二维冰雹云数值模式

本文介绍一个面对称的二维冰雹云模式,其动力学方程基本包含各种动力因子;嵌入改进的降水物理过程,可以描述粒子分布的双参数变化;设计一种新的悬浮边界,可改善边界的影响,设计降水粒子场外边界形态变化子程序,可描述流场和降水粒子场相互作用而形成的雷达回波特征。利用该模式,模拟计算出冰雹云弱回波结构,并研究不同热力扰动场、不同切变风场下对流流场的流型特征。

TWO-DIMENSION HAILCLOUD MODEL

A two-dimensions hailcloud model,that is a slabsymmetrical,the dynamic equations include all the factors as completd as possible,the micropysical procedure of cloud-precipitation has been improved and might describe the biparameter veriable evolution of size-distribution of hyparameter veriables,has desingned.A new lateral boundary scheme has suggested which may be refered suspending boundary and an operative technique of outline of hydrometeor feild has developed.By use of this scheme and technique we have successfully simulated the structure of weak eche region (WER) and studied the patterns of airflow in the cases of differant wind shear and differant intensity of heat disturbance.The results indicate that:1.The formation of boundary WER,unboundary WER and the double WER were simulated successfully;2.The pattern of convective airflow is various,which pattern can be occoured was dependent on the interaction among the shear intensity of environmental wind,stratification and heat disturbauce condition.