Abstract 40 hail and hail-hazardous clouds of various strengths were considered, which seeded with the help a glaciogenic agents in order to prevent interrupt hail. An unseeded control cloud was matched for each cloud. For this, parameter dV 35 used – volume radio echo reflectivity more than dBZ above level zero isotherm. A considered be if at time beginning seeding 10 minutes before that diffe...

OBJECTIVES To assess the dental health knowledge and the interest of secondary school teachers in imparting oral health education in Hail, Saudi Arabia. METHODS It was a questionnaire based cross-sectional survey of secondary school teachers in Hail, Saudi Arabia, carried out from November 2014 to January 2015. A validated self-administered questionnaire was used to determine teachers' oral h...

Analyses are made of the evolution of selected polarimetric radar data fields during periods immediately preceding the onset of near-surface hail indicators [high reflectivity and low differential reflectivity (Zdr)] in two nonsupercellular northeastern Colorado hailstorms. The primary data were obtained from the 11-cm-wavelength, dual-polarization Colorado State University (CSU)–University of ...

Abstract Storms that produce gargantuan hail (defined here as ≥ 6 inches or 15 cm in maximum dimension), although seemingly rare, can cause extensive damage to property and infrastructure, injury even death humans animals. Currently, we are limited our ability accurately predict detect on radar. In this study, analyze the environments radar characteristics of hail-producing storms define parame...

A fuzzy logic and neuro-fuzzy system for classification of hydrometeor type based on polarimetric radar measurements is described in this paper. The hydrometeor classification system is implemented by using fuzzy logic and a neural network, where the fuzzy logic is used to infer hydrometeor type, and the neural network learning algorithm is used for automatic adjustment of the parameters of the...

Polarimetric radar data have been used to produce microphysical classifications. This kind of analysis is run in a real-time mode from several research radars, including the C-band polarimetric (C-Pol) radar in Darwin, Australia. However, these classifications have had very little systematic evaluation with independent data. Using surface data is often difficult because of sampling issues, part...