Validation of a vector version of the 6S radiative transfer code for atmospheric correction of satellite data. Part II. Homogeneous Lambertian and anisotropic surfaces
Validation of a vector version of the 6S radiative transfer code for atmospheric correction of satellite data. Part II. Homogeneous Lambertian and anisotropic surfaces
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DOI：
10.1364/ao.46.004455
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发表时间：
2007-07-10
期刊：
影响因子：
1.9
通讯作者：
Vermote, Eric F.
中科院分区：
文献类型：
--
作者：
Kotchenova, Svetlana Y.;Vermote, Eric F.
这是最近开发的6S（太阳光谱中卫星信号的第二次模拟）辐射传输代码（6SV 1）的矢量版本的验证工作的第二部分，主要用于计算中分辨率成像光谱仪（MODIS）大气校正算法中的查找表。6SV 1代码进行了测试，对Monte Carlo代码和Coulson的表列值的分子和气溶胶的气氛所界定的不同朗伯和各向异性表面。该代码还在标量模式下与标量代码SHARM进行了测试，以解决先前在各向异性表面情况下的6S精度问题。所有测试用例的特征在于6SV 1和其他代码之间的良好一致性：总体相对误差不超过0.8%。研究还表明，忽略大气中辐射偏振的影响会导致模拟的大气层顶反射率产生很大的误差：朗伯表面和各向异性表面的最大观测误差约为7.2%。(C)2007年，美国光学学会。
This is the second part of the validation effort of the recently developed vector version of the 6S (Second Simulation of a Satellite Signal in the Solar Spectrum) radiative transfer code (6SV1), primarily used for the calculation of look-up tables in the Moderate Resolution Imaging Spectroradiometer (MODIS) atmospheric correction algorithm. The 6SV1 code was tested against a Monte Carlo code and Coulson's tabulated values for molecular and aerosol atmospheres bounded by different Lambertian and anisotropic surfaces. The code was also tested in scalar mode against the scalar code SHARM to resolve the previous 6S accuracy issues in the case of an anisotropic surface. All test cases were characterized by good agreement between the 6SV1 and the other codes: The overall relative error did not exceed 0.8%. The study also showed that ignoring the effects of radiation polarization in the atmosphere led to large errors in the simulated top-of-atmosphere reflectances: The maximum observed error was approximately 7.2% for both Lambertian and anisotropic surfaces. (C) 2007 Optical Society of America.