A Comparison of the Sensitivity of Two Similar Objective Forecast Techniques.

Abstract

A number of computerized objective forecast techniques are available to assist the JTWC in the preparation of warnings. Of concern is the sensitivity of these techniques to errors in the warning and history positions. Two techniques, TSGLOB and TYMOD, were selected for testing. Both techniques utilize the 24-hour global band upper air progs (GBUA) provided by FLENUMWEACEN Monterey, California. After selectng a GBUA field and running control forecasts for both techniques, errors of six and 12nm were introduced into the warning and history position, both individually and collectively. The results showed that TYMOD was less sensitive to positioning errors than TSGLOB. In addition, the TYMOD errors tended to reach a maximum about +48 hours and then decrease in magnitude thereafter. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1974
Accession Number
ADA064538

Entities

People

  • Leon H. Craiglow Jr

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Aircrafts
  • Artificial Satellites
  • California
  • Cyclones
  • Errors
  • Fleet Weather Central
  • Grids
  • Latitude
  • Reconnaissance
  • Reconnaissance Aircraft
  • Second World War
  • Sensitivity
  • Steering
  • Tropical Cyclones
  • Weather Reconnaissance Aircraft
  • Wind
  • Wind Direction

Readers

  • Atmospheric Science/Meteorology
  • Systems Analysis and Design