Reanalysis of “Generalized Criteria for Seeding Winter Orographic Clouds”

Abstract

A serious systematic bias of the data set used in the original Vardiman and Moore (1978) work was detected while performing a continuing investigation of seeding ?windows.? This bias occurred because a large number of no-seed cases were used in the Climax I and Climax II data sets that were not within the original strict randomization. Removal of this systematic bias produced a significant change in both the overall and stratified results. The nature of the bias and its impact on the original results are discussed.