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KETV was the first station in the market to have a full-time meteorologist beginning in the early 1970s, the first station to use live weather radar in the late 1970s, and was the second station to utilize Doppler weather radar in the early 1980s. In November 2006, KETV overtook long-time ratings leader WOWT to become the top-rated news station ...
Website. ktiv.com. KTIV (channel 4) is a television station in Sioux City, Iowa, United States, affiliated with NBC and The CW Plus. Owned by Gray Television, the station has studios on Signal Hill Drive in Sioux City, and its transmitter is located near Hinton, Iowa. KTIV was the second television station to be built in Sioux City.
KWQC-DT2 is the Ion Television–affiliated second digital subchannel of KWQC-TV, broadcasting in standard definition on channel 6.2.. On August 13, 2007, KWQC launched a local digital weather service called the "KWQC 24/7 Weather Channel" on over-the-air digital subchannel 6.2 and on Mediacom digital channel 247 in the Quad Cities and surrounding areas.
Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
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 ...
A video shared by Sioux City TV station KTIV showed a tornado forming over farmland. ... The National Weather Service radar shows a line of strong storms north and east into central Iowa.
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 ...
The scale of dBZ values can be seen along the bottom of the image. Decibel relative to Z, or dBZ, is a logarithmic dimensionless technical unit used in radar, mostly in weather radar, to compare the equivalent reflectivity factor (Z) of a remote object (in mm 6 per m 3) to the return of a droplet of rain with a diameter of 1 mm (1 mm 6 per m 3). [1]