MESOSCALE STUDIES OF INSTABILITY PATTERNS AND WINDS IN THE TROPICS.
Semi-annual rept. no. 3, 1 Jun-30 Nov 64,
MIAMI UNIV FLA MARINE LAB
Pagination or Media Count:
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 Z300R 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