WMOD00284

• Applicant: Thompson, J.R., G.W. Wilderson, and D.A. Griffith, North American Weather Consultants
• Sponsor Name: USBR
• Title: Cloud Seeding Data Collection, and Analysis Assoc. with the Colo River Augmentation Demonstration Program
• Prepared For: USBR, Divison of Atmospheric Research
• Prepared By: Thompson, Wilderson, Griffith
• Date: 12/1/1987
• State: AZ
• Weather Modification - Doc Type: Scientific Study

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WS02ao (2-'12)
Bureau or aeelalllallon

TECHNICAL REPORT STANDARD TITLE PAGE

1,2:.;.~oYrR!,,"E~~-~~CE.SS!~N..:,~~~~*~:{" :~ S. RECIPIENT'S CATALOG NO.
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~f..:~~-:~~~~'- ~it_'l"!~~...1~~.~ 'V':;l"'f1.'::~" :':.~~s.~ ,.,;
4. TITLE ~ND SUBTITLE

I. REPORT NO.

S. REPORT DATE
DECEiJDIm

1987

CLOUD SEEDING,DATA COLLECTICX>I, AND ANALYSIS
ASSOCIATED WITH 11-IE COLORADO RIVER AUGMENTATION
DEMJNSTRAT I ON PROGRAM

6. PERFORMING ORGANIZATION CODE

N/A

7. AUTHOR/S)
1'HJMPSa'l, oJ . R., G. W., WI LI<ERSON. AND D. A..

~I.F.FITH

e. PERFORMING ORG~NIZATION
REPORT NO.

S. PERFORMING ORGANIZATION "AME AND ~ODRESS
~TH AMERICAN WEATtER CONSULTANTS
37S1 SOUTH 700 EAST
SALT LAKE CITY,' l1I'AH 84106

10. WORK UNIT NO.
N/A

11. CONTRACT OR GRANT NO.

12. SPONSORING AGENCY NAME AND ADDRESS
BlREAU OF RECLAMAT I ON
D IV. OF. ATMOSPHER I C RESOURCES RESEARCH
BLDG. '67, DENVER FEDERAL CENTER
P. O. BOX 25007, DENVER, COLORADO 80225
15. SUPPLEMENTARY NOTES

S-CR-81-0S090
13. TYPE OF REPORT AND PERIOD
COVERED

FINAL REPORT
MARCH 1 985 - SEPTEMBER 1 987

u. SPONSOA~ AGENCY CODE

N/A

11. ABSTRACT

.
An exploratory program was conducted in the vicinity
of the Mogollon Rim of Arizona during the period from
mid~January to mid-March, 1987. The purpose of the
study was to examine the suitability of winter clouds,
for possible future weather modification activities,
aimed'at enhancing winter precipitation on Arizona's
high plateau region.

Climatological analyses of precipitation and supercooled
liquid water, during storms affecting the Mogollon Rim
are presented. Transport and dispersion studies, utilizing
sulfur. hexafluoride gas as a tracer, were also done
to simulate the release of silver iodide seeding material
from potential ground-based seeding sites.

Results of microphysical and transport and dispersion
studies, conducted previously on the Grand Mesa of western
Colorado during an earlier phase of this contract, are
briefly discussed.

17. KEY WORDS AND DOCUMENT ANAL.YSIS
a. DESCRIPTORS-- CLOUD SEEDING/DATA INVENTan-/MICROWAVE RADIOMETER/PRECIPITA-
TION/PRECIPITATION GAUGES/SUPERCOOLED LIQUID WATER/WEATHER MODIFICATION/
WIND.

b. IDENTIF/ER5-- COLORADO RIVER AUGMENTATION DEMONSTRATION PROGRAM/GRAND MESA,
COLORADO/MOGOLLON RIM, AR I ZONA.
c. COSA TI F ield/G,ouP'

18. DISTRIBUTION STATEMENT
Available from 1he National Technical Information Service. Operations
Division. Sprinrfie/d, Virginia 22151. ,

19. SECURITY C L.ASS
/THIS REPORT)
UNCLASSIFIED
20. SECuRITY CLASS
/THI5 PAul
UNC LASSIF IE 0

21. NO. OF PAGEl

22. PRICE