Accession Number : ADA336687

Title :   Graduate Research Training on a Dual-Polarization Meteorological Radar Project.

Descriptive Note : Final rept. 1 Jan 93-30 Jun 96,

Corporate Author : NEW MEXICO INST OF MINING AND TECHNOLOGY SOCORRO

Personal Author(s) : Krehbiel, Paul

PDF Url : ADA336687

Report Date : 07 JAN 1997

Pagination or Media Count : 3

Abstract : This research involved studies of dual-polarization meteorological radar observations of thunderstorms, particularly observations of electrically aligned particles in active storms. Radar data indicate the presence of large supercooled drops above freezing level in a small, developing New Mexico storm in the summer of 1993. This data is of particular interest to meteorologists investigating how precipitation initially forms in the relatively cold, dry storms of the desert southwest. Other research findings include analysis of the New Mexico Institute of Mining and Technology's Lightning Interferometer observations of intracloud lightning with storm structure. Intracloud discharges in small New Mexico storms were observed to transfer negative charge upward from the storm precipitation core to the upper part of the thunderstorm. This was consistent with dual-polarization observations of ice crystals that were vertically aligned by the storm's electric field in the upper part of the cloud prior to the discharges. Such electric field alignment observations may be used to remotely determine the electric field and charge structure within a thunderstorm.

Descriptors :   *METEOROLOGICAL RADAR, POLARIZATION, CORES, TRAINING, ELECTRIC FIELDS, CRYSTALS, MOISTURE CONTENT, ALIGNMENT, PRECIPITATION, PARTICLES, LIGHTNING, FREEZING, ICE, DROPS, STORMS, LOW LEVEL, NEW MEXICO, TRANSFER, ATMOSPHERIC PRECIPITATION, DUAL MODE, SUPERCOOLING, INTERFEROMETERS, THUNDERSTORMS, METEOROLOGISTS.

Subject Categories : Meteorology
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE