Accession Number : ADA186162

Title :   Radar Echo Signatures versus Relative Precipitation.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH

Personal Author(s) : Huber, Terry A

PDF Url : ADA186162

Report Date : Jan 1987

Pagination or Media Count : 39

Abstract : The objective of this study is to show the relationship between cell-echo signatures and precipitation characteristics, and to support the hypothesis that, during the lifespan of any particular isolated convective cell, the relative rainfall rate, as determined by radar for a given volume scan and averaged over horizontal area of radar echo, is related to characteristics of echo-profiles of average reflectivity (dBz) and horizontal area, as defined by the 10-dBz contour. The data used were collected during the Texas HIPLEX (High Plains Cooperative Program) field experiments of 1979. Four isolated cases, two rainshowers and two thundershowers, were selected for study. Profiles from volume scans taken 10 minutes before, during, and 10 minutes after the maximum radar-determined rainfall rate, averaged over horizontal area of the echo for each use, were examined for signatures relative to the time of occurrence of this maximum average. The following tentative conclusions were reached based on the small sample.

Descriptors :   *PRECIPITATION, *RADAR REFLECTIONS, *RADAR SIGNATURES, *RAINFALL INTENSITY, CELLS, CONVECTION, HORIZONTAL ORIENTATION, HYPOTHESES, ISOLATION, RADAR, RATES, REFLECTIVITY, TEXAS

Subject Categories : Active & Passive Radar Detection & Equipment
      Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE