| Atmospheric correction of SeaWiFS imagery for turbid coastal and inland waters |
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| 作者姓名： | HE Xianqiang PAN Delu MAO Zhihua |
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| 作者单位： | KeyLaboratoryofOceanDynamicProcessesandSatelliteOceanographyofStateOceanicAdministration,Hangzhou310012,China／／SecondInstituteofOceanography,StateOceanicAdministration,Hangzhou310012,China |
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| 基金项目： | 国家高技术研究发展计划(863计划)，Thank the National Satellite Ocean Application Service (NSOAS) for providing the in-situ data |
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| 摘 要： | A practical algorithm of atmospheric correction for turbid coastal and inland waters is provided. The present algorithm uses the property that the water-leaving radiance at 412 nm increases very tittle with the increasing of water turbidity. Thus, in very turbid coastal and inland waters, the radiance at 412 nm can be used to estimate the aerosol scattering radiance at 865 nm. The performance of the new algorithm is validated with simulation for several cases. It is found that the retrieved remotely sensed reflectance is usually with error less than 10% for the first six bands of SeaWiFS. This new algorithm is also tested under various atmospheric conditions in the Changjiang River Estuary and the Hangzhou Bay where the sediment concentration is very high and the standard SeaWiFS atmospheric correction algorithm creates a mask due to atmospheric correction failure. The result proves the efficiency of this simple algorithm in reducing the errors of the water-leaving radiance retrieving using SeaWiFS satellite data.
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| 关 键 词： | 大气修正 海洋水质 海岸混浊 WiFS算法 浮质散射辐射率 |
| 收稿时间： | 2004/1/11 0:00:00 |
| 修稿时间： | 2004/6/20 0:00:00 |
Atmospheric correction of SeaWiFS imagery for turbid coastal and inland waters |
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| HE Xianqiang,PAN Delu,MAO Zhihua.Atmospheric correction of SeaWiFS imagery for turbid coastal and inland waters[J].Acta Oceanologica Sinica,2004,23(4):609-615. |
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| Authors: | HE Xianqiang PAN Delu and MAO Zhihua |
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| Institution: | 1. 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, Ch
2. 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: | A practical algorithm of atmospheric correction for turbid coastal and inland waters is provided. The presentalgorithm uses the property that the water-leaving radiance at 412 nm increases very little with the increasing of waterturbidity. Thus, in very turbid coastal and inland waters, the radiance at 412 nm can be used to estimate the aerosolscattering radiance at 865 nm. The performance of the new algorithm is validated with simulation for several cases. Itis found that the retrieved remotely sensed reflectance is usually with error less than 10% for the first six bands ofSeaWiFS. This new algorithm is also tested under various atmospheric conditions in the Changjiang River Estuaryand the Hangzhou Bay where the sediment concentration is very high and the standard SeaWiFS atmosphericcorrection algorithm creates a mask due to atmospheric correction failure. The result proves the efficiency of thissimple algorithm in reducing the errors of the water-leaving radiance retrieving using SeaWiFS satellite data. |
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| Keywords: | atmospheric correction SeaWiFS Case II waters |
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