Accession Number:

AD0274773

Title:

THE JET STREAM AS A STRATIFICATION PARAMETER FOR THE 500 MB GEOSTROPHIC WIND FIELD OVER EUROPE

Descriptive Note:

Corporate Author:

AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s):

Report Date:

1961-10-01

Pagination or Media Count:

1.0

Abstract:

The latitude at which the jet stream crosses the Greenwich Meridian was used as a stratification parameter for the 50 0mb geostrophic wind field over an area extending from 0 to 75 E longitude and from 35 N to 65 N latitude for the period November through March 1945-1952. The data were arbitrarily partitioned into depen ent and independent samples. The dependent sample has been used to obtain four classes of data based on the latitude of the jet stream at 0 longitude, while the independent sample was used to deter ine the reduction in error of prediction attained by using the class means rather than the mean of the entire sample as predictors of the geostrophic wind at 56 points in the predicted area. In the western half of the predicted area significant reductions in variance dependent sample and reductions in error of prediction independent sample are attained by the stratification method. Thirty-two maps are included. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE