Retrieving High Resolution 3-D Wind Vector Fields from Operational Radar Networks - Doppler Radar Observations: Weather Radar, Wind Profiler, Ionospheric Radar, and Other Advanced Applications - page 215

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Fig. 5. 3-hourly multiple-Doppler analysis of radar data over France starting at 03 UTC on 24
January 2009. Left panel shows reflectivity (dBZ) superimposed on horizontal wind vector
at 2.5 km AMSL. Right panel shows horizontal wind speed (m/s). One every sixth vector is
plotted. Frontal boundaries deduced from surface analysis are shown in (a) and (c).