【摘要】 利用太阳—大气紫外光谱辐射计 (SAUVS),测量到达北京地表的太阳直接和散射紫外光谱辐射,给出反演大气气溶胶光学厚度的一种方法。结果表明:在紫外波段,大气气溶胶的光学厚度随波长的增加而单调减小,用指数函数可以很好地拟合反演结果。统计得到了 3个水平能见度状况下拟合函数的系数值,与全球气溶胶监测网络(AERONET)北京站的资料对比,表明反演结果基本合理。更多还原

【Abstract】 Based on the direct and scattering irradiance spectra measurements of ultraviolet waveband arrived at Beijing ground surface by the Sun-Atmosphere Ultraviolet Spectrum Radiometer (SAUVS),a method for retrieving the atmospheric aerosols optical depth (AOD) is given in this paper.Results show that the AOD of ultraviolet waveband decreases monotonously with increasing wavelength,and the retrieved results can be well fitted with an exponential function,and coefficients and expressions of fitting functions in three visiblities are determined statistically.At last,comparing the retrieved results with the survey data from the AERONET Beijing station suggests that the retrieval is reasonable.更多还原