Abstract

The propagation of finite amplitude baroclinic wave packets in the two-layer model is investigated by using the multiple-scale method. It is shown that the propagation of the wave packets can be described by the so-called unstable nonlinear Schrodinger equation which possesses envelope soliton solutions. The speeds of the solitons are independent of their amplitudes.while the width of the solitons is directly proportional to their speeds but inversely proportional to their amplitudes.

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