The Effects of Basic Flow on the Equatorial Rossby Waves and Gravity Waves

An equatorial β-plane linear model with basic flow was used to study the effects of basic flow on the equatorial waves. The results show that the equatorial Rossby wave and the gravity wave are still mixed in westerlies for n=0, but they are separated completely in easterlies, and the instable growth of the equatorial Rossby wave may occur in westerkies under some conditions