Search
Now showing items 1-10 of 11
The Kinetic Energy of Hailfalls. Part III: Sampling Errors Inferred, from Radar Data
Publisher: American Meteorological Society
Abstract: The representativeness of hailfall kinetic energies derived from point measurements of networks is studied by means of radar data of hail cells. The 202 cells were observed within a radius of 60 km from the 10 cm radar. ...
Radar Hall Profiles in Switzerland
Publisher: American Meteorological Society
Abstract: Radar reflectivity profiles of 154 hail cells have been investigated. An average profile (the hail profile) has been derived. A global method has been used since the hail profile is designed to be applied to global hail ...
Further Results of Grossversuch IV: The Effect of the First Rocket Launched into a Potential Hail Cell
Publisher: American Meteorological Society
Abstract: The data obtained in Grossversuch IV about hail prevention triggered the hypothesis that only the first rocket launched into a potential hail cell decreases hail kinetic energy in an effect-time interval around 10 min after ...
The Kinetic Energy of Hailfalls. Part I: Hailstone Spectra
Publisher: American Meteorological Society
Abstract: The relationship between radar reflectivity and kinetic energy flux (Z-?) is investigated by means of analyses of hailstone size distributions measured with hail spectrometers. Semi-empirical relations assuming monodisperse ...
Nowcasting of Motion and Growth of Precipitation with Radar over a Complex Orography
Publisher: American Meteorological Society
Abstract: Motion vectors of radar echo patterns can be obtained by applying a cross-correlation method (e.g., the TREC method) to radar data collected several minutes apart Here an extension of TREC, called COTREC, is presented. ...
Raindrop Size Distributions and the Radar Bright Band
Publisher: American Meteorological Society
Abstract: The relationship between raindrop size distribution, measured with a disdrometer, and a radar parameter of the melting-layer bright band is investigated. The data, obtained in July 1993 in Switzerland, cover 120 h of ...
The Kinetic Energy of Hailfalls. Part II: Radar and Hailpads
Publisher: American Meteorological Society
Abstract: The kinetic energy of hailfalls is measured with a 10 cm radar. For comparison of the results a total of 204 hailpad stations was used covering an area of 780 km2, i.e., one pad per 3.8 km2. The experimental setup is such ...
Comparison of Traditional and Newly Developed Thunderstorm Indices for Switzerland
Publisher: American Meteorological Society
Abstract: The preconvective environment on thunderstorm days in Switzerland north of the Alps has been investigated during a 5-yr period (1985?89). Thermodynamic and kinematic parameters calculated from the radiosounding in Payerne ...
Hailstorms in Switzerland: Left Movers, Right Movers, and False Hooks
Publisher: American Meteorological Society
Abstract: In the central region of Switzerland, lying between the Jura Mountains to the north and the Alps to the south, severe hailstorms are a common summertime phenomenon. Eight years of data on these hailstorms show that they ...