NUMERICAL SIMULATION EXPERIMENTS OF LAND SURFACE PHYSICAL PROCESSES AND LOCAL CLIMATE EFFECT IN FOREST UNDERLYING SURFACE

Based on atmosphere boundary layer and plant canopy micrometeorology basic principles, a forestunderlying surface land surface physical processes model and two dimensional space atmosphere boundary layer numerical model was developed and numerical simulation experiments of biosphere and physiological process of vegetation and soil volumetric water content has been done on land surface processes with local climate effect. The numerical simulation results show good agreement with realistic, which can be used to obtain reasonable simulation for diurnal variations of canopy temperature, air temperature of in canopy, ground surface temperature, and time and spatial distribution of potential temperature and vertical wind velocity and relative humidity and turbulence exchange coefficient over non-homogeneous underlying surfaces. It indicates that the model developed can be used to study the interaction between land surface process and atmospheric boundary layer over various underlying surface and can be extended for local climate study. This work laid a solid foundation for coupling climate models with the biosphere.