摘要
针对已有的不稳定理论研究，提出把不稳定问题由求解特征值问题转化为求解初值问题，在考虑扰动气压和水汽作用的基础上建立一个二维线性化的非静力模式，以真实反映不稳定扰动特征。对称不稳定和斜压不稳定的理想试验结果与已有的理论研究结果相符，证明这种方法的运用是可行的。对１９９１年７月５日一次暴雨过程的数值试验表明。
Based on studies of the previous instable theories,a method that unstability problem is solved by initial value problem but not calculating eigenvalue problem is presented Considering the perturbation pressure and moisture,we developed a two-dimension linear nonhydrostatic model which describes comprehensively the characters of the unstable disturbance The fact that the experimental results of symmetric instability and slantwise instability conform to previous theoretical results prove that the method is successful Results of numerical experiment show conditional gravitational instability led to the occurence of the heavy rain during 12:00UTC 5 00:00UTC 6 July,1991
出处
《高原气象》
CSCD
北大核心
1996年第4期414-424,共11页
Plateau Meteorology
基金
国家科技攻关项目
