Comparison of Rainfall Interpolation Methods in Langat River Basin
Disasters; Errors; Inverse problems; Mean square error; Rain; Rain gages; Rivers; Watersheds; Disaster mitigation; Hydrology modeling; Interpolation method; Inverse distance weighting; Rainfall interpolation; Root mean square errors; Spatial interpolation; Statistical evaluation; Interpolation
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2023
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my.uniten.dspace-253872023-05-29T16:08:49Z Comparison of Rainfall Interpolation Methods in Langat River Basin Hassim M. Yuzir A. Razali M.N. Ros F.C. Chow M.F. Othman F. 14625397700 56703426300 36440450000 57222964772 57214146115 36630785100 Disasters; Errors; Inverse problems; Mean square error; Rain; Rain gages; Rivers; Watersheds; Disaster mitigation; Hydrology modeling; Interpolation method; Inverse distance weighting; Rainfall interpolation; Root mean square errors; Spatial interpolation; Statistical evaluation; Interpolation Rainfall is an element of climate that can be measured by a rain gauge. The rain gauge was set up for every station predefined by the Department of Irrigation and Drainage (DID) Malaysia. One millimeter (mm) of rainfall means that within a square meter of a flat surface, water can be as high as one mm. In the hydrology model, the rainfall data is very important in order to predict the flood or assist in the disaster mitigation plan. In this case, the availability of complete rainfall data in a region is essential. By performing spatial interpolation, rainfall data can predict values from the empty data at each point. 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. From the result, it can be seen that SK method outperforms the IDW, OK and KS method for these rainfall interpolations in Langat River Basin by showing better statistical evaluation. � Published under licence by IOP Publishing Ltd. Final 2023-05-29T08:08:49Z 2023-05-29T08:08:49Z 2020 Conference Paper 10.1088/1755-1315/479/1/012018 2-s2.0-85089134891 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089134891&doi=10.1088%2f1755-1315%2f479%2f1%2f012018&partnerID=40&md5=f15ace00d5a03dfbf5a0fafcab13b852 https://irepository.uniten.edu.my/handle/123456789/25387 479 1 12018 All Open Access, Bronze Institute of Physics Publishing Scopus |
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| description |
Disasters; Errors; Inverse problems; Mean square error; Rain; Rain gages; Rivers; Watersheds; Disaster mitigation; Hydrology modeling; Interpolation method; Inverse distance weighting; Rainfall interpolation; Root mean square errors; Spatial interpolation; Statistical evaluation; Interpolation |
| author2 |
14625397700 |
| author_facet |
14625397700 Hassim M. Yuzir A. Razali M.N. Ros F.C. Chow M.F. Othman F. |
| format |
Conference Paper |
| author |
Hassim M. Yuzir A. Razali M.N. Ros F.C. Chow M.F. Othman F. |
| spellingShingle |
Hassim M. Yuzir A. Razali M.N. Ros F.C. Chow M.F. Othman F. Comparison of Rainfall Interpolation Methods in Langat River Basin |
| author_sort |
Hassim M. |
| title |
Comparison of Rainfall Interpolation Methods in Langat River Basin |
| title_short |
Comparison of Rainfall Interpolation Methods in Langat River Basin |
| title_full |
Comparison of Rainfall Interpolation Methods in Langat River Basin |
| title_fullStr |
Comparison of Rainfall Interpolation Methods in Langat River Basin |
| title_full_unstemmed |
Comparison of Rainfall Interpolation Methods in Langat River Basin |
| title_sort |
comparison of rainfall interpolation methods in langat river basin |
| publisher |
Institute of Physics Publishing |
| publishDate |
2023 |
| _version_ |
1806424288299843584 |
| score |
13.211869 |