The Effects of Frontogenetical Process on the Development of Disturbance
锋生过程对扰动发展的影响

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.