Analytic Modeling of Severe Vortical Storms.
Abstract
The analytic modeling of well-organized rotating convective storms is invoked to elucidate the evolution from a moderately intense one-cell vortex, characterized by low-level pressure deficits on the order of one percent of atmospheric pressure, to a very intense two-cell vortex, characterized by low-level pressure deficits on the order of ten percent of atmospheric pressure. The physical distinction between the two stages rests on the insertion of a dry, compressionally heated, nonrotating, central downdraft of originally tropopause-level air in the transition to the more severe case. The quasisteady mature description of the thermohydrodynamic structure of each vortex is being developed, and then the conditions for transition from the moderately intense to the very intense vortex will be sought. The practical motivation is to make progress toward the highly desirable, but very formidable task of being able to anticipate which tropical storms or minimal hurricanes will evolve to supertyphoons. With a description of the one-cell storm, believed adequate for present purposes, already available, description of the two-cell vortex is the current challenge.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1981
- Accession Number
- ADA107706
Entities
People
- Francis E. Fendell
- George Carrier
- Phillip Feldman