PROJECT 1 - DEVELOPMENT OF INTENSITY FREQUENCY DURATION INFORMATION ACROSS AUSTRALIA
Detailed IFD relationships across the country were last investigated prior to the publication of the 1987 edition of Australian Rainfall and Runoff. These design IFD relationships across the country were determined using the rainfall data recorded up to 1983. For the analysis it was assumed that the statistical distribution for the developed series was a Log Pearson Type III, skew of the record was a regional feature and could be applied to all durations and frequencies, the data sample at each location was representative of the long-term conditions at that station, and climatic trends had negligible effect on the intensities.
Since these data records were analysed, techniques for dissemination of information have changed, the length of data record has increased, new techniques for estimation of the statistical properties of the rainfall have been developed, and the needs of the profession for IFD related information have changed.
Project Start: Stage 1 2008
Project Finish: Mid 2014
Contractor: Bureau of Meteorology
HWRS 2012 Conference Papers Relating to Project 1:Quality Controlling Daily Read Rainfall Data for the Intensity-Frequency-Duration (IFD) Revision ProjectApplication of Bayesian GLSR to estimate sub daily rainfall parameters for the IFD Revision ProjectRegionalisation of rainfall statistics for the IFD Revision ProjectGridding of Design Rainfall Parameters for the IFD Revision Project for AustraliaComparison of Scaling Methods for Short-Duration Rainfall Frequency AnalysisFind out more -Download the Project 1 Flyer