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<br />INTRODUCTION <br /> <br />~ <br /> <br />This bibliography is a component of the Sierra Ecology Project, a continuing study <br />conducted as part of the SCPP (Sierra Cooperative Pilot Project), the Bureau of <br />Reclamation's research program in cloud seeding for precipitation increases in the Sierra <br />Nevada. The goal of the pilot project is to determine whether cloud seeding can be a reliable <br />alternative for supplementing the region's water resources. The Sierra Ecology Project will <br />help evaluate possible effects upon the region's environment as a result of the 7- to lO-year <br />pilot project. <br />Over the past 30 years, the growth of precipitation management activities has given rise to <br />a vast literature-and a number of bibliographies-focusing primarily on cloud physics, <br />developed of seeding techniques and technology, and analysis of results. To our knowledge, <br />this is the first bibliography devoted entirely to the growing literature concerned with the <br />environmental effects of cloud seeding for precipitation management. <br />The intricate variety of possible environmental responses to cloud seeding and the wide <br />range of disciplines studying those responses have made access, to needed information by <br />scientists and po1icymakers complicated and time-consuming. The importance of <br />environmental impact statements and analyses to the overall development of research and <br />operational cloud seeding projects strengthens the need for ready sources of information. <br />The Office of Atmospheric Resources Management believes this bibliography will be a <br />valuable tool to scientists directly involved in precipitation management projects and to <br />those responsible for compiling and evaluating environmental impact statements for those <br />activities. It should also benefit the planners and managers of land and water utilization, as <br />well as the general public. <br />Although this volume is part of a site-specific analysis program, its contents encompass <br />cloud seeding activities throughout the world. It does, however, emphasize emvironmental <br />responses to winter orographic cloud seeding in which snow, rather than rainfall, is the <br />primary result. Citations relating natural climatic changes to biological, geo10gical, and <br />hydrological processes are included. A few references to inadvertent weather modification, <br />cloud seeding activities directed at fire suppression in forested areas, and the application of <br />cloud seeding techniques to geophysical warfare are also included. Information on fog <br />dispersion and hurricane modification is omitted and references to technical and <br />operational aspects of precipitation management and statistical evaluation techniques are <br />minimized. <br />The Sierra Ecology Project is directed by Dr. James L. Smith, Project Leader, <br />Environmental Hydrology of the Snow Zone, Sierra Nevada and Coast Ranges, California, <br />Pacific Southwest Forest and Range Experiment Station, Forest Service, United States <br />Department of Agriculture, Berkeley, California. Under a Bureau of Reclamation contract, <br />Dr. Smith and Dr. Neil Berg, Research Hydrologist, Forest Service, compiled the 1361 <br />citations included in this volume of the report series. <br /> <br />.. <br /> <br />" <br /> <br />ACKNOWLEDGMENTS <br /> <br />" <br /> <br />The compilers wish to acknowledge the assistance of several Forest Service employees in <br />the preparation of the bibliography. Ms. Linda Lux, Ms. Cecelia Brown, and Mr. David <br />Pereira ably assisted in developing the key term index and tracked down elusive <br />bibliographic information. Mr. Vincent Aitro provided library consultation and support <br />