A preliminary study on drought events in Peninsular Malaysia

Wan Zawiah Wan Zin @ Wan Ibrahim, Siti Aishah Nahrawi, Abdul Aziz Jemain, Marina Zahari

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this research, the Standard Precipitation Index (SPI) is used to represent the dry condition in Peninsular Malaysia. To do this, data of monthly rainfall from 75 stations in Peninsular Malaysia is used to obtain the SPI values at scale one. From the SPI values, two drought characteristics that are commonly used to represent the dry condition in an area that is the duration and severity of a drought period are identified and their respective values calculated for every station. Spatial mappings are then used to identify areas which are more likely to be affected by longer and more severe drought condition from the results. As the two drought characteristics may be correlated with each other, the joint distribution of severity and duration of dry condition is considered. Bivariate copula model is used and five copula models were tested, namely, the Gumbel-Hougard, Clayton, Frank, Joe and Galambos copulas. The copula model, which best represents the relationship between severity and duration, is determined using Akaike information criterion. The results showed that the Joe and Clayton copulas are well-fitted by close to 60% of the stations under study. Based on the results on the most appropriate copula-based joint distribution for each station, some bivariate probabilistic properties of droughts can then be calculated, which will be continued in future research.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics Inc.
Pages1217-1225
Number of pages9
Volume1602
ISBN (Print)9780735412361
DOIs
Publication statusPublished - 2014
Event3rd International Conference on Mathematical Sciences, ICMS 2013 - Kuala Lumpur
Duration: 17 Dec 201319 Dec 2013

Other

Other3rd International Conference on Mathematical Sciences, ICMS 2013
CityKuala Lumpur
Period17/12/1319/12/13

Fingerprint

Malaysia
drought
stations

Keywords

  • Copula
  • Peninsular Malaysia
  • Standard Precipitation Index

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Wan Zin @ Wan Ibrahim, W. Z., Nahrawi, S. A., Jemain, A. A., & Zahari, M. (2014). A preliminary study on drought events in Peninsular Malaysia. In AIP Conference Proceedings (Vol. 1602, pp. 1217-1225). American Institute of Physics Inc.. https://doi.org/10.1063/1.4882639

A preliminary study on drought events in Peninsular Malaysia. / Wan Zin @ Wan Ibrahim, Wan Zawiah; Nahrawi, Siti Aishah; Jemain, Abdul Aziz; Zahari, Marina.

AIP Conference Proceedings. Vol. 1602 American Institute of Physics Inc., 2014. p. 1217-1225.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wan Zin @ Wan Ibrahim, WZ, Nahrawi, SA, Jemain, AA & Zahari, M 2014, A preliminary study on drought events in Peninsular Malaysia. in AIP Conference Proceedings. vol. 1602, American Institute of Physics Inc., pp. 1217-1225, 3rd International Conference on Mathematical Sciences, ICMS 2013, Kuala Lumpur, 17/12/13. https://doi.org/10.1063/1.4882639
Wan Zin @ Wan Ibrahim WZ, Nahrawi SA, Jemain AA, Zahari M. A preliminary study on drought events in Peninsular Malaysia. In AIP Conference Proceedings. Vol. 1602. American Institute of Physics Inc. 2014. p. 1217-1225 https://doi.org/10.1063/1.4882639
Wan Zin @ Wan Ibrahim, Wan Zawiah ; Nahrawi, Siti Aishah ; Jemain, Abdul Aziz ; Zahari, Marina. / A preliminary study on drought events in Peninsular Malaysia. AIP Conference Proceedings. Vol. 1602 American Institute of Physics Inc., 2014. pp. 1217-1225
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