WMOD00376

• Contract/Permit #: 14-06-D-5640
• Project Name: Park Range Atmospheric Water Resources Program
• Title: Park Range Atmospheric Water Resources Program - Phase II - Parts A and B
• Date: 10/6/1967
• Weather Modification - Doc Type: Report

I
I
I
I

Figure No,
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

I
I

I
I
I

I

I

I

I

I
I
I

I
I

20

I

LIST OF FIGURES

Page

Park Range Experimental Area. 5

Artificial Ice Nuclei Generator' Calibration (Performed 12
by Colorado State University)

Plume Mean Direction vs. IlK Wind Vector Direction 16

Plume Mean Direction vs. Mean 100 ft. Level Release 18
Point Wind Direction

Plume Width versus (Emerald Mountain Wind Direction) 19
x (mean wind speed)

Plume Width vs, Emerald Mountain Wind Direction 20
Standard Deviation

Plume Width vs. Eme raId Mountain Wind Speed 21
Standard Deviation

Direction Spectral Density at ,05 cycles/sec. vs. 23
Mean Wind Speed

Typical Stable Spectrum 26

Typical Unstable Spectrum
ZnS- AgI Comparisons - Daisy XLI, 15 Feb, 1967
ZnS-AgI Comparison- Daisy XLI, 15 Feb. 1967

27
28
29
31

Ice Nuclei Concentration with Pulsed Characteristics-
at Rabbit Ear's

Effe ct of an Inve rsion

34
35
36
39

Effect of an Inversion which Broke About 1230

No Pulses Apparent, Wind Velocity Good

Thunderhead Counter Data - 1 cph Pulsed Seeding
21 April 1967

NCAR-Type Ice Nucleus Counter

Frequency Distribution of Background Ice Nuclei
Concentrations During Periods of Snowfall and No
Snowfall

42
44

Simultaneous Plots of Cold Chaluber Temperature
and Ice Nuclei Concentration

46

- vii -