【摘要】 本文提出了一种利用NOAA-14极轨卫星甚高分辨率辐射计(AVHRR)可见光和近红外两个通道的反射率资料遥感晴空条件下、均匀下垫面上整层大气气溶胶光学厚度的双通道方法。该方法利用气溶胶散射的波长关系,把基于大气辐射传输方程近红外通道的光学厚度均值引入可见通道,使单个通道中地表反射率和大气因子参数化的误差得以抵消,极大地提高了遥感精度(>90％)。更多还原

【Abstract】 A two-channel algorithm is developed to retrieve aerosol optical thickness using data of AVHRR on board NOAA-14 for cloudless atmosphere over uniform underlying surface. With the relation of aerosol’s scattering on wave length, the offsetting of the error of the visible and the near-infrared bands from the parameterization of atmospheric factors and underlying surface reflectance in the mean-value method based on radiative transfer equation make this algorithm get the value of aerosol optical thickness with high precision (>90%)更多还原