Abstract
Some atmospheric phenomena, i.e., gust front, morning glory and pressure dip, and their soliton models are reviewed. Atmospheric solitons of internal gravity wave type based on the weakly nonlinear theory are now classified into two categories : i) Algebraic solitons of the Benjamin-Davis-Ono equation, for which the waves are confined to the lower few kilometers of the troposphere, are used for models of gust front and morning glory. ii) KdV solitons of the Korteweg-de Vries equation, for which the waves occupy the entire troposphere, are used for models of pressure dip. Although the observations support the soliton models for these atmospheric phenomena qualitatively, developments of soliton theory for the treatment of upper layer in algebraic soliton model with non-zero scorer parameter and the upper boundary condition in KdV soliton model with the critical level are desired to discuss them quantitatively.
