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PRIMUS
R
660 Digital Weather Radar System
A28–1146–111
REV 2 5-11
Radar Facts
D Convective thunderstorms become much less reflective above the
freezing level. This reflectivity decreases gradually over the first
5000 to 10,000 feet above the freezing level, as shown in figure
5–10.
AD–35696@
FREEZING LEVEL
Convective Thunderstorms
Figure 5–10
The aircraft in figure 5–10 has a clear radar indication of the
thunderstorm, probably with a shadow in the ground returns behind
it.
D If the tilt angle shown in figure 5–11 is not altered, the thunderstorm
appears to weaken as the aircraft approaches it.
AD–35697@
FREEZING LEVEL
Unaltered Tilt
Figure 5–11