On Pyramidal Classification in the Delimitation of Climatic Regions in Catalonia

In this paper we define a new probabilistic model (which we call p-Weibull), considering the Weibull distribution function with an additional parameter, related to the probability of a wet day. We show that from this model and a classification method (for instance the pyramidal one) several climatic regions can be delimited. Each region can be characterized in terms of the same p-Weibull model in order to simulate daily precipitation in each region and any period of time. As an example we get several climatic regions in Catalonia.