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Comparison of different empirical conversion methods from 60-minute to 1-minute integration time in Malaysia

Mohd Sobli, Nuurul Hudaa and Ismail, Ahmad Fadzil and Mohd. Isa, Farah Nadia and Mansor, Hasmah and Saidin, Nor Azlina and Zainal Abidin, Mohd Shahnan (2014) Comparison of different empirical conversion methods from 60-minute to 1-minute integration time in Malaysia. Australian Journal of Basic and Applied Sciences, 8 (24). pp. 321-327. ISSN ISSN 1991-8178

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This paper presents some preliminary assessments of the precipitation rate conversion methods from 60-min to 1-min integration time. The conversion methods used in this study are Moupfouma and Khairolanuar et al., and ITU-R P.837. Rainfall rate data of twelve-months duration from January to December 2009 were acquired from Malaysia Meteorological Department (MMD) and exploited for the evaluation. The rainfall data were collected from MMD rain gauge station located at Kuala Lumpur International Airport (KLIA). The investigations comprise of producing annual rainfall rate cumulative distributions of the measured data. The equivalent 1-min annual rainfall rate cumulative distributions using conversion methods as mentioned above. Predicted values of annual 1-min cumulative distribution established by ITU-R P.837 are used as references. The equivalent 1-min equivalent cumulative distribution obtained from Moupfouma’s and Khairolanuar et al.’s methods are then compared with that of ITU-R P.837 to validate the applicability and efficiency of each method. According to the results, it can be observed that Khairolanuar et al.’s method capable of generating equivalent 1-min rainfall values with smallest percentage difference as compared to ITU-R P.837 at 0.01% of time exceedance.

Item Type: Article (Journal)
Additional Information: 5394/40706
Uncontrolled Keywords: rainfall rate; integration time; conversion methods; empirical conversion methods; 60-minute integration time; cumulative distribution function (CDF); Malaysia
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA197 Engineering meteorology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Date Deposited: 21 Jan 2015 16:35
Last Modified: 22 Jul 2022 10:54
URI: http://irep.iium.edu.my/id/eprint/40706

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