中尺度气象数值模式

MESOSCALE METEOROLOGICAL NUMERICAL MODEL

对一个中尺度气象数值模式,就基本方程组、物理过程参数化、边界条件、数值积分方法等方面作了简单介绍。

The object of mesoscale meteorological research is the atmospheric phenomena, to which the geostrophic balance similarity can not be applied, but the the hydrostatic balance similarity still can be applied. The range of its horizontal scale is about 2.5 to 2500km. The numerical model for the mesoscale meteorological research should have such features as: high horizontal resolution, description of underlying surface with high precision and high resolution, detailed parameterization of physical processes, utmost reduction of the reflection of gravity wave onupper and lateral boundaries. lower boundary conditions coinciding with real situations and compressible (at least anelastic )mass continuity equation. A mesoscale me- teorological numerical model, which possesses the features mentioned above, is simply intro- duced in this paper including: basic equations, parameterization of physical processes, boundary condi-tions and numerical integration methods.