通量和平流形式预报方程的数值预报试验

本文利用1982年5月8日和1979年6月28日两个实例,进行了四种方案的48小时数值预报试验,比较了它们的预报质量及彼此间的差异。四种方案是:经典通量、通量修正、经典平流和平流修正。试验表明,在有地形的数值预报模式中,采用平流形式的预报方程组比采用通量形式的为好,既可有较高的计算精度,又可节省计算时间。

Numerical Prediction Experiments with Flux and Advection Forms of Dynamic Equations

Two cases of May 8,1982 and June 28,1979 are used for numerical prediction experiments in which four different predicting schemes are tested in order to compare their prediction skills and differences. The results show that the adoption of the set of equations in advection form in numerical models with topography is better than that in flux form. The set of dynamic equations in advection forms can guarantee higher accuracy and save computer time.