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GENERATION OF DAILY PRECIPITATION OVER AN AREA 1
Author(s) -
Richardson Clarence
Publication year - 1978
Publication title -
jawra journal of the american water resources association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.957
H-Index - 105
eISSN - 1752-1688
pISSN - 1093-474X
DOI - 10.1111/j.1752-1688.1978.tb02244.x
Subject(s) - precipitation , univariate , multivariate statistics , environmental science , mathematics , distribution (mathematics) , sample (material) , statistics , meteorology , thermodynamics , physics , mathematical analysis
A model was developed of the periodic‐stochastic structure of daily precipitation over an area. The model is based ona multivariate normal distribution. The square roots of daily precipitation at a point were found to approximate a sample from a univariate normal distribution that had been truncated at zero. The zero daily precipitation amounts were considered negative amounts of unknown quantity. The multivariate normal distribution was used to describe the variation of daily precipitation over an area. The periodic fluctuations of the model parameters were described with Fourier series. The model was tested using data from two areas of different precipitation characteristics. Data generated with the model contained many of the statistical characteristics observed in the historical data.