Case study of a low-reflectivity pulsating microburst - Numerical simulation of the Denver, 8 July 1989, stormResults from a 3D simulation of a very strong microburst, detected by the Low-Level Windshear Alert System, are presented. The simulation was performed using the Terminal Area Simulation System (TASS) model (Proctor, 1987) which is a 3D nonhydrostatic cloud model that includes parameterizations for both liquid and ice-phase microphysics. Emphasis is placed om the pulsating characteristic and the very-low radar reflectivity of the event. The simulation revealed that the dissipating cloud induces a type-1 pulsating microburst event, with at least three distinct microburst pulses over a period of 20 min.
Document ID
19940034220
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Proctor, Fred H. (NASA Langley Research Center Hampton, VA, United States)