暴雨与非暴雨过程涡散场能量收支特征

COMPARING CHARACTERISTICS OF BUDGET FOR DIVERGENT AND ROTATIONAL COMPONENTS OF KINETIC ENERGY IN HEAVY RAIN AND NO-HEAVY RAIN PROCESSES

选取云南暴雨和非暴雨两类天气过程，分别应用涡散场能量收支方程，计算了暴雨区面积－时间平均能量收支各项量值，给出了对流层整层和上（２００～４００ｈＰａ）、中（４００～６００ｈＰａ）、下（６００～８００ｈＰａ）各层的涡散场动能源汇特征，同时还指出了两类天气在动能制造、能量转换等方面存在的较大差异。

By using budget equations for rotational and divergent components of kinetic energy,the area-time averages of each term are computed for 200～400,400～600,600～800 hPa layers to describe energetics of the lower,middle and upper troposphere for heavy rain and no-heavy rain processes The results show that the generation,conversion and transport for divergent components of kinetic energy are different and the signs of the major energy budget are opposite in heavy rain and no-heavy rain processes