Accession Number:

AD0256867

Title:

SOME EFFECTS OF RANGE UPON AN/CPS-9 RADAR REFLECTIVITIES IN THUNDERSTORMS

Descriptive Note:

Corporate Author:

TEXAS A AND M UNIV COLLEGE STATION

Personal Author(s):

Report Date:

1961-01-01

Pagination or Media Count:

1.0

Abstract:

Echo height and radar reflectivity measurements were obtained for central and southeast Texas thunderstorms. Storms were classified into five categories according to the severity of surface weather reported by cooperative observers, U. S. Weather Bureau severe storm summaries, and newspaper clippings. Median profiles of the reflectivities were constructed, and comparisons were made between reflectivities measured at various ranges. Regression curves were obtained which relate the product of the attenuation and beam filling factors to the target distance from the radar. Results indicate that attenuation of 3.2-cm radiation and beam filling are important factors in the radar equation and cannot be ignored even at close range when accurate measurements are required. The signal depletion term appears more important than the beam filling factor in power attenuation resulting from increased range. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE