Accession Number : ADA290948

Title :   Current Procedures for Forecasting Aviation Icing.

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Tucker, W. B., III

PDF Url : ADA290948

Report Date : AUG 1993

Pagination or Media Count : 36

Abstract : The responsibilities for aircraft icing forecasts in the U.S. lie with the National Weather Service (NWS) for civilian operations and the U.S. Air Force Air Weather Service (AWS) and Naval Weather Service for Military operations. Forecasting technology is based upon empirical rules and techniques that were developed in the 1950s. The AWS is the only forecasting agency which issues explicit numerical icing products to aid the forecaster. These products are also based upon the application of techniques developed long ago. The NWS has no rigorous guidelines for developing icing forecasts, thus individual forecasters adopt their own preferred methods. The tendency is generally to "over-forecast, that is, to forecast too large an area of icing for too long a time. A major shortcoming in the ability to produce more accurate forecasts is that atmospheric parameters critical to icing are not routinely observed.

Descriptors :   *ICE FORMATION, *WEATHER FORECASTING, NUMERICAL ANALYSIS, ACCURACY, AERONAUTICS, AVIATION SAFETY.

Subject Categories : Military Aircraft Operations
      Commercial and General Aviation
      Meteorology
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE