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THE NERC MST RADAR FACILITY AT ABERYSTWYTH
THE SIGNATURE OF PRECIPITATION OBSERVED BY MST RADAR
Plot of radar return signal power

Unlike weather radars, such as the 3 GHz Doppler-Polarisation Radar at the Chilbolton Facility, MST radars are not particularly sensitive to hydrometeors; the radar return signals are dominated by the "clear-air" returns. However, an effect of rain-fall can be to `wash out' the high radar return signal power which is characteristic of the humidity field. The rain fall rate shown above is measured by the climate data logger at the radar site. The small scale structure seen between 0700 and 1000 UT in the example below suggests that (in this particular case) the radar may be observing rain bands passing over.

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Clear-air radar return mechanisms
The signature of humidity fields observed by MST Radar
Page maintained by David Hooper
Last updated 16th August 2002