Simulating Fluxes from Heterogeneous Land Surface
下垫面非均匀性的模拟

The stand-alone land surface transfer scheme (LSX) of GENESIS is used to study moisture, energy and momentum flux from heterogeneous land surface at the scale of an atmospheric model grid cell. The experiments made in this study are designed upon three different strategies to represent subgrid variability, that is, mosaic, mixture and explicit subgrid method. It's found that difference for the three methods of solar flux absorbed at surface can be up to 4%, sensible heat flux to 12%, latent heat flux to 66% and soil moisture to 30%. These results emphasize the need to validate approaches which account for subgrid variability with observation data; and the necessity of using Regional Climate Model to simulate fluxes from heterogeneous land surfaces.