Publications Search - Publication Abstract, Illinois State Water Survey

Publication Abstract

Design of an Experiment to Suppress Hail in Illinois Changnon, Stanley A., Jr., and Griffith M. Morgan, Jr., 1976  Illinois State Water Survey, Champaign, IL,  ISWS B-61    Full Text Available
This report presents an optimum design for a hail suppression experiment in Illinois. It is a final report for the 2 -year project DESH (Design of an Experiment to Suppress Hail) funded by the NSF-RANN and the State of Illinois. The design is based on 9 years of hail research geared to hail modification planning. DESH studies of 3-cm and 10-cm radars, surface hail measurements, weather analysis and objective forecasting techniques, aircraft measurements of cloud properties, seeding technologies, and evaluation techniques are reviewed in detail. The hail suppression experiment design includes the modification hypothesis and related seeding technologies, the statistical-physical design and evaluation, operational requirements, and impact monitoring and public interaction efforts. The advisability of conducting such an experiment at this time is discussed.


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