It is an important method to estimate land surface evaporation of large region by using remote sensing data. With the development of remote sense and GIS technology

remote sensing evaporation model evolved from one-layer to two-layer model and four layer model. It introduces some remote sensing models of land surface evaporation such as surface energy balance system (SEBS)

complementary Relationship (CR) and simplified surface energy balance index (S-SEBI)

etc

and the retrial of land surface parameters is the model's main connotation from remote sensing data. The methods to derive land surface parameters such as impedance always need non-remote sensing data such as wind speed

temperature

so they restrict their application in water resources at large. Now the headway of remote sensing model is to derive land surface flux only by fully using remote sensing data.