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<br />- Directing cloud seeding operations. <br /> <br />Observation tools (radar, satellite, aircraft, precipitation <br />gauges, streamflow gauges, etc.). <br /> <br />Data management including quality control, processing and <br />archival procedures. <br /> <br />- Data analysis techniques and procedures. <br /> <br />- Physical-statistical procedures in evaluating precipitation <br />enhancement projects including monitoring the chain of physi- <br />ca 1 events, randomi zed and non-randomi zed techni ques, and para- <br />metric and non-parametric tests. <br /> <br />- Sunrnary of the results of the design o"F a demonstration pro- <br />ject for Thailand. <br /> <br />o Decisionmaking factors <br /> <br />- Role of precipitation enhancement in water resources, and agri- <br />cultural management. <br /> <br />- Socioeconomic impacts. <br /> <br />- Benefit-cost analyses <br /> <br />- Summary of the results of the Thailand pilot agricultural <br />drought warning study. <br /> <br />- Environmental considerations. <br /> <br />.. <br /> <br />Minimization of risks including the role of suspension cri- <br />teria, downwind effects, and potential negative effects. <br /> <br />- Research and development management concepts and practices. <br /> <br />3. Scientific evaluation of potential rainmaking methodologies <br /> <br />Computer simulations of cloud development and precipitation evolution can <br />be valuable tools for quantitatively testing and evaluating potential tech- <br />niques for seeding clouds to enhance rainfall. While such computer tests <br />cannot take the place of actual field experimentation, they can be used to <br />optimize the field experiments by highlighting which of a number of <br />possible seeding strategies, seeding materials or c:ombinations of seeding <br />materials, are likely to have the greatest success., Numerical cloud models <br />can, in short, be the vehicle for developing the conceptual model(s) to be <br />tested in a demonstration project. <br /> <br />". <br /> <br />\ There are many different kinds of computer models that can be used to exam- <br />ine clouds and precipitation. Due to computer limitations no single model <br />exists that is capable of answering all the questions that need to be <br /> <br />49 <br />