Numerical simulation of land-atmosphere interaction and oasis effect over oasis-desert
沙漠-绿洲陆-气相互作用和绿洲效应的数值模拟

We use a developed parameterized scheme of land surface processes and a transfer model to simulate the physical process of land surface and the interaction between the land surface and the atmosphere boundary layer over an oasis-gobi inhomogeneous area in a semi-arid region. Structure features of vertical section are given more clearly and carefully. The results of numerical simulation are in accord with the previous observations. The results show that the oasis effect has clear cold island effect and wet island effect. It displays that environmental temperature is lower, humidity is higher and the energy of turbulent momentum transfers weakly over oasis than over desert, and there are circulations between oasis and desert. Making more detailed studies on these phenomena is of great significance to understanding of the formation of oasis climate and sustaining mechanisms of oasis.