Doppler radar
Doppler radar A device that measures the Doppler shift in a radar beam reflected from water droplets on either side of a rotating mesocyclone or tornado. Angular velocity can be calculated from the extent of the red shift on one side and blue shift on the other.
Doppler Radar
DOPPLER RADAR
The first weather radar units were taken from old aircraft and adapted for use in forecast offices across the United States. The old aviation radars were looking for other airplanes. The forecast offices were concerned with smaller targets: raindrops or snowflakes. Raindrops are "seen" by radar when the energy from the radar travels through the air and hits a target. The energy then bounces back to the radar unit and displays where the moving target is located. Doppler Radar takes this one step further by "seeing" the rain being blown toward and away from the radar unit. This wind turbulence is then displayed on screen, making it appear that Doppler Radar can "see" and show us the wind.
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Shift , shift / shift/ • v. move or cause to move from one place to another, esp. over a small distance: [tr.] I shift the weight back to the other leg | [in… blue shift , blue shift In astronomy, an effect in which the lines in the spectrum of a celestial object are displaced towards the blue end of the spectrum. It re… Red Shift , Skip to main content
red shift
red shift or redshift, in astronomy, the systematic displacement of individual lines in the spectrum of a celestial ob… bullseye , bullseye See PEMPHERIDAE; PRIACANTHIDAE.
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Doppler radar