DESIGN OF A PROGRAM OF A RANDOMIZED SEEDING OF OROGRAPHIC CUMULI

Abstract

From studies of the properties of convective clouds over the mountains of southeastern Arizona, it was found that many failed to precipitate even though they were supercooled and were quite deep. A carefully controlled cloud-seeding program was designed in 1957 and has been in progress for three years. This article discusses the experimental design and the observational techniques and gives some preliminary results. Since the research has two more years to run, statistical evaluations are not given in this article.