Simulation of thunderstorm microbursts with a supercompressible numerical model.

K. K. Droegemeier, R. P. Davies-Jones

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The thunderstorm microburst, first identified by Fujita, is a small scale (radius of 2-4 km), very intense and short lived (most lasting for only 3-10 minutes) downrush of air which emanates from the base of a cloud. Since it is difficult to collect high resolution data on microbursts, even with Doppler radar (which provides no information on the thermodynamics), the authors have developed a two dimensional, axisymmetric numerical model to study microburst dynamics. As described, the model efficiently solves the fully compressible equation of motion, along with appropriate equations governing the thermodynamic energy and water substance. By varying the ambient thermal stratification, relative humidity, and size and intensity of microburst downdraft, several parameter spaces are spanned with the model to elucidate the sub cloud dynamics of microbursts.

Original languageEnglish (US)
Title of host publicationProceedings of the 5th international conference, held in Montreal, Canada on 6th-10th July, 1987
EditorsCedric Taylor, W G Habashi, M M Hafez
PublisherPineridge Press Ltd
ISBN (Print)0906674646, 9780906674642
StatePublished - 1987
Externally publishedYes

Publication series

NameNumerical methods in laminar and turbulent flow
Volume5

ASJC Scopus subject areas

  • General Engineering

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