基于DEM的单窗算法及山区地表长波净辐射的计算

地表温度和长波净辐射是地表能量平衡中两个重要的能量项。首先对单窗算法应用于山区的可行性进行了分析，然后依据DEM和大气温度、湿度轮廓线对地表气温和湿度进行空间上的插值。在计算出每个像元上的气温值和湿度值基础上求算出单窗算法所需要的两个主要的大气参数分布图——大气平均作用温度分布图和大气透过率分布图，从而将单窗算法推广应用于地形起伏悬殊的山区，以计算各个高程上的地表温度。通过建立基于DEM的山地热辐射传输模型，计算每个像元来自于周围地形的热辐射分量，引用大气向下长波辐射公式计算其分量，并依据长波辐射平衡方程计算山区各个像元的长波净辐射。

Mono-window algorithm DEM based and derivation of net long-wave radiation of land surface in mountainous area

Land surface temperature and net long-wave radiation are two important energy terms in land surface energy balance.First of all,the author analyzed the feasibility of the application of mono-window algorithm in mountainous area.Then,the interpolation of land surface atmospheric temperature and humidity was made based on DEM and contour lines of atmospheric temperature and humidity.When the land surface temperature and humidity values of all pixels were calculated,two main atmospheric parameters distribution...