The Domain Decomposition Method in Land Surface Model

The domain decomposition method is a superior method in solving big and complicated problem. This article puts forward a domain decomposition method based on the weighted average, this method decomposes the grid based on the land cover, and discrete parameters using time dimension finite difference method, and then the patches of each grid are weighted aggregated to obtain the final output. This paper proposed the concrete steps of the method, and validated it by using the sensible and latent heat flux simulation result based on the CoLM (The common land model) land surface model.