Improved watershed runoff estimation using radar-derived rainfall in Peninsular Malaysia

Yacoob, Waleed and Mohd Som, Mohd Amin and Ahmad Dahlan, Abdul Rahman and Abdul Rahman, Irdawati and Hasan, Saliza (2009) Improved watershed runoff estimation using radar-derived rainfall in Peninsular Malaysia. In: International Conference on Recent and Emerging Advanced Technologies in Engineering 2009 (iCREATE 2009), 23-24 November 2009, Pan Pacific KL International Airport Hotel, Sepang. (Unpublished)

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Abstract

In traditional hydrologic and water resource applications, rain gauges are the commonly used rainfall measuring device. Normally these rain gauges are installed at convenient locations. Rain gauges provide direct rainfall measurements over small areas. Malaysia is a humid tropical country with more than 60% of land area covered with forest. Hence, using rain gauges to determine the spatial distribution of watershed rainfall may not be the best technique. Weather radar provides measurements of rainfall over large area at high spatial resolution and frequent intervals. These characteristics make weather radar a useful system for rainfall estimation. The main objective of this study was to develop a technique to improve the performance of hydrological models to estimate runoff more accurately using radar-derived rainfall data incorporating GIS. The six weather radar stations (Subang, Alor Setar, Butterworth, Kluang, Kota Bharu and Kuantan) available in the Peninsular Malaysia were considered in this study. Radar-derived rainfall data was implemented to generate more representative rainfall distribution maps. Hence, considerable improvements were found in the watershed runoff estimation using radar rainfall compared to the available rain gauges.

Item Type:	Conference or Workshop Item (Full Paper)
Additional Information:	6250/6075
Uncontrolled Keywords:	virtual rainfall stations, rational method, knowledgeGRID Malaysia, AgriGRID
Subjects:	S Agriculture > S Agriculture (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Information and Communication Technology > Department of Information System Kulliyyah of Information and Communication Technology > Department of Information System
Depositing User:	Mr Abdul Rahman Ahmad Dahlan
Date Deposited:	20 Oct 2011 11:17
Last Modified:	11 Nov 2013 01:30
URI:	http://irep.iium.edu.my/id/eprint/6075

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