Four statistical models for wet-spell analysis
Keywords:Bernoulli trials, Cochran's formula, Logarithmic series distribution, Negative binomial distribution, Poisson distribution, Run length, Truncated distribution, Wet spell
Wet-spell analysis is an important part of rainfall analysis. The distribution of the length of wet-spells provides useful information on the temporal distribution of rainfall. This distribution has traditionally been modelled through different probability distributions. Here we compare four such models, namely, Cochran's model, truncated Poisson distribution, truncated negative binomial distribution, and logarithmic series distribution. These comparisons are accomplished with help of application to five rainguage stations in India.
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