【摘要】 提出了基于中分辨率成像光谱仪(MODIS)数据反演近海污染大气气溶胶光学性质的算法。根据近海污染大气气溶胶的成分特征构建了新的气溶胶模式;同时避开了MODIS反演算法中计算大气顶光谱反射率理论的缺陷;利用近红外光谱数据降低了近岸二类水体离水辐射的影响,并通过光谱匹配技术实现了近海污染大气气溶胶光学性质的反演。利用气溶胶自动观测网(AERONET)的近海站点数据对算法进行了验证。结果表明,超过2/3的反演结果落在误差范围内,反演结果达到了大洋的反演精度。更多还原

【Abstract】 An algorithm for retrieving polluted coastal aerosol optical properties based on moderate resolution imaging spectrometer(MODIS) data is proposed.New aerosol modes are created based on the characteristics of coastal aerosols;the limitation of computing apparent reflectance in MODIS algorithm is removed;and by selecting infrared spectroscopy bands,water leaving radiance from case II water is reduced.Aerosol robotic network(AERONET) sites data are used to test the proposed algorithm,and the results show that more than two-thirds retrievals lie within the expected error bars.The retrieval meets the requirements of the ocean retrieval accuracy.更多还原