Numerical Simulation for Optimum Seeding Operation Using Liquid Carbon Dioxide

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In order to effectively convert a large amount of cloud water into precipitation, LOLEPSHIN (Low Level Penetration Seeding of Homogeneous Ice Nucleant) using liquid carbon dioxide (LC) was suggested. In this paper, consideration of an optimum seeding rate for a successful seeding operation was done using a time-dependent dynamic and microphysical thermal model. The results of the model indicated that an optimum seeding rate should be determined on the basis of consuming efficiency and ice particles properties as well as the detection of radar echo measuring the cloud thickness. Therefore, application of the simplified microphysical and dynamic formulation to a cloud seeding operation is required for providing useful information to judge if a seeding operation leads to a significant result.

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