Abstract
An analysis of the kinetic energy budget is made for a tropical cyclone. Horizontal flux convergence constitutes a major energy source. Generation of kinetic energy via cross-contour flow is a persistent sink throughout the pre-storm and growth periods. Dissipation of kinetic energy from subgrid to grid scales is an important source during the pre-storm and growth periods; it acts as the major sink of energy during the decay period. The major contribution to kinetic energy comes from a persistent upper tropospheric jet stream activity throughout the period of the cyclone development. Unlike midlatitude cyclones, a considerable quantity of kinetic energy appears between 850 - 500 hPa layers especially during the growth period. While the behavior of the values of horizontal divergence by nondivergent wind closely resemble to those of total horizontal divergence term, neglecting the divergent part of the wind would clearly lead to a considerable error in the calculation of total horizontal divergence. The mean error in approximation of total horizontal divergence by the nondivergent part during the life cycle of our cyclone is about 36%.
Highlights
Tropical cyclone landfall engages numerous important issues including structure/change in intensity and track turning when it moves towards coastal area, sustention and decay over land, storm surge, wind strength and rainfall
This paper has described the kinetic energy budget and the relative contributions of divergent and rotational wind components to the kinetic energy balance during the period of a tropical cyclone
Generation of kinetic energy term acts as an energy sink throughout the pre-storm and growth periods, which indicate on average that the cross contour flow is down gradient in the vicinity of cyclone during these two periods
Summary
Tropical cyclone landfall engages numerous important issues including structure/change in intensity and track turning when it moves towards coastal area, sustention and decay over land, storm surge, wind strength and rainfall. The land falling tropical cyclone rainfall is one of the majority complex issues. When a tropical cyclone approaches the coastal area, interaction between ocean, atmosphere and land topography should be considered. The greater part of the severe disasters or catastrophes were often caused by heavy rainfall of a land falling tropical cyclone which could result in flash flooding, reservoir collapses and debris flow to threaten the loss of. How to cite this paper: Abdel-Basset, H., Husin, M.A.A. and Hasanen, H. (2015) Kinetic Energy Budget of a Tropical Cyclone.
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