DOPPLER RADAR AND WEATHER OBSERVATIONS
Richard J. Doviak and Dusan S. Zrnic

Color Plate 1

a

Doppler field for the radar operating with uniform PRT and no range corrections applied.
b

Doppler field for the radar operating with uniform PRT and no range corrections applied, but the velocity field is obtained 80 s later, when an interlaced PRT was used and range dealiased adjustments had been applied.

Correction of range-ambiguous Doppler velocity fields of storms.

(a) Doppler field for the radar operating with uniform PRT and no range corrections applied. Red (green) colored ares are radial velocities away from (toward) the radar. The shades of color from dark to light correspond to median velocities (in m s-1) indicated to the right of the color bar. Range circles are at 100-km intervals. The light-blue color tags echoes from ground objects and airborne scatterers having radial velocities between -3 and 3 m s-1. larger image

(b) Same as (a) but the velocity field is obtained 80 s later, when an interlaced PRT was used and range dealiased adjustments had been applied. The purple color (labeled "RF" on the color bar) denotes regions where range overlaid echoes had powers within 10 dB. larger image

c

Doppler field with no corrections for velocity ambiguities.
d

Doppler field with no corrections for velocity ambiguities, but velocity dealiasing corrections have been applied.

Dealiasing of velocity ambiguities in a strong density current on 27 May 1982 in central Oklahoma (from Eilts and Smith, 1990)

(c) Doppler field with no corrections for velocity ambiguities. Color bar shows the velocity categories (in m s-1). Range-arc labels are in kilometers. All color categories (i.e., measured Doppler velocities) must lie between νa=±24.5 m s-1. larger image

(d) Same as (c) but velocity dealiasing corrections have been applied. larger image

 

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