Using Historical Data to Evaluate Two Large-area Operational Seeding Projects

Chin-Fei Hsu, Stanley A. Changnon


Two large-area operational seeding projects conducted in the Great Plains were evaluated statistically to determine if any seeding effects could be detected.  Historical data were used in the evaluation, and statistiscal tests using permutational procedures were applied to the data in obtaining the significances of estimated seeding effects.  The findings indicate a singificant rainfall changes in the Moddy Road project and the other project in northwestern Oklahoma.

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