The Longitudinal Variation of Equatorial Waves due to Propagation on a Varying Zonal Flow

摘要: AbstractThe general 1D theory of waves propagating on a zonally varying flow is developed from basic wave theory, and equations are derived for the variation wavenumber energy along ray paths. Different categories behavior found, depending sign group velocity cg property B. For B positive, vary in same sense, with maxima relative easterlies or westerlies, cg. Also accumulation Webster Chang occurs where goes to zero. However, negative, they behave opposite senses does not occur. The zonal propagation gravest equatorial analyzed detail using theory. nondispersive Kelvin waves, reduces 2, an analytic solution possible. all considered, except westward-moving mixed Rossby–gravity (WMRG) wave, which can have negative as well positive B.Comparison made between observed cl...