Air and precipitation particle motions within a cold front measured by the MU VHF radar

The VHF Doppler radar at Shigaraki, Japan, is shown to be capable of investigating mesoscale meteorological phenomena in the troposphere. Three dimensional velocities of air and precipitation particles in a cold frontal system are measured directly. The time and altitude resolution obtained with this system are unequalled by other conventional instruments. A strong and deep updraft associated with the frontal passage is observed extending above 10 km. Enhanced echoes accompanying the updraft are also detected with a meteorological radar.

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