Observations of convectively coupled Kelvin waves
Convectively coupled Kelvin waves are large-scale, eastward-propagating tropical , convective disturbances with the dispersion characteristics of equatorially trapped shallow water Kelvin modes. Convection in these waves propagates eastward at 15-20 m s- 1 , with a horizontal scale of approximately 3000 km, and is accompanied by largescale dynamical perturbations in the troposphere and lower stratosphere that are broadly consistent with linear equatorial wave theory. Observations of convectively coupled Kelvin waves are presented based on statistical composites of global reanalysis and radiosonde ...
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