从空间测量陆面温度的可行性物理基础

从空间测量陆面温度的可行性物理基础

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Initial contribute: 2018-12-04

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岳天祥编著
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yue@lreis.ac.cn
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Method-focused categoriesData-perspectiveRemote sensing analysis
Method-focused categoriesProcess-perspectivePhysical process calculation

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从空间测量陆面温度的可行性物理基础

(1) 发射率和温度之间的关系模型:

式中,,为普朗克常数;,为光速;为玻尔兹曼常数;分别为热力学温度和亮度温度;为波长;为谱发射率。

(2) 辐射输运――源函数J模型:

式中,为光学厚度;为在处沿方向的辐射;由天顶角 (向下为正)和方位角构成;为散射函数,给出在处由方向入射的辐射散射到方向的单次散射的分布模式;为单次散射反射率;为内部源,为热源,分别为定向和镜面反射的假源,且有:

式中,为普朗克函数;为太阳天顶角的余弦;为入射到大气顶部的太阳光照量(垂直于太阳光束)为大气下表面的镜向反射率;为大气层总的光学厚度。

(3) LOWTRAN计算――平均波谱辐射模型:

式中,为热波段内的传感器响应函数;波段范围为

(4) 简化的下边界条件模型:

 

参考文献:

方正明,道席:从空间测量陆面温度的可行性。环境遥感,1989, 4(2)

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《资源环境数学模型手册》 (2018). 从空间测量陆面温度的可行性物理基础, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/9195e26a-981f-4951-9ee5-2d08391f1d2e
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Initial contribute : 2018-12-04

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岳天祥编著
:  
yue@lreis.ac.cn
:  
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