Abstract
The adiabatic, quasi-geostraphic, 25-layer, numerical, linear model with Ekman boundary layer friction is utilised to perform the baroclinic stability analysis of the mean monsoon zonal wind profile. It is shown thec i is a function of the resultant wavenumber alone. This relation is able to explain the effects of the lateral walls on the unstable waves.
The energetics and zonal plane distribution of the short and long preferred viscous waves are computed. The upward motion of the short wave together with the warm (cold) core lies to the west of the surface trough position above (below) 850 mb. Further, it is shown that the main source of kinetic energy for the wave lies in the middle layer (850–700 mb) which is transported to the lower and upper layers. Computed\(\overline {v'T'} \) is found to be in good agreement with observed values.
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Salvekar, P.S., Mishra, S.K. Baroclinic energetics and zonal plane distribution of monsoon disturbances. PAGEOPH 123, 448–462 (1985). https://doi.org/10.1007/BF00880743
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DOI: https://doi.org/10.1007/BF00880743