In short , through retrieving the parameter such as surface albedo , surface temperature and surface emissivity , all the energy flux such as net radiance flux , soil heat flux and latent heat flux can be computed in sequence further , then latent heat flux which provide energy for et can be computed based on energy balance equation , finally instantaneous et and daily et can be obtained 总之，根据地表能量平衡方程，通过计算对地表反照率、地表温度、地表比辐射系数、归一化植被指数等参数进行反演，进一步计算出了地表净辐射通量，土壤热通量和潜热通量，最后获得了遥感影像成像时的瞬时蒸散及当天的总蒸散量。
Some variables regional distribution over south ningxia is given out in the course of evapotranspiration estimation : the regional distribution of surface characteristic parameters ( normalzed difference vegetation index , surface albedo , surface temperature ) , radiation balance components ( surface absorbed shortwave radiation , surface longwave radiation , atmospheric counter radiation , net radiation ) , surface heat and balance components ( soil heat flux , sensible heat flux , latent heat flux ) 估算区域蒸发(散)量的过程中，得到许多有意义的量：地表特征参数(植被指数ndvi 、地表反射率、地表温度) ；地表辐射平衡各量(地表短波吸收辐射、地表长波辐射、大气逆辐射、地表净辐射) ；地表热量平衡各量(土壤热通量、显热通量、潜热通量) 。
A transfer model is established , which can be used to study the interaction between the land surface physical processes of inhomogeneous region and the structure of atmosphere boundary - layer over urban and rural terrains . the model has simulated surface heat flux , surface temperature , temperature profiles , height of mixture layer and so on . and the differences between urban area , suburban area and rural area have been compared . this model mainly depends on the parameters below : surface albedo , surface roughness coefficient , moisture available coefficient of soil , thermal capacity and thermal diffusion coefficient of errain , cloudage . the result shows that this model can simulate the structure and eigenvalues of atmosphere boundary layer and their changes in a day . parameters used in this model aim at beijing city , and the time is at the beginning of september . to other cities , or other time , the parameters should be adjusted accordingly . in addition , being adjusted , the model can also be used for other homogeneous and inhomogeneous terrains 模式主要依赖于以下参数和物理量：地面反照率下垫面粗糙度土壤的可含水量下垫面的热容量和热扩散系数云量等参数。结果表明，本模式能合理地模拟不同地表热量平衡地表气温混合层高度湍流交换系数湍流动能位温廓线等，以及它们的日变化。该模式所取参数主要针对北京市，时间为九月初，对于其他城市，参数应作相应的调整。
