Accession Number : AD0614706

Title :   MESOSCALE STUDIES OF INSTABILITY PATTERNS AND WINDS IN THE TROPICS.

Descriptive Note : Semi-annual rept. no. 3, 1 Jun-30 Nov 64,

Corporate Author : MIAMI UNIV FLA MARINE LAB

Personal Author(s) : Gerrish, Harold P. ; Hiser,Homer W.

Report Date : FEB 1965

Pagination or Media Count : 69

Abstract : Iso-echo contoured CAPPI radar data collected manually on 16 July and 28 September, and non-contoured CAPPI data on 1 October 1964 are used to investigate the motions of individual tropical showers at 'altitudes' of 10,000, 20,000, and 30,000 ft. The motions at these 'altitudes' are tested as possible indicators of wind. Echo-motion shear between 'altitudes' is used to illustrate mechanisms by which the showers grow under baroclinic conditions. Vertical profiles of radar reflectivity and precipitation rate from the showers are examined. Reflectivity equations and nomograms for the MPS-4, modified CPS-6B, and WSR-57 radars are presented. The relationship Z=300R exp 1.4 is used to relate radar reflectivity to tropical rainfall rates. The attenuation problem at a wavelength of 4.7 cm is described and illustrated. (Author)

Descriptors :   (*METEOROLOGY, TROPICAL REGIONS), (*METEOROLOGICAL RADAR, AIR MASS ANALYSIS), (*WIND, TROPICAL REGIONS), FLORIDA, WEATHER FORECASTING, RAINFALL, RADAR REFLECTIONS, RADAR CROSS SECTIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE