Operational bi-angle approach to retrieve the Earth surface albedo from AVHRR data in the visible band
Operational bi-angle approach to retrieve the Earth surface albedo from AVHRR data in the visible band
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DOI：
10.1080/01431169508954410
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发表时间：
1995-02
影响因子：
3.4
通讯作者：
Yong Xue;A. Cracknell
中科院分区：
文献类型：
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作者：
Yong Xue;A. Cracknell
摘要利用可见光观测资料进行地表光谱反射率推断比较复杂，主要是因为散射效应。本文试图在求解辐射传递方程的基础上，解决从卫星辐射测量数据中反演地表反射率的问题。我们已经开发了一种操作方法，该方法依赖于多个视角观测或多个太阳天顶角观测地表，以常规方式完成部分任务。这种方法可以用于ERS-2 ATSR可见光波段，因为在同一时间对同一区域将有两个视角观测。该方法也可用于NOAA卫星AVHRR数据，前提是气溶胶的分布随时间的变化不会太快。通常选择当天中午和黄昏前后的AVHRR数据比较好。这种方法要求该地区的能见度在5公里以上。
Abstract The inference of surface spectral reflectance using visible observations is complicated mainly because of scattering effects. In the present paper we attempt a solution to the problem of retrieval of surface reflectance from satellite radiance measurements based on a solution of the radiative transfer equation. We have developed an operational method which relies on multiple view angle observations or multiple solar zenith angle observations of the surface to accomplish part of this task in a routine manner. This approach may be used for ERS-2 ATSR visible bands because there will be two view angle observations for the same area at essentially the same time. This approach can also be used with NOAA satellite AVHRR data by assuming that the distribution of the aerosol does not vary too rapidly as a function of time. Usually it is better to select the AVHRR data from around noon and at dusk in the same day. This approach requires that the visibility of the area should be more than 5 km for multiple...