关于中纬或低纬扰动对低纬或中纬度流场的作用

A NOTE ON THE RESPONSE OF THE LOW OR MIDDLE LATITUDE FLOW FIELD TO THE MIDDLE OR LOW LATITUDE DISTURBANCE

摘要: 用付里叶方法求解正压无辐散涡度方程,把初始扰动分别加在中纬或低纬,求得这些扰动在低纬或中纬度产生的作用.结果表明:这种作用都是不能忽视的,而且中纬扰动对低纬度流场产生的影响比相同的低纬扰动对中纬度的影响要大.

Abstract: By using the Fourier method to solve the barotropic and nondivergent vorticity equation,the effect produced by the middle or low latitude disturbance to the flow field at the low or middle latitude is investigated.The result indicates that this kind of effect cannot be disregarded and the middle latitude disturbance produces larger effect at the low latitude than that a same low latitude.disturbance can produce at the middle latitude.