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Modelling and Simulation of Volumetric Rainfall for a Catchment in the Murray-Darling Basin

Boland, J. W. and Howlett, P. G. and Piantadosi, J. and Roslinazairimah, Zakaria (2016) Modelling and Simulation of Volumetric Rainfall for a Catchment in the Murray-Darling Basin. ANZIAM Journal. pp. 1-24. ISSN 1445-8735 (In Press)

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Abstract

We discuss modelling and simulation of volumetric rainfall in a catchment of the Murray–Darling Basin – an important food production region in Australia that was seriously affected by a recent prolonged drought. Consequently, there has been sustained interest in development of improved water management policies. In order to model accumulated volumetric catchment rainfall over a fixed time period, it is necessary to sum weighted rainfall depths at representative sites within each sub-catchment. Since sub-catchment rainfall may be highly correlated, the use of a Gamma distribution to model rainfall at each site means that catchment rainfall is expressed as a sum of correlated Gamma random variables. We compare four different models and conclude that a joint probability distribution for catchment rainfall constructed by using a copula of maximum entropy is the most effective.

Item Type: Article
Uncontrolled Keywords: Rainfall modelling; correlated Gamma distributions; copulas of maximum entropy
Subjects: G Geography. Anthropology. Recreation > GB Physical geography
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Noorul Farina Arifin
Date Deposited: 18 Oct 2016 05:07
Last Modified: 03 Oct 2018 05:51
URI: http://umpir.ump.edu.my/id/eprint/14837
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