Copula based multisite model for daily precipitation simulation

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Abstract

From the point of view of multisite stochastic daily rainfall modelling, there are two new ideas introduced in this paper. The first is the use of asymmetrical copulas to model the spatial interdependence structure of the rainfall amounts together with the rainfall occurrences in one relationship. The second is in the evaluation of the (necessary but often ignored) congregating behaviour of the higher values of simulated rainfall; this evaluation is performed by calculating the entropy of the observations at all the near equilateral triangles that can be formed from the sequences at the gauge sites, as a function of their mutual separation distance. It turns out that the model captures the qualities desired and offers a fresh approach to a relatively mature problem in hydrometeorology.

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Bárdossy, A., & Pegram, G. G. S. (2009). Copula based multisite model for daily precipitation simulation. Hydrology and Earth System Sciences, 13(12), 2299–2314. https://doi.org/10.5194/hess-13-2299-2009

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