APPLICATION OF A SPACE-TIME STOCHASTIC-MODEL FOR DAILY PRECIPITATION USING ATMOSPHERIC CIRCULATION PATTERNS

Space-time series of daily precipitation amount conditioned on daily c irculation pattern (CP) types are calculated. A stochastic hydroclimat ological model is used to define daily precipitation under the climate of eastern Nebraska. Principal component analysis and k means method result in nine CP types in west central United States on the basis of 40 years of data- Both the probability and the amount of daily precipi tation are strongly related to CP types. The approach can be used to p redict the regional or local hydrological effect of climate change.