非均匀粘性基流中带状浅对流单体的发展

用WKBJ方法讨论了非均匀基流中带状浅对流单体的发展问题，只有在二维非均匀基流的热成风平衡条件下，带状对流环流的传播才具有重力惯性波特征，由于非均匀介质的作用，缓变波列的频率变化不仅是位相变化的源，还可能是振幅变化的一部分，纵向云带和横向云带的发展除粘性致稳作用是共同的，基流的其它非均匀性对不同云带的发展和云带结构起不同的作用。

The Development of the Shallow Band Convection Cell in Nonuniform Viscous Basic Flow

This paper has investigated the development of the shallow band convection cell in nonuniform basic flow by using WKBJ method. The propagation of the band convective circulation shows the characteristics of the gravitational_inertia wave only when the thermal wind balance of 2D nonuniform basic flow is achieved. Because of the nonuniform media, the frequency variability of the slowly varying wave train is not only the source of the phase variability, but also a part of the amplitude variability possibly. The nonuniform characteristic of basic flow has different influnces on the development and structure of the transverse and longitudinal cloud bands except the viscosity which is always steady in both cloud bands.