Dynamical Studies in Hurricane Intensity Change
Abstract
LONG-TERM GOALS AND OBJECTIVES. The long-term goals and objectives of this research are to develop a physical understanding of tropical cyclone (TC) intensity change processes. Towards this goal, this year s work focused on two main areas: asymmetric dynamics of the TC inner-core region and vortex spin down over the open ocean. The following pages summarize pertinent milestones in each area. Wavenumber One Inner-Core Instability in Hurricane-like vortices: APPROACH. Smith and Rosenbluth (1990) showed that two-dimensional vortices that posses an angular velocity maximum other than at the center axis are susceptible to an algebraic instability whose amplitude grows as the square root of time. This type of angular velocity profile is typical for hurricanes because of their low vorticity centers (the eye), but their susceptibility to this type of instability has not yet been investigated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 1999
- Accession Number
- ADA630191
Entities
People
- Michael T. Montgomery
Organizations
- Colorado State University