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The TPV is a major weather system that causes precipitation in summer over the Tibetan Plateau.It usually generates in the western part of the plateau and disappears in the east.One noteworthy feature is that a small number of TPVs can develop and move eastward out of the Tibetan Plateau when conditions are favorable,leading to heavy rain,thunderstorms and other severe weather processes in the plateaus catchment area.In terms of its dynamics,The Tibetan Plateau Vortex (TPV) is assumed to be a vortex in the boundary layer forced by diabatic heating and friction.In order to analyze the basic characteristics of waves in the vortex,the governing equations for the vortex were established in column coordinates with the balance of gradient wind.Based on this,the type of mixed waves and their dispersion characteristics were deduced by solving the linear model.The changing vorticity causes the formation and spreading of vortex Rossby (VR) waves,and divergence will cause changes to the motion of the excitation and evolution of inertial gravity (IG) waves.Therefore,the vortex may contain what we call mixed inertial gravity–vortex Rossby (IG–VR) waves.It is suggested that some strongly developed TPVs should be studied in the future,because of their effects on weather in downstream areas.