Accession Number : ADA189722

Title :   Development and Testing of the Gust Front Algorithm.

Descriptive Note : Interim rept.,

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

Personal Author(s) : Witt, Arthur ; Smith, Steven D

PDF Url : ADA189722

Report Date : Nov 1987

Pagination or Media Count : 40

Abstract : Threshold changes, additions, and other refinements to the original version of the Gust Front Algorithm are documented. Threshold changes include a minimum velocity difference threshold, the maximum azimuthal separation between vectors, and maximum range separation. Additions include gust front tracking and forecasting in Cartesian coordinates, vertical continuity checks of gust front features to reduce the occurrence of false detections, and horizontal wind estimation both ahead and behind a detected gust front using single Doppler velocity data. Results of these additions and the effects of threshold changes on detection capability are presented for several case studies. Keywords: Wind shear; Doppler radar; Gust fronts.

Descriptors :   *DETECTION, *DOPPLER RADAR, *DOPPLER SYSTEMS, *FRONTS(METEOROLOGY), *GUSTS, *WIND SHEAR, AZIMUTH, CARTESIAN COORDINATES, CASE STUDIES, CONTINUITY, ESTIMATES, FINITE DIFFERENCE THEORY, HORIZONTAL ORIENTATION, SEPARATION, THRESHOLD EFFECTS, VELOCITY, VERTICAL ORIENTATION, WIND

Subject Categories : Meteorology
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE