锋生过程对扰动发展的影响

本文用WKBJ方法讨论了叠加在Hoskins-Bretherton［1］]锋生模型背景上的小扰动发展问题。考虑了大尺度变形场、锋区斜压气流及锋生环流对扰动发展的作用，发现锋生过程有利于与锋平行的中小尺度扰动发展，而锋消则有利于沿锋传播的横波型扰动发展。

The Effects of Frontogenetical Process on the Development of Disturbance

The development of infinilesimal disturbances in the form of wave packet superposed on the frontogenetically forced basic state of Hoskins-Bretherton frontogenesis model is investigated by means of the WKBJ method. The effects of large scale deformation field, the baroclinic flow of frontal zone and non-geostrophic circulation of frontogenesis on the development of disturbances are discussed, respectively. It is found that the frontogenesis is in favour of the development of the disturbance propagating parallelly to the front, while frontolysis is in favour of the development of the disturbance propagating along the front.