Doppler weather radar
Quick Summary
Doppler weather radar is an advanced radar technology that measures the intensity and extent of precipitation. Unlike traditional radar, it utilizes the Doppler frequency shift to determine the radial velocity of precipitation particles, which indicates wind speed and direction. This capability is crucial for identifying hazardous weather phenomena like tornadoes and hurricanes, as these often involve rotating weather patterns. The Nexrad system, employed by the National Weather Service, uses pulse Doppler radar to provide quantitative precipitation measurements, warn of dangerous conditions, and track storms. It also measures the spread in radial speed, indicating wind turbulence, and digitally processes data for easier interpretation. Terminal Doppler weather radar (TDWR) is specifically designed to detect dangerous microbursts near airports.1
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