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<br />00255~ <br /> <br />a few other insects are sensitive to weather patterns and can compete <br />effectively with cattle and sheep for forage on the High Plains. No <br />outbreaks in pest species were observed after 2 years of increased <br />moisture. Insect consumption may be less in wet than dry plots. <br />However, since pest outbreaks tend to grow logarithmically, several <br />more years of data will be required to derive firm conclusions. <br /> <br />A completed study has correlated 40 years of rainfall and temperature <br />data at Mildred, Montana, with base area measurements of native <br />range 1 and veget at i on in 1936, 1938, 1963, and 1975 at fi ve permanent <br />sites. This study showed significantly more April and June rainfall <br />during the 1963-75 period than during the 1949-62 period. Forage <br />yield almost doubled during the 13-year "wet" period between 1963 <br />and 1975 which naturally experienced about 23 percent more rainfall <br />than the previous 13 years. <br /> <br />CONTRACTOR: University of North Dakota, Grand Forks, North Dakota <br />CONTRACT NO. 14-06-0-7581 <br />PRINCIPAL INVESTIGATOR: John D. Odegard <br />PERIOD: September 1,1974 - Continuing <br />FUNDING: FY75 - $106,611 <br />FY76 - $138,322 <br />T.Q. - $ 96,305 <br />FY77 - $447,868 <br />FY78 - $463,379 <br /> <br />Although the contract has a number of objectives, the major portion <br />of the total contract effort has been devoted to developing computer <br />programs to edit, process, and analyze digital radar data from HIPLEX <br />and SCPP (Sierra Cooperative Pilot Project) on both Reclamation and <br />UNO (University of North Dakota) computer systems. To date, over <br />3,000 raw data tapes have been edited into approximately 840 archived <br />files, with permanent copies retained by both UNO and Reclamation. <br />Over 80 percent of the data has been processed through basic analysis <br />programs. The archived data are used extensively by Project Skywater <br />and its contractors. <br /> <br />A major contract effort is to provide scientific personnel and <br />equipment in support of the Miles City HIPLEX site. The contractor <br />furni shes and operates a research radar unit and rawi nsondes; sup- <br />plies meteorological monitoring capabilities for downwind research; <br />and provides recorded digital radar tapes. Extensive analyses of <br />rawinsonde data analysis, first-echo radar statistics, general <br />climatological analysis, statistical representations of radar param- <br />eters, and radar/satellite intercomparisons were undertaken. The <br />contractor has also provided statistical comparisons of the UNO and <br /> <br />IlI-12 <br />