Abstract
Statistical models of rainfall activity can be useful for analyzing and improving urban drainage systems. Cowpertwait developed a statistical rainfall model in which storms originate randomly in space and time according to a Poisson process. Each storm has a random radius, lifetime, and intensity. He adjusted model parameters to fit the model to data taken from sites across Rome, Italy, and the surrounding region. To validate the model, he compared the distribution of observed annual maxima with the extreme values generated by the model and found good agreement, indicating that the model would be useful for urban drainage projects in Rome and the surrounding region. The model is flexible and could be adjusted for use in other regions. (Water Resources Research, doi:10.1029/2010WR009728, 2010)
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