Functions of the different type of disturbances in a simple air-sea coupled model in the tropics

By using Fourier (Weber function) extension and filter methods, functions o f the different type of disturbances in a simple air-sea coupled model inve stigated in the local thermal equilibrium case. The results show that atmos pheric quasi-stationary Rossby waves and the oceanic Rossby waves are impor tant to the coupled system, these waves control the character of the system . On the contrary, the atmospheric quasi-stationary Kelvin wave and the oce anic Kelvin wave are unimportant to the character of the coupled system.