Accession Number : AD0739544

Title :   A Center for the Description of Environmental Conditions. Weather Phenomena.

Descriptive Note : Annual progress rept. no. 4, 1 Oct 70-1 Oct 71,

Corporate Author : OKLAHOMA STATE UNIV STILLWATER SCHOOL OF ELECTRICAL ENGINEERING

Personal Author(s) : Hughes,William L. ; McCollum,Paul A. ; Pybus,Emmett J.

Report Date : DEC 1971

Pagination or Media Count : 98

Abstract : The Oklahoma State University Themis Weather Phenomena Project sampled severe storm sferics in the vicinity of central Oklahoma and the Black Hills of South Dakota, as well as warm cumulus electrostatic fields in the Brownsville, Texas area. Data analysis has shown continued association of increased sferics with increasing severity of a storm. However, discrete storm events such as a tornado or hail do not consistently correlate with enhanced sferics in the VLF. Storm impulse periods are apparent from a sferic-rate power density spectral analysis performed on both airborne and ground based data. A cumulus, charge-density structure, model has been devised and a field-mill data reduction model is not being developed. (Author)

Descriptors :   (*ATMOSPHERICS, DATA PROCESSING), (*THUNDERSTORMS, ATMOSPHERICS), PATTERN RECOGNITION, SPECTRUM SIGNATURES, WEATHER FORECASTING, CLOUDS, LIGHTNING, POLARIZATION, VERY LOW FREQUENCY, TORNADOES, MATHEMATICAL MODELS, FOG, CLEAR AIR TURBULENCE, OKLAHOMA, COLORADO, SOUTH DAKOTA, NEW MEXICO, CALIFORNIA

Subject Categories : Atmospheric Physics
      Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE