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<br />0025 4'~ <br /> <br />CONTRACTOR: EG&G, Inc., Albuquerque, New Mexico <br />CONTRACT NO. 14-06-0-6963 <br />PRINCIPAL INVESTIGATOR: David O. Zopf <br />PERIOD: July 1, 1974, to November 30, 1976 <br />FUNDING: FY75 $453,084 <br />FY76 - $ 6,022 <br />1.Q. - $ 33,660 <br /> <br />EG&G was awarded this contract to conduct randomized seedin9 opera- <br />tions for the five CRBPP winter research seasons. To accomplish <br />this task, EG&G established a complete weather forecasting and <br />analysis center in Durango, Colorado. Here, onsite data and infor- <br />mation from national circuits were evaluated to assemble a meteorolog- <br />ical diagnosis of storm systems affecting the San Juan study area. <br />In addition to the CRBPP data network, information was provided by <br />the SCS (Soil Conservation Service), National Weather Service, and <br />Geological Survey data collection systems. <br /> <br />Two types of ground cloud seeding generators were used in the pro- <br />ject, a remote control model manufactured by North American Weather <br />Consultants and a manually operated model designed especially for the <br />project by EG&G. A tot al of 35 generators were used in the two <br />project subareas. Data were collected during 147 experimental <br />periods. <br /> <br />; <br />t <br />, <br />. <br />, <br />t <br /> <br />I <br /> <br />EG&G's evaluation of seeding results pinpointed four cloud systems <br />that responded favorably to ground-based seeding, three orographic <br />systems, and one deep g~neral cloud type. Other cloud types that <br />contribute positively to the precipitation regime under more restric- <br />tive meteorological circumstances were also identified. An interest- <br />ing facet of the evaluation was the indicated potential for continu- <br />ous seeding during many storm events even though the cloud types were <br />continually changing. This concept could alleviate forecasting <br />burdens in future programs. The final report emphasizes the value of <br />comprehensive public involvement during weather modification <br />activities. <br /> <br />I <br /> <br />CONTRACTOR: Colorado State University, Fort Collins, Colorado <br />CONTRACT NO. 14-06-0-7052 <br />PRINCIPAL INVESTIGATORS: Dr. H. L. Teller and Dr. H. W. Steinhoff <br />PERIOD: July 1, 1974, to June 30, 1976 <br />FUNDING: FY75 - $110,000 <br />FY76 - $ 50,000 <br /> <br />The "San Juan Ecology Project" was initiated in. 1970. A consortium <br />of Colorado State University, University of Colorado, and Fort Lewis <br />College scientists and graduate students studied ecological processes <br /> <br />11-7 <br />