An Automated Real Time Storm Analysis And Storm Tracking Program Weatrk
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An Automated Real Time Storm Analysis And Storm Tracking Program Weatrk
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Author : Carlton J. Bjerkaas
language : en
Publisher:
Release Date : 1980
An Automated Real Time Storm Analysis And Storm Tracking Program Weatrk written by Carlton J. Bjerkaas and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Automatic meteorological stations categories.
The evolution of the WEATRK system is described from the original software obtained under contract in 1977, to the present software configuration. The various portions of the software are discussed with emphasis on the algorithms used to determine storm significance and establish the storm track. Results of the two-year development effort and operational tests show the usefulness of assimilating large amounts of complex data and generating a computer-synthesized product easily used in forecast applications. The error analysis performed on the storm track forecast accuracy suggests that few of the errors encountered are due to meteorological effects but they are largely due to parameters such as beam width, pulse width, antenna rotation rate and rounding errors. The non-meteorological errors appear to average out over large data sets; that is, the longer the storm track the smaller the forecast error. Although the program now uses a three-dimensional analysis, very little analysis is performed on the velocity and variance fields. The usefulness of these fields along with other improvements are considered.
An Evaluation Of An Automatic Cell Detection And Tracking Algorithm
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Author : James G. Wieler
language : en
Publisher:
Release Date : 1982
An Evaluation Of An Automatic Cell Detection And Tracking Algorithm written by James G. Wieler 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.
A storm tracking algorithm designed to detect and track fine structure in digitized radar data is evaluated. These fine structures are defined by regions containing values within 3 dB of peaks in reflectivity factor. The algorithm describes storm structure and evolution by correlating these peak regions in time and space. The evaluation consists of a comparison of the algorithm output with raw data and with output from an AFGL algorithm which detects and tracks three-dimensional reflectivity weighted centroids defined by a preselected threshold. It is concluded that the algorithm cannot reliably detect and track significant structures within storms when applied to data sets with a temporal resolution of aprox. 6 min and a spatial resolution of 1.0 deg in azimuth and 0.7 deg in elevation. The significance of tracking 3 dB peaks is questioned and the implication of defining a larger peak threshold is discussed. The algorithm does track the large features of storms with results similar to the AFGL algorithm. However, it does not run in real time and is not modular, unlike the AFGL algorithm.
Next Generation Weather Radar Nexrad
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Author :
language : en
Publisher:
Release Date : 1986
Next Generation Weather Radar Nexrad written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Government publications categories.
Doppler Radar Meteorological Observations Wsr 88d Products And Algorithms
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Author :
language : en
Publisher:
Release Date : 1990
Doppler Radar Meteorological Observations Wsr 88d Products And Algorithms written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Doppler radar categories.
Joint Agency Doppler Technology Tests
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Author : Ralph J. Donaldson
language : en
Publisher:
Release Date : 1980
Joint Agency Doppler Technology Tests written by Ralph J. Donaldson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Doppler radar categories.
The Joint Doppler Operational Project was a cooperative inter-agency program directed toward the evaluation of recent advances in Doppler weather radar technology for operational applications by the participating agencies. The first two years of testing demonstrated the decisive superiority of Doppler techniques, in comparison with conventional methods, for reliable identification and early warning of tornadoes and other severe thunderstorm hazards. During the final year, the program evaluated the format and effectiveness of manually aided automatic display products transmitted in near-real time to operational agencies remotely located from the radar. Experiences of operating personnel utilizing these new techniques provide input toward system definition of NEXRAD, the Next Generation Weather Radar network now under development. One of the most encouraging examples of the enhanced warning capability realized by the remote transmission of the automated Doppler format was a successful forecast of severe weather for an Air Force Base which was a crucial factor in saving a fleet of aircraft from severe hail damage.
Technical Abstract Bulletin
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Author :
language : en
Publisher:
Release Date : 1981
Technical Abstract Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Science categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1981
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with Aeronautics categories.
The Fortieth Anniversary History Of Weather Radar Research In The U S Air Force
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Author : James I. Metcalf
language : en
Publisher:
Release Date : 1989
The Fortieth Anniversary History Of Weather Radar Research In The U S Air Force written by James I. Metcalf and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Radar meteorology categories.
Air Force Surveys In Geophysics
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Author :
language : en
Publisher:
Release Date : 1989
Air Force Surveys In Geophysics written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Geophysics categories.
Navenvpredrschfac Technical Report Tr
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Author :
language : en
Publisher:
Release Date : 1986
Navenvpredrschfac Technical Report Tr written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Meteorology categories.