论Amk预报方程及新的湿空气动力学方程组

ON THE Amk FORECAST EQUATION AND THE NEW DYNAMIC EQUATION SYSTEM OF MOIST AIR

摘要:

作者对推导的Amk预报方程各项的物理意义进行详细讨论后指出:Amk预报方程完全可以代替涡度方程,用于不同纬度地区天气系统发生、发展及移动的研究和预报。其优越性在于: 1、可以认为:引起天气系统发生发展的平流动力条件,是A_mk预报方程中产生项、释放项、水汽凝结速率项和效率因子变化项均为0时的特例。 2、将动力、热力的宏观物理过程同云雨凝结速率的微物理过程结合起来,有利于探讨它们间的关系。 3、给出了台风等天气系统的判据。 4、用A_mk预报方程和运动方程等组成的湿空气动力学方程组进行数值积分,可望提高对低纬天气系统的发生、发展和移动的预报效果,为台风和暴雨数值预报提供了一个新的模式。

Abstract:

After the A_mk forecast equation being derived and physical significance of theeach term being discussed in detail,the author point that the A_mk forecast epuation may be substitute entierly for vorticity equation used to study and forecast the generation, development and motion of synoptic system in different latitude zone. It's superniority is following:1. We may hold that advection dynamic condition causeed generation and development of weather system is special example that all terms are equale zero,which are the production term, the release term, the velocity term of vapour condensation and the change term of efficiency factor in the A_mk forecast equation.2. It is favored research relation between them to combine the process of dynamic and thermodynamic macrocosmic physical with process of micro physical of velocity of which cloud precipitation is condeensated.3. The paper have given the criterion condition of generation and development such weather system as typhoon etc.4. When we integrate the moist air dynamic equation system which is composed of the A_mk forecast equation and the motion equation, it may be expected to increase accurace of forecasting generation, development and migration of weather system in lower latitude zone, and to provided a new model of nunerical forecast for lower latitude and heavy-rain.