Knowledge Based Classification of Circulation Patterns for Stochastic Precipitation Modeling

A fuzzy rule-based methodology is applied to the problem of classifying daily atmospheric circulation patterns (CP). The subjective classification of European CP’s given in Hess and Brezowsky (1969) provides a basis for constructing the rules. The purpose of the approach is to produce a classification that can be used to simulate local precipitation on the basis of the 700 hPa pressure field rather than reproduce the existing subjective classification.

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