WMOD00409

• Contract/Permit #: 1-07-81-V0175
• Title: State of Montana Activities in the High Plains Cooperative Program: 1981-1983
• Date: 6/30/1983
• State: MT
• Weather Modification - Doc Type: Report

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3. RECIPIENT'S CATALOG NO.

.~.

7-2090 (4-81)
Bure~u ot R.ola.m~'1on

I. REPORT NO.

TECHNICAL REPORT STANDARD TITLE PAGE

State of }funtana Activities in the High Plains
Cooperative Program: 1981-1983

5. REPORT DATE

June 30, 1983
6. PERFORMING ORGANIZATION CODE

4. TITLE AND SUBTITLE

7. AUTHOR(SJ

8. PERFORMING ORGANIZATION
REPORT NO.

Larry Holman and Gerhard M. Knudsen, et al.

9. PERFORMING ORGANIZATION NAME AND ADDRESS

10. WORK UNIT NO.

Montana Department of Natural Resources and
Conservation
~1ater Resources Division
32 South Ewing, Helena, MT 59620
!2: SPONSORING AGENCY NAME AND ADDRESS
Bureau of Reclamation (USDI)
Office of Atmospheric Resources Research
P.O. Box 25007, DFC
Denver, CO 80225

15. SUPPI.EMENTARY.NOTES

11. CONTRACT OR GRANT NO.
1-07-81-V0175

13. TYPE OF REPORT AND PERIOD
COVERED

Final Report 1981-1983

14. SPONSORING AGENCY CODE
T)/'FiR

16. ABSTRACT 'Eff f h S f M . h '1il C' f
orts 0 t e tate 0 ontana 1n t e r es 1ty area 0 eastern
}funtana which pertain to the High Plains Cooperative Program (HIPLEX) of
Project Skywater are reported. Activities dealing with meteorological
aspects of the program included: (1) establishment and o~eration of a
large mesonetwork of PROBE weather stations; (2) acquisition and computer
filing of PROBE mesonet data; (3) evaluation of PROBE data quality and
implementation of calibratiop data; and (4) conduct of preliminary PROBE
analysis studies.

Associated impact assessment analyses were continued which were designed to
estimate the potential effects of warm season weather modification on
major ecosystems of the Northern High Plains. Using simulated rainfall
treatment data, assessments were continued in: (1) grassland yield and
quality responses; (2) forage quality; (3) invasion of pest species and
consumers; (4) effects of discontinuance; (5) soil erosion; and (6) species
composition.

Activities to terminate participation in HIPLEX were conducted.

17. KEY WORDS AND DOCUMENT ANALYSIS
a. DESCRIPTORSu
HIPLEX, PROBE, CCOPE, weather modification, mesonet, predictors,
covariates, streamlines, mesoscale weather data, rangeland vegetation,
vegetation-moisture relations, vegetation sampling, water supplements,
range production, consumers, nutrients, species composition.
b. IDENTIF IER5u

c. COSATI Field/Group

COWRR:

SRIM:

19, SECURITY Cl.ASS 12'. NO, OF PAGES
(THIS REPORT)
UNCLASSIFIED I
20. SECURITY CLASS 22. PRICE
(THIS PAGE)
UNCLASSIFIED

IS. DISTRIBUTION STATEMENT

Available from the National Technical Information Service. Operations
Division, 5285 Port Royal Road, Springfield, Virginia 22/61.