Beijing Surface Uv Observation And Analysis Of Satellite Retrieval

First, based on some analyses on spectral irradiance measured with the Sun-Atmosphere Ultraviolet Spectrum Radiometer (SAUVS) developed by The Institute of Atmosphere Physics, Chinese Academy of Sciences, Beijing and the results calculated by means of radiative transfer models MODTRAN and UVSS, the influences of various primary factors affecting UV irradiance reaching the ground surface, such as solar zenith angle (SZA), ozone column amount and its vertical distribution, ground surface albedo, sea level, aerosol optical depth and cloud were evaluated. Then total amount and spectral analyses were made on the SAUVS data. At last, Beijing ground surface ultraviolet radiative flux was obtained using a new parameterization method for retrieving surface UVB irradiance and erythemal UVB dose rate bringing forward by Wang Pucai using the EP/TOMS level 2 data. The results showed: different contributing factors have different degree of influences on the UVB reached at ground and the above satellite algorithm is available to calculate the Beijing ground surface UVB.