Abstract

An analysis of the kinetic energy budget is made for a cyclonic development over the Mediterranean. Horizontal flux convergence constitutes a major energy source. Generation of kinetic energy via cross-contour flow is a persistent sink except only a weak energy source for the decay period of our case study. Dissipation of kinetic energy, computed as a residual, has local maxima both in the lower troposphere and near the jet stream level. By investigating the relative importance of divergent and non-divergent components in the kinetic energy budget we found that when calculating the magnitude of the kinetic energy one may safely replace the total wind with the non-divergent one. But the horizontal flux convergence of kinetic energy and the generation of kinetic energy are sensitive to the magnitude of the divergent wind.

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