Comparison of Rainfall Interpolation Methods in Langat River Basin
Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
IOP Publishing
Abstract
In this study, Inverse Distance Weighting (IDW), Ordinary Kriging (OK), Simple Kriging (SK) and Kernel Smoothing (KS) method were considered in the rainfall interpolation for this area. Rainfall data at 20 points in Langat River Basin that obtained from DID Ampang for the period 2008–2017 were used as reference data. This study aimed to compare IDW, Kriging and Spline methods to obtain better interpolation methods. The interpolation is done by running a cross-validation using a geostatistical wizard in ArcGIS. The method effectiveness was evaluated by the calculation of mean error (ME), Root Mean Square Error (RMSE), Root mean Square Standardize Error (RMSSE) and Average Standard Error (ASE). For IDW method, only the ME and RMSE results are available.
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Citation
Hassim, M., Yuzir, A., Razali, M. N., Ros, F. C., Chow, M. F., & Othman, F. (2020, June). Comparison of rainfall interpolation methods in Langat River Basin. In IOP Conference Series: Earth and Environmental Science (Vol. 479, No. 1, p. 012018). IOP Publishing.