Valentinesmith
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Joined: 06 Jul 2012
Posts: 145
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 Posted: Sat Jul 07, 2012 7:49 am Post subject: WHAT IS RADAR? |
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The word "radar" is an acronym derived from the words Radio Detection And Ranging. It refers to the technique of using radio waves to detect the presence of objects in the atmosphere. Radar was designed shortly before World War II. Its primary purpose was to detect the presence of aircraft. Today, radar is used for a wide array of applications, but primarily to detect precipitation and other meteorological events.
NEXRAD is short for Next generation RADar and refers to the nationwide network of Doppler radar sites installed by the National Oceanographic and Atmospheric Administration (NOAA). Its official designation is WSR-88D (WSR88D = Weather Surveillance Radar - 1988 - Doppler). NOAA designed this network specifically to provide comprehensive radar coverage of meteorological events occurring in the United States.
An extensive network of NEXRAD stations provides almost complete radar coverage of the continental United States, Alaska, and Hawaii. The range of each NEXRAD is 124 nautical miles.
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