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Weather Underground is a commercial weather service providing real-time weather information over the Internet. It provides weather reports for most major cities around the world on its Web site, as well as local weather reports for newspapers and third-party sites. Its information comes from the National Weather Service (NWS), and over 250,000 ...
The frequency selection of weather radar is a performance compromise between precipitation reflectivity and attenuation due to atmospheric water vapor. Some weather radars uses doppler shift to measure wind speeds and dual-polarization for identification of types of precipitations. [3] [4] Weather radar; Wind profilers; Millimetre cloud radar ...
WREG-TV (channel 3) is a television station in Memphis, Tennessee, United States, affiliated with CBS and owned by Nexstar Media Group. The station's studios are located on Channel 3 Drive near the Mississippi River on the west side of Memphis, and its transmitter is located near Bartlett, Tennessee .
Website. www.wkrn.com. WKRN-TV (channel 2) is a television station in Nashville, Tennessee, United States, affiliated with ABC and owned by Nexstar Media Group. The station's studios are located on Murfreesboro Road (U.S. Routes 41 and 70S) on Nashville's southeast side, and its transmitter is located in Forest Hills, Tennessee.
A NEXRAD weather radar currently used by the National Weather Service (NWS) is a 10 cm wavelength (2700-3000 MHz) radar capable of a complete scan every 4.5 to 10 minutes, depending on the number of angles scanned, and depending on whether or not MESO-SAILS [7] is active, which adds a supplemental low-level scan while completing a volume scan ...
Doppler effect. The emitted signal toward the car is reflected back with a variation of frequency that depends on the speed away/toward the radar (160 km/h). This is only a component of the real speed (170 km/h). The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842, is the difference ...