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Available potential energy generation due to sensible heating and frictional dissipation of kinetic energy in an Arabian sea cyclone

Prasad, KD and Pant, GB (1978) Available potential energy generation due to sensible heating and frictional dissipation of kinetic energy in an Arabian sea cyclone. Archiv fur Meteorologie, Geophysik und Bioklimatologie, Serie A, 27 (3-4). pp. 273-287.

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Abstract

The generation of available potential energy (APE) due to sensible heating and fractional dissipation of kinetic energy for three times during the life cycle of a cyclonic system over the Arabian sea are studied. The diagnostic advective model as suggested by Johnson 4 and used by Bullock and Johnson 1 for extra tropical cyclones is used. The limited volume containing the major circulation features of the storm system within the boundary sublayers (surface-850 mb) are considered Only the diabatic heating component arising out of sensible heat flux within the mixed layer and the frictional dissipation of kinetic energy are computed. Within the boundary sublayers of the storm volume there is a generation of APE in the eastern sector and a negative generation to the west of it. The near zero values of mean generation within the volume indicate an inefficient mechanism as far as the generation by sensible heating is concerned. Dissipation values of 12.4 W/m2, 9.0 W/m2, and 4.4 W/m2 for the three times considered are comparable to other similar studies. Small values of APE generation by sensible heating in this case study compared to the frictional dissipation of kinetic energy is perhaps an indication of relative importance of other diabatic factors in generating APE and maintaining the storm's kinetic energy against frictional dissipation.

Item Type: Article
Additional Information: Copyright of this article belongs to Springer
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 18 Apr 2015 05:30
Last Modified: 18 Apr 2015 05:30
URI: http://moeseprints.incois.gov.in/id/eprint/1381

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