| 大气气溶胶光学厚度的卫星双通道遥感方法 |
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| 引用本文： | 刘广员,孙毅义.大气气溶胶光学厚度的卫星双通道遥感方法[J].南京气象学院学报,1998,21(3):321-327. |
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| 作者姓名： | 刘广员 孙毅义 |
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| 作者单位： | 南京大学大气科学系(刘广员)，烟台大学环境特性研究所(孙毅义) |
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| 摘 要： | 提出了一种在晴空条件下，均匀下垫面上利用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观测的反射率资料，遥感整层大气气溶胶光学厚度的双通道方法，该方法把气溶胶散射的波长关系加以推广，把近红外通道的光学厚度均值引入了可见通道，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，从而极大地提高了反演精度（〉９０％）。
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| 关 键 词： | 大气 气溶胶 光学厚度 卫星双通道 遥感 |
A DUAL-CHANNEL ALGORITHM FOR AEROSOL OPTICAL THICKNESS REMOTE SENSING WITH SATELLITE |
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| Liu Guangyuan.A DUAL-CHANNEL ALGORITHM FOR AEROSOL OPTICAL THICKNESS REMOTE SENSING WITH SATELLITE[J].Journal of Nanjing Institute of Meteorology,1998,21(3):321-327. |
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| Authors: | Liu Guangyuan |
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| Abstract: | A dual channel algorithm is developed to retrieve aerosol optical thickness of cloudless atmosphere over homogeneous underlying surface from the reflectivity data in VIS and NIR bands observed by AVHRR on board NOAA-14. The adoption of the relationship between the aerosol's scattering and wavelength in this algorithm offsets the error in the parameterization of atmospheric factors and underlying surface reflectance when a single channel is used. The significant advantage of the dual channel algorithm is that a retrieving accuracy greater than 90% has been achieved under the condition of homogeneous surface. |
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| Keywords: | aerosol optical thichness satellite remote sensing retrieving |
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