地表温度反演的数值方法

Methods Introduction for Surface Temperature Retrieval

陆地表面温度(LST)是区域和全球尺度上陆地表面物理过程的一个关键参数,它综合了地表和大气相互作用以及能量交换的结果。研究地表温度对全球能量平衡的研究有着重要的意义。地表温度反演以地表热辐射传输方程为基础,直接求解辐射传输方程是不可能的,也就是说它是不适定的。因此要采用一系列的数值计算方法来求解。主要介绍了几种方程解算的非线性数值方法,并阐述了其大致过程及优缺点。

Land surface temperature is a key parameter of surface physical process and plays an important significance to the energy balance in the world,which affects the energy exchange between land surface and atmosphere.Surface Temperature Retrieval is based on RTE,and it is ill-posed.Therefore,we have to adopt numerical algorithm.In this paper,we mostly introduced several non-line algorithms and expounded their process,advantages and disadvantages.