Spatial interpolation of monthly precipitation in selangor, Malaysia-Comparison and evaluation of methods

Nurul Nadiah Mohd FirdausHum and Suhaimi Abdul –Talib
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Nurul Nadiah Mohd FirdausHum: Faculty of Applied Sciences, Universiti Teknologi MARA, Malaysia
Suhaimi Abdul –Talib: Faculty of Civil Engineering, Universiti Teknologi MARA, Malaysia

Journal of Applied and Physical Sciences, 2016, vol. 2, issue 1, 1-9

Abstract: There are many spatial interpolations schemes, but none of them can perform best in all cases. Hence, this study aims to find an optimal interpolation scheme for precipitation in Selangor and Langat basin of which are the two major basins in Selangor. In order to obtain spatially distributed precipitation data, 21 measured rain gauges points are interpolated. Five interpolation methods have been tested after exploring data and cross-validation was used as the criterion to evaluate the accuracy of the various methods. The best method was obtained by the kriging method while the inverse distance weighting (IDW) perform worst.

Keywords: Precipitation; Interpolation; Cross-Validation; Kriging; IDW (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:apb:japsss:2016:p:1-9

DOI: 10.20474/japs-2.1.1

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