Journal article

The role of climate variability in Australian drought

Andrew D King, Andy J Pitman, Benjamin J Henley, Anna M Ukkola, Josephine R Brown



The Poisson regression model remains an important tool in the econometric analysis of count data. In a pioneering contribution to the econometric analysis of such models, Lung-Fei Lee presented a specification test for a Poisson model against a broad class of discrete distributions sometimes called the Katz family. Two members of this alternative class are the binomial and negative binomial distributions, which are commonly used with count data to allow for under-and over-dispersion, respectively. In this paper we explore the structure of other distributions within the class and their suitability as alternatives to the Poisson model. Potential difficulties with the Katz likelihood leads us t..

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Awarded by Australian Research Council

Awarded by Australian Research Council Linkage Project

Funding Acknowledgements

We thank the Bureau of Meteorology, the Bureau of Rural Sciences and CSIRO for providing the Australian Water Availability Project data. Several authors received funding through the Australian Research Council: A.D.K. (DE180100638), and A.J.P. and A.M.U. (CE170100023). B.J.H. received funding from an Australian Research Council Linkage Project (LP150100062), which was co-funded by Melbourne Water and the Victorian Department of Environment, Land, Water and Planning, and supported by the Australian Bureau of Meteorology.