https://wikimd.org/index.php?action=history&feed=atom&title=Weather_radarWeather radar - Revision history2026-04-25T06:39:10ZRevision history for this page on the wikiMediaWiki 1.44.2https://wikimd.org/index.php?title=Weather_radar&diff=5892543&oldid=prevPrab: CSV import2024-06-05T23:25:08Z<p>CSV import</p>
<p><b>New page</b></p><div>[[File:NSSL_Doppler_with_rainshaft_-_NOAA.jpg|thumb|NSSL_Doppler_with_rainshaft_-_NOAA]] [[file:Darwin_Ap_WF3_Radar.jpg|right|thumb|Darwin_Ap_WF3_Radar]] [[file:OUPRIME1.png|right|thumb|OUPRIME1]] [[file:Typhoon_Cobra,_18_December_1944_east_of_Luzon.jpg|thumb|Typhoon_Cobra,_18_December_1944_east_of_Luzon]] [[file:1965May06_1919.jpg|thumb|1965May06_1919]] [[file:NEXRAD_and_thunderstorm_in_New_Underwood,_South_Dakota,_2004_-_NOAA_Photo_Library_Wea01195.jpg|thumb|NEXRAD_and_thunderstorm_in_New_Underwood,_South_Dakota,_2004_-_NOAA_Photo_Library_Wea01195]] [[file:Radar-beam.svg|thumb|Radar-beam]] '''Weather radar''' is a type of [[radar]] used to locate [[precipitation]], calculate its motion, and estimate its type (rain, snow, hail, etc.). Modern weather radars are mostly [[pulse-Doppler radar]]s, capable of detecting the motion of rain droplets in addition to the intensity of the precipitation. Both types of data can be analyzed to determine the structure of storms and their potential to cause severe weather.<br />
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==History==<br />
The development of weather radar began during [[World War II]] when military radar operators noticed that weather phenomena were causing echoes on their radar screens. After the war, these observations led to the development of dedicated weather radar systems.<br />
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==Principles of Operation==<br />
Weather radar works by emitting a pulse of [[microwave]] energy. When this pulse encounters precipitation, part of the energy is scattered back to the radar. The time it takes for the echo to return is used to calculate the distance to the precipitation, while the strength of the returned signal indicates the intensity of the precipitation.<br />
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===Doppler Effect===<br />
The [[Doppler effect]] is used to measure the velocity of precipitation particles. By analyzing the frequency shift of the returned signal, meteorologists can determine whether the precipitation is moving towards or away from the radar, which helps in identifying rotation in severe storms.<br />
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==Types of Weather Radar==<br />
* '''Conventional Radar''': Measures the intensity of precipitation.<br />
* '''Doppler Radar''': Measures both the intensity and velocity of precipitation.<br />
* '''Dual-Polarization Radar''': Provides information on the shape and size of precipitation particles.<br />
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==Applications==<br />
Weather radar is crucial for [[weather forecasting]], especially for predicting severe weather events such as [[thunderstorms]], [[tornadoes]], and [[hurricanes]]. It is also used in [[aviation]] to ensure the safety of flights by detecting hazardous weather conditions.<br />
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==Limitations==<br />
Weather radar has several limitations, including:<br />
* '''Beam Blockage''': Obstacles such as mountains can block the radar beam.<br />
* '''Attenuation''': Heavy precipitation can absorb and scatter the radar signal, weakening the returned signal.<br />
* '''Ground Clutter''': Reflections from buildings, trees, and other objects can create false echoes.<br />
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==Related Pages==<br />
* [[Radar]]<br />
* [[Doppler radar]]<br />
* [[Precipitation]]<br />
* [[Weather forecasting]]<br />
* [[Thunderstorm]]<br />
* [[Tornado]]<br />
* [[Hurricane]]<br />
* [[Aviation]]<br />
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==See Also==<br />
* [[Meteorology]]<br />
* [[Severe weather]]<br />
* [[Climate]]<br />
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[[Category:Radar]]<br />
[[Category:Meteorology]]<br />
[[Category:Weather forecasting]]<br />
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{{Meteorology}}<br />
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