Title of article :
Fitting the Best-fit Distribution for the Hourly Rainfall Amount in the Wilayah Persekutuan
Author/Authors :
FADIDLAH, Y. Universiti Teknologi Malaysia - Faculty of Science - Department of Mathematics, Malaysia , ZALINA, MD. UTM - College Science and Technology, Malaysia , NGUYEN, V-T-V. McGill University, Canada , SUHAILA, S. Universiti Teknologi Malaysia - Faculty of Science - Department of Mathematics, Malaysia , ZULKIFLI, Y. Universiti Teknologi Malaysia - Institute of Environmental and Water Resources Management, Malaysia
Abstract :
Abstract. In determining the best-fit model for the hourly rainfall amounts for the twelve stations in the Wilayah Persekutuan, four distributions namely, the Exponential, Gamma, Weibull and Mixed- Exponential were used. Parameters for each distribution were estimated using the maximum likelihood method. The best-fit model was chosen based upon the minimum error produced by the goodness-of- fit tests used in this study. The tests were justified further by the exceedance probability plot. The Mixed-Exponential was found to be the most appropriate distribution in describing the hourly rainfall amounts. From the parameter estimates for the Mixed-Exponential distribution, it could be implied that most of the hourly rainfall amount recorded were received from the heavy rainfall even though there was a high occurrences of light rainfall.
Keywords :
Hourly rainfall amount , goodness , of , fit test , exceedance probability , maximum likelihood
Journal title :
Jurnal Teknologi :C
Journal title :
Jurnal Teknologi :C
