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    Weather radar - Wikipedia

    Between 1950 and 1980, reflectivity radars, which measure the position and intensity of precipitation, were incorporated by weather services around the world. The early meteorologists had to watch a cathode ray tube. See more

    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.). Modern weather … See more

    Principle image
    Limitations and artifacts image

    Sending radar pulses
    Weather radars send directional pulses of microwave radiation, on the order of one microsecond See more

    Reflectivity
    Return echoes from targets ("reflectivity") are analyzed for their intensities to establish the precipitation rate in the scanned volume. … See more

    Radar data interpretation depends on many hypotheses about the atmosphere and the weather targets, including:
    • International Standard Atmosphere.
    • Targets small enough to obey the Rayleigh scattering, resulting in the return being proportional … See more

    History image
    Overview image
    Data types image

    During World War II, military radar operators noticed noise in returned echoes due to rain, snow, and sleet. After the war, military scientists … See more

    Radar display methods image
    Solutions and future solutions image

    Various methods of displaying data from radar scans have been developed over time to address the needs of its users. This is a list of common and specialized displays: See more

    Filtering
    These two images show what can be achieved to clean up radar data. On the first image made … See more

     
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    WEBJun 1, 1998 · The 1950s brought not only an expansion of military weather radar capabilities, but also a major expansion of the Weather Bureau’s radar systems. On 9 April 1953, a major tornado occurred in central …

  11. Up until 1940s, Americans didn't even get tornado …

    WEBMay 24, 2011 · Doppler radar allowed forecasters to see more than just precipitation. With the new radar, they could actually detect wind circulations within storms that could lead to tornado formation.

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