Accession Number : AD0274775

Title :   GROSSWETTER TYPES AND DEPARTURES FROM THE MEAN FLOW AS STRATIFICATION PARAMETERS FOR THE 500 MB EUROPEAN GEOSTROPHIC WIND FIELD

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : LAHEY,JAMES F.

Report Date : DEC 1961

Pagination or Media Count : 1

Abstract : The efficacy of the Grosswetter classification in forecasting the wintertime u and v components of the 500 mb wind at 55 N, 40 E is evaluated. This classification is found to be generally superior to seasonal climatology. Daily deviations from the monthly 500 mb resultant flow at 55 N, 40 E are organized into nine classes. The percentage frequency of these nine classes within each Grosswetter type is shown and the feasibility of probability forecasts based on these percentages is suggested. The nine wind classes at 55 N, 40 E are then used to discern the 500 mb wind flow characteristics of the Wz Grosswetter type over western Europe which are related to the u and v components at 55 N, 40 E. (Author)

Descriptors :   *WIND, CLASSIFICATION, CLIMATE, HIGH ALTITUDE, STATISTICAL ANALYSIS

Distribution Statement : APPROVED FOR PUBLIC RELEASE