摘要
文献[1]研究了初生西南涡扰动在弱不稳定层结下出现不稳定发展的情形,但没回答扰动不稳定发生后,西南涡怎样发展的问题。本文利用临界摄动方法,讨论了初生西南涡扰动不稳定后,在垂直速度及位温垂直分布不均匀引起的弱非线性垂直平流的调节和反馈作用下,扰动发展形成稳定的具有一定空间结构的过程。当参数取适当数值时,可获得与实际基本一致的结果。
By the critical perturbation method, the process of the unstable early southwest vortex disturbance developing to be stable under the functions of adjustment and feedback of the weak nonlinear vertical advection caused by the vertical unevenness of the vertical velocity and the potential temperature is discussed. when the parameters of equation take suitable data, the solutions are consistent roughly with actual values, and they have the characteristic of the supercritical bifurcations.
出处
《气象学报》
CSCD
北大核心
1992年第3期365-372,共8页
Acta Meteorologica Sinica
