Abstract
A new numerical model of three dimensional hydro-metorological process has been developed for investigating the initiation and development of convective clouds considering the effect of air-soil interactions. This model consists of three parts, that is, atmosphere, constant flux layer and soil. For the subgrid turbulence process, ‘ Large Eddy simulation (LES)’ model is adopted with a timedependent turbulence energy equation. Soil temperature distribution is determined time-dependently and locally to satisfy both energy and moisture balances.
Microphysical processes of cloud and rain generation are described by the Kessler parameterization.The results show that the initiation of convection is effected strongly by the soil moisture distribution and the air-soil interaction intensify the development of convective clouds.
