Evaluation of NWP and Cloud Forecasts from the Phillips Laboratory Global Spectral Model.

Abstract

This report describes the results of a 3O-month effort aimed at evaluating forecasts of temperature, winds, humidity, and clouds from the advanced physics global spectral model (APGSM) developed by the Phillips Laboratory, in comparison with the currently operational GSM and cloud forecast models at Global Weather Central (GWC). Forecasts out to four days were generated for four separate months of 1989. Results show improved forecasts of thicknesses in the extratropics from the APGSM, but wind forecasts with generally larger errors. Forecasts of humidity are improved at some levels, regions, and forecast lead times, degraded at others. Root mean square errors of total cloud cover forecasts based on APGSM output are lower than those of the currently operational 5-layer model only for those techniques with much too smooth cloudiness distributions. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Dec 02, 1994
Accession Number
ADA295452

Entities

People

  • Lawrence W. Knowlton
  • Marina Zivkovic
  • Mark Mickelson
  • Thomas Nehrkorn

Organizations

  • Atmospheric and Environmental Research, Inc

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Air Force
  • Cloud Cover
  • Clouds
  • Condensation
  • Convection
  • Databases
  • Geographic Distribution
  • Geography
  • Grids
  • High Latitudes
  • Humidity
  • Information Science
  • Latent Heat
  • Lead Time
  • Meteorology
  • North America
  • Weather Forecasting

Fields of Study

  • Environmental science

Readers

  • Atmospheric Science/Meteorology
  • Computational Modeling and Simulation