A Regional Climate Model with Soil and Vegetation and Model Validation
一个包含土壤和植被的区域气候模式及其性能检验

In this paper, a regional climate model is developed. The regional climate model consists of three submodels, i.e., soil submodel, vegetation submodel and atmospheric submodel. Soil, vegetahon and atmosphere are linked in a coupled system through transfer and exchange of heat, water and momentum. In order to deal with the influences of topography on the regional climate, the mixed vertical coordinate systems in which combines the rectangular coordinate systems with the terrain-following coordinate system are adopted in the atmosphere. Divergence modification scheme is used in the model so that the physical basis of the model is rational. In addition, important physics processes are included.By carrying out simple numerical experiments it is shown that the regional climate model can simulatetemperature diurnal varition of soil and canopy and treat topography well. The model is also very stable and sensitive to the inhomogeneities of underlying surface conditions.