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Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia

Planning and design of agricultural, runoff and pollution control systems demand input of rainfall data, mostly, at sub-daily scale. Therefore, the need to explore rainfall characteristics at fine scale becomes important. It is known that, using the same data, the rainfall characteristics may differ...

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Main Authors: Shamsudin, Supiah, Dan'azumi, Salisu, Aris, Azmi
Format: Article
Language:English
Published: EuroJournals Publishing, Inc. 2010
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Online Access:http://eprints.utm.my/id/eprint/3394/1/Effect_of_Storm_Separation_Time_on_Rainfall_Charac.pdf
http://eprints.utm.my/id/eprint/3394/
http://www.eurojournals.com/ejsr_45_2_01.pdf
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spelling my.utm.33942017-02-07T02:50:29Z http://eprints.utm.my/id/eprint/3394/ Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia Shamsudin, Supiah Dan'azumi, Salisu Aris, Azmi Unspecified Planning and design of agricultural, runoff and pollution control systems demand input of rainfall data, mostly, at sub-daily scale. Therefore, the need to explore rainfall characteristics at fine scale becomes important. It is known that, using the same data, the rainfall characteristics may differ depending on the minimum inter-event time definition (MIT) used. Moreover, there is the problem of chosen a criteria for separating the rainfall events as the definition of the MIT separating two rainfall events is vague and arbitrary. This paper is aimed to study the effect of MIT on rainfall parameters. Hourly rainfall data were analysed for MIT values of 2hr, 4hr, 6hr, 9hr, 12hr, 18hr and 24hr. Results indicate that the rainfall frequency per annum is reduced from 199 to 89 when the MIT is altered from 2hr to 24hr. The mean depth, duration and inter-event time were increased with an increase in MIT while the mean intensity is decreased. Similarly, statistical parameters of maximum, standard deviation, CV, skewness and kurtosis were affected as the MIT value is altered. The results highlight the sensitivity of rainfall characteristics to MIT and as such care needs to be taken in the selection of MIT values in any study. © EuroJournals Publishing, Inc. 2010. EuroJournals Publishing, Inc. 2010 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/3394/1/Effect_of_Storm_Separation_Time_on_Rainfall_Charac.pdf Shamsudin, Supiah and Dan'azumi, Salisu and Aris, Azmi (2010) Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia. European Journal of Scientific Research, 45 (2). pp. 162-167. ISSN 1450-216X http://www.eurojournals.com/ejsr_45_2_01.pdf
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic Unspecified
spellingShingle Unspecified
Shamsudin, Supiah
Dan'azumi, Salisu
Aris, Azmi
Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia
description Planning and design of agricultural, runoff and pollution control systems demand input of rainfall data, mostly, at sub-daily scale. Therefore, the need to explore rainfall characteristics at fine scale becomes important. It is known that, using the same data, the rainfall characteristics may differ depending on the minimum inter-event time definition (MIT) used. Moreover, there is the problem of chosen a criteria for separating the rainfall events as the definition of the MIT separating two rainfall events is vague and arbitrary. This paper is aimed to study the effect of MIT on rainfall parameters. Hourly rainfall data were analysed for MIT values of 2hr, 4hr, 6hr, 9hr, 12hr, 18hr and 24hr. Results indicate that the rainfall frequency per annum is reduced from 199 to 89 when the MIT is altered from 2hr to 24hr. The mean depth, duration and inter-event time were increased with an increase in MIT while the mean intensity is decreased. Similarly, statistical parameters of maximum, standard deviation, CV, skewness and kurtosis were affected as the MIT value is altered. The results highlight the sensitivity of rainfall characteristics to MIT and as such care needs to be taken in the selection of MIT values in any study. © EuroJournals Publishing, Inc. 2010.
format Article
author Shamsudin, Supiah
Dan'azumi, Salisu
Aris, Azmi
author_facet Shamsudin, Supiah
Dan'azumi, Salisu
Aris, Azmi
author_sort Shamsudin, Supiah
title Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia
title_short Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia
title_full Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia
title_fullStr Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia
title_full_unstemmed Effect of storm separation time on rainfall characteristic - a case study of Johor Malaysia
title_sort effect of storm separation time on rainfall characteristic - a case study of johor malaysia
publisher EuroJournals Publishing, Inc.
publishDate 2010
url http://eprints.utm.my/id/eprint/3394/1/Effect_of_Storm_Separation_Time_on_Rainfall_Charac.pdf
http://eprints.utm.my/id/eprint/3394/
http://www.eurojournals.com/ejsr_45_2_01.pdf
_version_ 1643643798027239424
score 13.211869

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