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Dependence of nongeostrophic baroclinic instability of wave disturbances on the vertical resolution of a numerical model

Subrahmanyam, D (1983) Dependence of nongeostrophic baroclinic instability of wave disturbances on the vertical resolution of a numerical model. Archives for Meteorology, Geophysics, and Bioclimatology Series A, 32 (3). pp. 289-300.

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Abstract

A numerical investigation of baroclinic instability of nongeostrophic wave perturbations with different vertical resolutions (N) of the model was made. It has revealed the well known shift in the unstable wave spectrum towards shorter wave lengths and an increase in the growth rates and band width of unstable waves with increasing N. The vertical tilt of troughs and ridges and energy conversion rates of the unstable waves have also shown an increase with the increase in the number of information levels in the model. However, these increases in the growth rates and band width of unstable waves appear to be due to better resolution in the vertical structure of the waves, leading to the increased energy conversions in the model, rather than due to either the relaxation of algebraic restraint on the solutions, as has been shown by Hirota 2 for the case of a quasi-geostrophic model, or due to better resolution in vertical, of the basic state parameters of the numerical model, as has been claimed by Mishra and Salvekar 3.

Item Type: Article
Additional Information: Copyright of this article belongs to Springer-Verlag
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 17 Apr 2015 10:43
Last Modified: 17 Apr 2015 10:43
URI: http://moeseprints.incois.gov.in/id/eprint/1291

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