WMOD00315 ‎(2)‎

• Title: Colorado River Augmentation Demonstration Program - Technical Report January 1983 - March 1985
• Date: 4/1/1986
• Weather Modification - Doc Type: Report

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GROSS-AXIS LIQUID WATER
OROGRAPHIC CLOUDS

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Figure 2:3, - Cross'axis distribution of liqllid water observed in northerly flow cases that
produced local Qrographic clouds, AJI. passes were made at 3.7 km m.s.!.

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CROS.S-AXIS LIQUID WATER
SYNOPTIC SCALE CLOUDINESS

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Figure 2-4, - Cross-axis distribution, of liquid water obser,ved, during. northerly flow cases with
pr~omin;itelv' sYl)()ptlc-scale clouc\iness, Pas,ses- were made at 3,7 and 4.1 km m.s.!.

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Wind roses (not snowt\): we~ constructed from data collected
by sensors at 70, and 16 m a.g.t at the GMO for periods of
SLW production [7]. Whereas the mean GJT 70-kPa wind
vector for this period was 210;0 at 12-.4 mis, the vector
recorded by the 7(}msensor was 1809 at 7.9 mis, a rotation
of 30,0. The, 16-m sensor recorded a vector of 1650 at 5.2' m/'
s, which is perpendicular to.the Mesa axis at the GM0, Some

turning of the winds was observed in the aircraft wind data,
which also. suggested deceleration (damming) on ~he upwind
side and acceleration in the lee [12]. Therefore, a southwest
wind upwind of the Mesa will likely become a southerly' or
even southeasterly wind at lower levels over the Mesa. The
SL W generated in such eases' probably'does' not remain over
the Mesa as long- as figure 2-2 suggests, but rather passes

8