切变流中的CISK机制与惯性重力波  

THE CISK INERTIAL GRAVITATIONAL WAVES IN SHEAR FLOW

作　　者：夏友龙[1] 王永中[1] 

机构地区：[1]北京气象学院

出　　处：《热带气象学报》1996年第4期341-348,共8页Journal of Tropical Meteorology

摘　　要：利用板对称、有切变的大气动力学方程组，由行波法导出非线性常微分方程，通过非线性稳定性理论讨论方程的稳定性，求解了ＫＤＶ方程，并讨论了线性ＣＩＳＫ、非线性ＣＩＳＫ、惯性稳定度参数和大气风速垂直切变对惯性重力孤波强度和宽度的影响，目的是通过了解影响惯性重力孤波发展的因子，更深入地理解低纬中尺度天气系统（飑线、ＭＣＣ、冷涌。By using symmetric equations of atmospheric dynamics in y z plane with vertical and horizontal shear of wind, the nonlinear ordinary differential equation is derived with the method of travelling wave, its stability is discussed by the theory of nonlinear stability and KDV equation is solved.The infuences of the linear CISK, the nonlinear CISK, the Inertial stability and vertical shear of wind on amplitude and width of the isolated inertial gravitational waves are discussed. We aim to understand deeply the formation and development of meso scale synoptic systems (for example, squall, MCC and cold surge of Asia high) when we understand the factors of development of inertial gravitational waves.

关 键 词：切变流 CISK机制 惯性重力波 大气 

分 类 号：P433[天文地球—大气科学及气象学]