Fitting Daily Rainfall Amount in Peninsular Malaysia Using Several Types of Exponential Distributions
Fitting Daily Rainfall Amount in Peninsular Malaysia Using Several Types of Exponential Distributions
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发表时间：
2007
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通讯作者：
S. Jamaludin;A. Jemain
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作者：
S. Jamaludin;A. Jemain
本文利用21 ~ 35年不同时期的指数分布，对马来西亚南部Peni地区降雨量的拟合进行了统计研究。提出了混合伽玛、混合威布尔和混合指数及其单一分布，并对其进行了检验，以确定马来西亚半岛多个地区的日降雨量i的最佳模型。所选择的模型将根据某些拟合优度（GOF）测试产生的最小误差来确定。结果表明，混合威布尔模型在模拟降雨量方面优于单一威布尔模型，其中混合威布尔模型被认为是最适合马来西亚Peni岛大多数站点的模型。然而，这些结果在受地理、地形和气候变化强烈影响的气象站之间是不同的。
This paper presents a s tatistical study on fitting distribution of rainfall amount in Peni nsular Malaysia u sing several types of exponential distributions for per iods from 21 to 35 years. The mixed gamma, m ixed weibull and mixed exponential are proposed and tested together w ith their sin gle distributions to identify the optimal model for d aily rainfall amount i n several ra in g auge stations in Peninsular Malaysia. The selected model will be determined based on the minimum e rror produced by some c riteria of goodness of-fit (GOF) tests. The results indi cated t hat the mixture di stributions are bet ter than the single distributions in modeling rainfall amount where the mixed weibull is identified as t he most appropriate model for t he majority of sites in Peni nsular Malaysia. These r esults however are v aried between the rai n gauge stations which are strongly influenced by their geograp hical, topographical and climatic c hanges.