The KP, CH equations were all obtained from internal wave models. some results are also obtained about the rotating fluid. I want to know whether they are also right for large scale atmospheric motions. Is it possible for us to derive the equations for the original equations by weakly nonlinear method.

And the ZK equation are used to simulate the motion of plasmas when considering the magnetic field, can we obtain a likely result for atmospheric motion for the original primitive equations.

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