A statistical distribution for modelling rainfall with promising application in crop science

S M Lennox; Peter K Dunn; B D Power; P Devoil

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Conference poster

A statistical distribution for modelling rainfall with promising application in crop science

S M Lennox, Peter K Dunn, B D Power and P Devoil

New directions for a diverse planet: Proceedings of the 4th International Crop Science Congress

International Crop Science Congress (4ICSC), 4th (Brisbane, Australia, 2004)

Regional Institute Ltd.

2004

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Abstract

Crop and Pasture Production

Tweedie distribution

Generalized Linear Model (GLM)

precipitation

crop model simulation

The finding of an accurate and reliable rainfall model has been the point of much discussion in previous research and has promising input applications in areas such as crop growth, hydrological systems and simulation studies. In the past it has been necessary to model rainfall as two separate processes: rainfall occurrence (whether the period is dry/wet) and rainfall amounts (rainfall amount observed during a wet period). As the rainfall process involves both discrete (rainfall = 0 mm) and continuous parts (rainfall >0 mm), two separate models have previously been fitted and the information from the two models combined in order to provide a summary of the rainfall model. The Tweedie distribution however is able to combine both aspects to provide one complete rainfall process. This results in a more accurate, reliable and practical model that can then be incorporated into other areas such as crop growth systems.

Details

Title: A statistical distribution for modelling rainfall with promising application in crop science
Authors: S M Lennox (Author) - Queensland Department of Primary Industries and Fisheries
Peter K Dunn (Author) - University of Southern Queensland
B D Power (Author) - Queensland Department of Primary Industries & Fisheries
P Devoil (Author) - Queensland Department of Primary Industries & Fisheries
Publication details: New directions for a diverse planet: Proceedings of the 4th International Crop Science Congress
Conference details: International Crop Science Congress (4ICSC), 4th (Brisbane, Australia, 2004)
Publisher: Regional Institute Ltd.
Date published: 2004
Organisation Unit: University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy; School of Science, Technology and Engineering
Language: English
Record Identifier: 99449424802621
Output Type: Conference poster

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