WSR-88D Radar Imagery detecting precipitation
The word radar is an acronym from "Radio Detection and Ranging". Radar images are useful for locating precipitation.
WSR-88D - Weather Surveillance Radar - 1988 Doppler; NEXRAD unit.
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WSR-88D System
The summation of all hardware, software, facilities, communications, logistics, staffing, training, operations, and procedures specifically associated with the collection, processing, analysis, ...
WSR-88D radars can detect reflectivities as low as -32 dBZ near the radar site, but significant (measurable) precipitation generally is indicated by reflectivities of around 15 dBZ or more.
WSR-88D - New type of Doppler radar installed in the US and used widely by many weather officials. Developed and first deployed in 1988 at NSSL.
The WSR-88D system that generates 1-hour running, 3-hourly, and running storm total precipitation accumulations. Five functional steps are performed to calculate the best estimate of precipitation: 1) development of a sectorized hybrid scan, 2) ...
It is automatically produced by the WSR-88D's Radar Product Generator (RPG) in 3 parts (reflectivities, storm motion, and echo tops).
Storm Relative Mean Radial Velocity Map(SRM): This WSR-88D radar product depicts a full 360º sweep of radial velocity data with the average motion of all identified storms subtracted out. It is available for every elevation angle sampled.
Precipitation ModeThe standard, or default, operational mode of the WSR-88D. The radar automatically switches into precipitation mode from clear-air mode if the measured reflectivity exceeds a specific threshold value.
ASR-9Airport Surveillance Radar (FAA) ASSOCIATED PRINCIPAL USERA Principal User with dedicated communications to a WSR-88D unit.Astronomical DawnThe time at which the sun is 18 degrees below the horizon in the morning.
Velocity Azimuth Display (VAD): This WSR-88D radar product displays a graphical plot of mean radial velocity versus azimuth angle for a particular altitude.
Doppler Dilemma - a limitation with a pulsed Doppler radar (like the WSR-88D) that involves a trade-off between a wide range of observable radial velocities and the detection of echoes at a long range from the radar.
WEATHER SURVEILLANCE RADAR (WSR-88D) The newest generation of Doppler radars, the 1988 Doppler weather radar.
The popular name for the radar itself, the WSR-88D weather radar, which became the operational network radar for the U.S. National Weather Service, U.S. Air Force, and Federal Aviation Administration during the early and middle 1990s.
These sites are specifically designed to provide meteorological data so the official designation is WSR-88D (WSR88D = Weather Surveillance Radar - 1988 - Doppler).
88-D- In reference to the WSR-88D radar. Stands for Weather Surveillance Radar, 1988 Doppler
AC- Altocumulus
ADIABATIC- A process that causes rising air to cool and sinking air to warm ...
A property computed by RADAP II and WSR-88D units that takes into account the three-dimensional reflectivity of an echo. The maximum VIL of a storm is useful in determining its potential severity, especially in terms of maximum hail size.
Algorithm - A computer program (or set of programs) which is designed to systematically solve a certain kind of problem. WSR-88D radars (NEXRAD) employ algorithms to analyze radar data and automatically determine storm motion, probability of hail, ...
PROFILER- A remote ground-based sensing instrument that measures wind speed and direction at different levels of the atmosphere. The new National Weather Service WSR-88D radar has this capability, ...
Doppler Radar- radar that determines the intensity of rainfall and velocities of water and air particles; the National Weather Service uses a type of Doppler Radar called the WSR-88D, or NEXRAD; ...
weather radar being deployed to replace WSR-57 and WSR-74 units in the US. NEXRAD is a high-resolution Doppler radar with increased emphasis on automation, including use of algorithms and automated volume scan. NEXRAD units are known as WSR-88D.
A network of advanced Doppler radars, known as the WSR-88D (Weather Surveillance Radar - 1988 Doppler), developed in the 1980s and implemented in the 1990s to replace the aging network of WSR-57 and WSR-74 radar systems.
1988 - WSR-88D type weather radar implemented in the United States. Weather surveillance radar that uses several modes to detect severe weather conditions.
1992 - Computers first used in the United States to draw surface analyses.
 See also: Radar, Weather, Storm, Precipitation, Air
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