| A general purpose exact Rayleigh scattering look-up table for ocean color remote sensing |
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| 作者姓名： | HE Xianqiang PAN Delu BAI Yan GONG Fang |
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| 作者单位： | HE Xianqiang1，2，3*，PAN Delu1，2，BAI Yan1，2，3，GONG Fang1，21. Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration，Hangzhou 310012，China 2. Second Institute of Oceanography，State Oceanic Administration，Hangzhou 310012，China 3. Shanghai Institute of Technical Physics，Chinese Academy of Sciences，Shanghai 200083，China |
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| 摘 要： | 1 Introduction In the total radiance received by an ocean color remote sensor, over 80% radiance is the contribution being scattered by air molecule and aerosol, and a wa- ter-leaving radiance carrying the ocean color informa- tion is only a small part. T…
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| 关 键 词： | 海洋 色彩 辐射转移 遥感技术 水色透明度 |
| 收稿时间： | 2005-09-01 |
| 修稿时间： | 2005-12-07 |
A general purpose exact Rayleigh scattering look-up table for ocean color remote sensing |
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| HE Xianqiang,PAN Delu,BAI Yan,GONG Fang.A general purpose exact Rayleigh scattering look-up table for ocean color remote sensing[J].Acta Oceanologica Sinica,2006,25(1):48-56. |
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| Authors: | HE Xianqiang PAN Delu BAI Yan and GONG Fang |
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| Institution: | Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China;Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China |
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| Abstract: | The current exact Rayleigh scattering calculation of ocean color remote sensing uses the look-up table (LUT), which is usually created for a special remote sensor and cannot be applied to other sensors. For practical application, a general purpose Rayleigh scattering LUT which can be applied to all ocean color remote sensors is generated. An adding-doubling method to solve the vector radiative transfer equation in the plane-parallel atmosphere is deduced in detail. Compared with the exact Rayleigh scattering radiance derived from the MODIS exact Rayleigh scattering LUT, it is proved that the relative error of Rayleigh scattering calculation with the adding-doubling method is less than 0.25%, which meets the required accuracy of the atmospheric correction of ocean color remote sensing. Therefore, the adding-doubling method can be used to generate the exact Rayleigh scattering LUT for the ocean color remote sensors. Finally, the general purpose exact Rayleigh scattering LUT is generated using the adding-doubling method. On the basis of the general purpose LUT, the calculated Rayleigh scattering radiance is tested by comparing with the LUTs of MODIS, SeaWiFS and the other ocean color sensors, showing that the relative errors are all less than 0.5%, and this general purpose LUT can be applied to all ocean color remote sensors. |
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| Keywords: | ocean color Rayleigh scattering look-up table radiative transfer adding-doubling method |
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