WMOD00406

• Contract/Permit #: 7-07-83-V0001
• Title: Turbulant Diffusion Studies of Winter Storms Over the Sierra Nevada Mountains
• Date: 12/1/1981
• Weather Modification - Doc Type: Report

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6.2.1

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6.2.2

i.

xl

plu~e dimensions for both experiments on 3 March 1980

eas~ study. . . . . . . . . . . . . . . . . . . . . .

141

Aircraft sounding on 21 March 1979 during climbout.

The' temperature (T> and dewpoint (DT) are plotted on a

ske~T, log-P diagram. Potential temperature (8) and

equ!ivalent potential temperature (8e) are also illu-

s tra ted . . . . . . . . . . . . . . .

144

Analog traces on 21 March 1979 from 1533 to 1535. Ver-

tical velocity (WW), 2D-C ice crystal concentrations,

FSSr liquid water content (FSP-LW), ice nuclei concen-

tra't ion (I. N. C. ), and ID-C ice crys ta 1 concen tra t ion

presen ted . . . .

146

. . . . . . . . . . . . . . . .

6.2.3 Po "'fe r spectra of the longi tud ina 1 wind component, for
'. eac!h of the three seeding exper imen ts on 21 March 1979
cas'e stud y . . . . . . . . . . . . . 150

6.2.4

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6.2.5

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6.3.1

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6.3.2

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Ge~eral functional relation of the longitudinal diffu-
sidn plume size versus' time, for the three experiments

on 21 March 1979 case study. . . . . . . . . . . . . .. 151

A ~omparison between the calculated and observed
se~ded plume dimensions, for the three experiments on

21 March 1979 case study

152

Aircraft sounding (a) and hodograph (b), on 20
Fe~ruary 1979 case study. Temnperature and dewpoint
ar~ plotted on a skew-T, log-P diagram. Potential and
eq~ivalent potential temperature are also shown. . 157

A plan view of the VA's flight track and the succes-