Modelling extreme precipitation: an application to two selected rainfall stations in Malaysia

• Main Authors: Mohd Jamil Aida Adha, Mohamad Yunus Rossita, Zubairi Yong Zulina
• Format: Article
• Language: English
• Published: EDP Sciences 2021-01-01
• Series: ITM Web of Conferences
• Online Access: https://www.itm-conferences.org/articles/itmconf/pdf/2021/01/itmconf_icmsa2021_01007.pdf

Statistical models of rainfall have been applied in the understanding of the rainfall past trends, identifying for any anomalies, and making projections of future climate change in Malaysia. Herein, we analyse the rainfall data of 7-year period using the gamma and beta regression models to fit Malaysian extreme precipitation events of two stations, each in the West Coast region and the East Coast region, with extreme precipitation calendar date (in the angular form) as the predictor of the models. While the significance test as the p-value is much less than 0.05, it shows that there is a significant relationship between the climatology response variables. The deviance residual plot will be used to check the goodness of fit for diagnostic checking. The results show the models are useful in highlighting the latest trends and projections of climate change in Malaysia.