All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 138 25 13
PDF Downloads 28 21 16

Precipitation Particle Measurements in Cumulus Congestus

Edward N. BrownUniversity of Chicago

Search for other papers by Edward N. Brown in
Current site
Google Scholar
PubMed
Close
and
Roscoe R. Braham Jr.University of Chicago

Search for other papers by Roscoe R. Braham Jr. in
Current site
Google Scholar
PubMed
Close
Full access

Abstract

Precipitation particle measurements from the upper levels of cumulus congestus clouds are analyzed with regard to general cloud characteristics, liquid water content, and precipitation water content as related to the theoretical radar reflectivity. Conclusions are: (1) the majority of the cumulus congestus clouds examined, whose tops exceed 14,000 ft, contained precipitation particles (250-microns diameter) in the upper levels sometime during their life cycle, (2) particle concentrations in excess of 1000 per m3 were found in about 20 per cent of the clouds examined, (3) the relationship Z=1.6×10−2M1.46 for radar reflectivity is applicable for cumulus congestus in the early stages of precipitation development.

Abstract

Precipitation particle measurements from the upper levels of cumulus congestus clouds are analyzed with regard to general cloud characteristics, liquid water content, and precipitation water content as related to the theoretical radar reflectivity. Conclusions are: (1) the majority of the cumulus congestus clouds examined, whose tops exceed 14,000 ft, contained precipitation particles (250-microns diameter) in the upper levels sometime during their life cycle, (2) particle concentrations in excess of 1000 per m3 were found in about 20 per cent of the clouds examined, (3) the relationship Z=1.6×10−2M1.46 for radar reflectivity is applicable for cumulus congestus in the early stages of precipitation development.

Save