VERTICAL MOTIONS AND THE KINETIC ENERGY BALANCE OF A COLD LOW

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  • 1 National Hurricane Research Laboratory, ESSA, Miami, Fla.
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Abstract

Vertical motions have been computed for a 6-day period during which an upper tropospheric cold Low moved through the eastern Caribbean, and a kinetic energy budget for the region has been constructed. During the first 3 days, the kinetic energy inside the volume increased. The computations indicate that the increase was caused by lateral advection of kinetic energy into the volume plus a small internal conversion of potential to kinetic energy. The kinetic energy decreased during the last 3 days, as the circulation became indirect. Visual agreement between the vertical motions and the observed weather was good.

Abstract

Vertical motions have been computed for a 6-day period during which an upper tropospheric cold Low moved through the eastern Caribbean, and a kinetic energy budget for the region has been constructed. During the first 3 days, the kinetic energy inside the volume increased. The computations indicate that the increase was caused by lateral advection of kinetic energy into the volume plus a small internal conversion of potential to kinetic energy. The kinetic energy decreased during the last 3 days, as the circulation became indirect. Visual agreement between the vertical motions and the observed weather was good.

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