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本文解释了热带大尺度大气运动速度的分布,从线性化涡度方程和散度方程求出了波速公式,该公式等于罗斯贝波速与含有X和t的谐和函数之和,其周期约3.5天,并证明,此时扰动为正压不稳定,这种现象的产生是经向扰动和纬向扰动相互作用的结果。
This paper explains the distribution of velocity in tropical large-scale atmosphere. The wave velocity formula is obtained from the linearized vorticity equation and the divergence equation. The formula is equal to the sum of the Rossby wave velocity and the harmonic function containing X and t. The period is about 3.5 Day, and prove that the disturbance is positive and unstable at this moment. The appearance of this phenomenon is the result of the interaction of warp and zonal disturbances.