Accession Number : AD0620439

Title :   AN ANALYSIS OF NUMERICAL CLOUD FORECASTS. A STATISTICAL ANALYSIS OF TOTAL CLOUD COVER FORECASTS PRODUCED BY TWO AIR WEATHER SERVICE NUMERICAL PROGRAMS.

Descriptive Note : Master's thesis,

Corporate Author : SAINT LOUIS UNIV MO

Personal Author(s) : Michaels,Robert Edward de

Report Date : 1965

Pagination or Media Count : 61

Abstract : The Air Weather Service, USAF, has a requirement to provide total cloud cover forecasts for the northern hemisphere. Three approaches were made to provide numerical forecasting programs to meet this requirement: (1) A 'Dynamic Cloud Forecasting Model' based upon forecasting the trajectories of air parcels; (2) A '4-layer Cloud Forecasting Model' based upon the forecasting of adiabatic vertical velocities and a statistical correlation between cloud cover and the forecast dewpoint depression; and (3) a 'Multiple-discriminant Analysis' program developed by applying statistical techniques to determine a minimum number of predictors which would most efficiently forecast total cloud cover by statistical methods.

Descriptors :   (*ALL WEATHER AVIATION, WEATHER FORECASTING), (*CLOUD COVER, MATHEMATICAL PREDICTION), (*WEATHER FORECASTING, CLOUD COVER), AIR FORCE OPERATIONS, METEOROLOGICAL PHENOMENA, NORTHERN HEMISPHERE, STATISTICAL ANALYSIS, MATHEMATICAL MODELS

Distribution Statement : APPROVED FOR PUBLIC RELEASE