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Radar rainfall calibration for improved quantitative precipitation estimates in Kelantan and Terengganu river basins

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dc.citedby3
dc.contributor.authorWardah T.en_US
dc.contributor.authorSuzana R.en_US
dc.contributor.authorSazali O.en_US
dc.contributor.authorHafiz A.en_US
dc.contributor.authorLariyah M.S.en_US
dc.contributor.authorSharmy J.en_US
dc.contributor.authorid42862377800en_US
dc.contributor.authorid57195067562en_US
dc.contributor.authorid57203661689en_US
dc.contributor.authorid57203655814en_US
dc.contributor.authorid35070506500en_US
dc.contributor.authorid57203657953en_US
dc.date.accessioned2023-05-29T06:51:21Z
dc.date.available2023-05-29T06:51:21Z
dc.date.issued2018
dc.description.abstractThe unprecedented flood disaster that had caused massive damages and losses striking the eastern coast region of Peninsular Malaysia in December 2014 had necessitated for an improvement in the flood forecasting and warning system (FFWS). Comprehensive effort had been concerted in the enhancement of the FFWS including the use of radar rainfall as input to the system. This study focused on radar rainfall calibration to improve radar rainfall estimates to be used as inputs to National Flood Forecasting and Warning System (NaFFWS) for Kelantan and Terengganu river basins. The reflectivity data (Z) for period between 1st. November 2014 until 30st November 2015 from Kota Bharu (KB) radar together with the hourly rainfall (R) depths at 88 rainfall stations located in the basins for the same periods were used. Correlation analysis between derived radar rainfall using Marshall Palmer Z-R relation and gauged rainfall indicates that the further distance from the radar, the weaker the R2-coefficient value. The Z-R climatological calibration was subsequently done for four divisions of the river basin based on the distances from KB radar. The resulted optimized Z-R relations are Z=20R1.8 for distance 0-50 km and Z=10R1.9 for distance between 51-100 km, Z= 2R1.9 for distance 101-150 km and Z= 0.25R1.4 for distance above 150 km from KB radar. The performance measurement shows improved radar rainfall estimates for Kelantan and Terengganu river basins when using the calibrated Z-R equations. In addition, calibration using the ratio of gauged over radar rainfall was also shown to improve the radar rainfall estimates. � IAEME Publication.en_US
dc.description.natureFinalen_US
dc.identifier.epage36
dc.identifier.issue8
dc.identifier.scopus2-s2.0-85052602396
dc.identifier.spage27
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85052602396&partnerID=40&md5=7e6f6d7506ea43af1bf1600bcb1b8729
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/23733
dc.identifier.volume9
dc.publisherIAEME Publicationen_US
dc.sourceScopus
dc.sourcetitleInternational Journal of Civil Engineering and Technology
dc.titleRadar rainfall calibration for improved quantitative precipitation estimates in Kelantan and Terengganu river basinsen_US
dc.typeArticleen_US
dspace.entity.typePublication
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