Hail Detection Using Radar Observations
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Hail Detection Using Radar Observations
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Author : Institut royal météorologique de Belgique
language : en
Publisher:
Release Date : 2003
Hail Detection Using Radar Observations written by Institut royal météorologique de Belgique and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Hail Detection Using Radar Observations
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Author :
language : en
Publisher:
Release Date : 2003
Hail Detection Using Radar Observations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Observations Of Oblate Hail Using Dual Polarisation Radar And Implications For Hail Detection Schemes
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Author : T. J. Smyth
language : en
Publisher:
Release Date : 1998
Observations Of Oblate Hail Using Dual Polarisation Radar And Implications For Hail Detection Schemes written by T. J. Smyth and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Automatic Detection Of Hail By Radar
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Author : Pio J. Petrocchi
language : en
Publisher:
Release Date : 1982
Automatic Detection Of Hail By Radar written by Pio J. Petrocchi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Algorithms categories.
An automated model algorithm for identifying hailstorms by radar is described. Hailstorms are identified by totaling seven weighted indicators based on a three-dimensional reflectivity structure of an ideal hailstorm. The weighting functions for each indicator and the total identifying the storms were determined by testing the algorithm with radar data that were verified by ground truth data. By use of these findings, the probability of detecting hail is 94 percent with a false alarm ratio of 6 percent for a critical success index (CSI) = 0.886 for this test sample.
Observations Of Rain And Hail Gushes After Lightning
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Author : C. B. Moore
language : en
Publisher:
Release Date : 1963
Observations Of Rain And Hail Gushes After Lightning written by C. B. Moore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with categories.
Observations of thunderstorms in New Mexico were made with a vertically-scanning, 3 cm radar on a mountain-top. Prior to a lightning stroke the radar echo was usually quite weak indicating precipitation echoes of 5 mm/hr or less. Following the lightning stroke it was observed that in the region of the cloud where the stroke took place the radar echo intensity rapidly increased and a gush of rain or hail fell nearby. In some cases after the lightning stroke there were regions in the cloud where the low radar reflectivity decreased instead of increased. These measurements confirm earlier radar observations, made by the authors at Grand Bahama Island B.W.I., which showed that lightning strokes are often followed by the detection of a rapidly-intensifying echo and then by a gush of rain at the ground. The increases and decreases in radar reflectivity in small volumes of the cloud following lightning suggest that the electric discharge is influencing the nature of particles in the cloud. (Author).
Improvement Of Hail Detection And Nowcasting By Synergistic Combination Of Information From Polarimetric Radar Model Predictions And In Situ Observations
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Author : Mari Luna Schmidt
language : en
Publisher:
Release Date : 2020
Improvement Of Hail Detection And Nowcasting By Synergistic Combination Of Information From Polarimetric Radar Model Predictions And In Situ Observations written by Mari Luna Schmidt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Radar Observations Of Hailstorms In Western Nebraska
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Author : Arnett S. Dennis
language : en
Publisher:
Release Date : 1971
Radar Observations Of Hailstorms In Western Nebraska written by Arnett S. Dennis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Hail categories.
Relationship Between Hailfall Intensity And Hail Damage On Ground Determined By Radar And Lightning Observations
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Author :
language : fr
Publisher:
Release Date :
Relationship Between Hailfall Intensity And Hail Damage On Ground Determined By Radar And Lightning Observations written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Weather radars are now available in many countries for operational observations and measurements of hailstorms and provide detailed information on the formation and structure of severe thunderstorms. Much research has been devoted to the quantitative measurement of hailfalls and the nowcasting of hail-bearing thunderstorms which is of interest for national weather services and airports (warning), the agricultural community (protection) and the insurance industry (damage estimation and mitigation). Although dual-polarization techniques have been improving in recent years, hail detection and measuring methods still have to rely on single-polarization radars. One of the most successful methods to derive hailfall intensities from single-polarization radars is hail kinetic energy that is calculated from radar reflectivity measurements and represents the total volume of hailfall per surface unit. Radar-derived hail kinetic energy (EKINPIX) showed valuable results in relation to ground-based measurements of hailfalls (hailpads) and amounts of hail damage to various crops. Based on the good agreement between radar- and ground-measured hailfall intensity, EKINPIX is related in this thesis to hail damage amounts on automobiles, buildings and cloud-to-ground (CG) lightning activity in analyzing a large number of radar-measured hail cells. The thesis consists of three parts: an introduction, three articles (submitted or published in Atmospheric Research) that are reproduced in individual chapters and a final chapter that presents two methodological approaches of how CG lightning location data could be used in the future to directly determine hailfall areas. Article 1 deals with the relationship between hailfall intensities and damages to automobiles, whereas Article 2 investigates a corresponding relationship for residential and agricultural buildings in Switzerland. Radar measurements were available from the C-band Doppler radar located at the Swiss Federal Institute of Techno.
Radar Meteorology
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Author : S. Raghavan
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Radar Meteorology written by S. Raghavan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.
As we all know, weather radar came into existence during the Second World War when aircraft detection radars had their vision limited by echoes from rain bearing clouds. What was often considered to be of nuisance value by the air force personnel trying to locate enemy aircraft was seen as an opportunity by the weather men. Thus adversity in one field was converted into an opportunity in another. Since then weather radar has found myriad applications with the increased sophistication of technology and processing systems. It has now become an indispensable tool for the operational forecasters, cloud physicists and atmospheric scientists. The current generation radar is but a distant echo of the radars of the 1940s. As a result, its operation and maintenance have become very complex, like the technology it uses. Therefore, there is a definite requirement of focussing our special attention not only on the science of radar meteorology but also on its operational aspects. The present book, as pointed out by the author, attempts to fill this gap. The author has presented the subject with a balanced blend of science, technology and practice. The canvas is indeed very broad. Starting with the history of weather radar development the book goes on to discuss in a lucid style the physics of the atmosphere related to radar observation, radar technology, echo interpretation, different applications and finally attempts to look into the future to indicate potential new opportunities in this field.
Research Directed Toward The Investigation Of Radar Techniques For Severe Storm Identification And The Measurement Of Precipitation Growth
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Author : PAULINE M. AUSTIN
language : en
Publisher:
Release Date : 1961
Research Directed Toward The Investigation Of Radar Techniques For Severe Storm Identification And The Measurement Of Precipitation Growth written by PAULINE M. AUSTIN and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.