Accession Number : ADA255869


Title :   On the Potential Use of the Terminal Doppler Weather Radar Gust Front Detection Algorithm on the WSR-88D System. Part II: Detecting Non-gust Front Convergent Weather Phenomena


Descriptive Note : Interim rept.


Corporate Author : NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION NORMAN OK NATIONAL SEVERE STORMS LAB


Personal Author(s) : Stumpf, Gregory J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a255869.pdf


Report Date : Oct 1991


Pagination or Media Count : 44


Abstract : This study examines the capability of the Gust Front Detection Algorithm (GFDA) developed for the Terminal Doppler Weather Radar (TDWR) system to detect other types of non-gust front weather phenomena which are associated with patterns of convergence in a Doppler-radar radial velocity field. The potential use of the GFDA as a nowcasting tool, a mesoscale forecasting tool, and as a tool to detect other kinds of aviation hazards besides gust fronts, needs investigation. The phenomena studied include synoptic fronts, sea-breeze fronts, gravity waves, terrain-induced convergence boundaries, old thunderstorm outflow boundaries, and the convergence bands within extratropical cyclones associated with enhanced precipitation. Comparisons of the convergent characteristics of these other phenomena to those of gust fronts are made. In addition, several case studies are presented to demonstrate the ability of the GFDA to detect the non-gust front phenomena.


Descriptors :   *DOPPLER RADAR , *METEOROLOGICAL RADAR , *WIND SHEAR , *GUSTS , ALGORITHMS , DETECTION , WEATHER , BOUNDARIES , PATTERNS , RADIAL VELOCITY , SEA BREEZE , THUNDERSTORMS , GRAVITY WAVES , CYCLONES , OCEANS , CIVIL AVIATION , CONVERGENCE , CASE STUDIES , PRECIPITATION , TERRAIN , HAZARDS , TOOLS , COMPARISON


Subject Categories : Meteorology
      Active & Passive Radar Detection & Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE