties Retrieval And Analysis

Based on the spectral irradiance measured with the Sun-Atmosphere Ultraviolet Spectrum Radiometer (SAUVS) developed by the Institute of Atmosphere Physics and the Changchun Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Measuring the direct and scatter irradiance spectrum of ultraviolet waveband which arrives in Beijing global surface, Giving a method of retrieving the Aerosol Optical Depth(AOD) and put up with primary results that exponential function can fit the retrieval results according to its visibility , Putting forth different coefficients and functions on variable visibility ,also giving a primary analysis on the AOD in dust-storm day and some contrast between sun-day and dust-storm day ,analyzing the ratio between scatter and total irradiance ,and its relationship with Atmosphere Mass and Total Atmosphere Optical Depth, lastly Contrasting with the survey results by AERONET Beijing Station, the results of retrieval is in reason, This work gives some help in researching the co-effect of Aerosol-Radiance-Climate and makes preparation for further survey on the radiance characteristics of dust.