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<br />Ground Based Nighttime seeding, Extra Area Effects, and Opportunity Recog- <br />nition. A great deal of effort will be made to colll~ct data during the <br />1983-84 field season to provide data sets that can be used to answer criti- <br />cal questions in each task. The results of this work will be a series of <br />appendixes to accompany the design document. <br /> <br />e <br /> <br />A major evaluation effort will be started in support of a randomized <br />experiment to be conducted with SMUD. SMUD will use procedures, as they <br />have in the past, to conduct randomized seeding in their target area. <br />Other data, including radar," ranwinsonde, and precipitation information, <br />will be analyzed by SCPP scientists to help develop better evaluation <br />methods and possible response variables. <br /> <br />F. ENVIRONMENTAL INVESTIGATIONS <br /> <br />The U.S. Forest Service's Pacific Southwest Forest and Range Experiment <br />Station in Berkeley, California, through an interagency agreement with the <br />Bureau of Reclamation, is conducting the SEP, a study of the possible <br />effects of precipitation augmentation upon snowpacks clOd ecological com- <br />ponents in the central Sierra Nevada. Dr. Neil Berg "is SEP Coordinator. <br /> <br />e <br /> <br />1. Snow Profil es and Temperature Data from an Altitudinal Transect <br /> <br />Further work proposed for this season includes weekly snow profiles to <br />be taken from six sites located at about every 150 m (500 ft) on a <br />transect along Interstate 80 from Blue Canyon to the crest of the Sierra <br />Nevada. Where possible, these sites will be co10cated with existing <br />Bureau precipitation gages. Temperature and relative humidity data will <br />be obtained at three sites. <br /> <br />e <br /> <br />1-26 <br />