Accession Number:

AD0617311

Title:

THE FREQUENCY OF RADAR DEPICTED PRECIPITATION ECHOES IN CENTRAL MISSOURI AND ILLINOIS.

Descriptive Note:

Master's thesis,

Corporate Author:

SAINT LOUIS UNIV MO

Personal Author(s):

Report Date:

1965-01-01

Pagination or Media Count:

98.0

Abstract:

A WSR-57 Radar with a wavelength of 10.4 centimeters was used to observe precipitation echoes within a 100 nautical mile radius of the Saint Louis Weather Bureau Airport Station, Saint Louis, Missouri. The observations were made hourly at all times during which precipitation echoes were occurring within the 100 nautical mile range. Interpretation of the range normalized charts shows that the mean echo distribution has a distinct monthly and seasonal variation with areas of maximum echo occurrence moving with a relationship to the seasonal variation of frontal or convective type precipitation. Areas of echo shadow are found which remain fixed in position and are not a function of meteorological parameters. There is an indication that ground clutter is causing an echo loss near the center of the scope.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE