Extraction Method of Extreme Rainfall Data
This study is aimed to describe step by step procedure in extracting extreme rainfall data series. Basically, the extraction of extreme rainfall data can be achieved using two methods, block maxima (BM) and peak over threshold (POT) methods. The BM method considers extracting the extreme rainfall da...
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| Format: | Conference or Workshop Item |
| Language: | English |
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IOP Publishing
2017
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| Online Access: | http://umpir.ump.edu.my/id/eprint/18915/1/Extraction%20Method%20of%20Extreme%20Rainfall%20Data.pdf |
| _version_ | 1825823951688826880 |
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| author | Roslinazairimah, Zakaria Noor Fadhilah, Ahmad Radi Siti Zanariah, Satari |
| author_facet | Roslinazairimah, Zakaria Noor Fadhilah, Ahmad Radi Siti Zanariah, Satari |
| author_sort | Roslinazairimah, Zakaria |
| collection | UMP |
| description | This study is aimed to describe step by step procedure in extracting extreme rainfall data series. Basically, the extraction of extreme rainfall data can be achieved using two methods, block maxima (BM) and peak over threshold (POT) methods. The BM method considers extracting the extreme rainfall data recorded each year during a specific duration, meanwhile the POT method is extracting all extreme rainfall data above a predefined threshold. Using the BM method, the regional pooling of 1-, 3-, 5- and 10-day are used and the maximum rainfall data are chosen among the pooled day within each year. For POT method, two methods are presented. Method 1 of POT method determines a threshold based on 95% percentile while Method 2 determines the threshold graphically using mean residual life plot and threshold stability plot. Based on the selection of the threshold value, a simulation study is conducted to identify the range of appropriate quantile estimate for a proper selection of the threshold value. For illustration of the methodology, daily rainfall data from the rainfall station at Klinik Chalok Barat, Terengganu is chosen. Both methods used are able to identify the extreme rainfall series. This study is important as it helps in identifying the good set of extreme rainfall series for further use such as in extreme rainfall modelling. |
| first_indexed | 2024-03-06T12:18:44Z |
| format | Conference or Workshop Item |
| id | UMPir18915 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:18:44Z |
| publishDate | 2017 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | UMPir189152018-10-03T04:13:31Z http://umpir.ump.edu.my/id/eprint/18915/ Extraction Method of Extreme Rainfall Data Roslinazairimah, Zakaria Noor Fadhilah, Ahmad Radi Siti Zanariah, Satari Q Science (General) QA75 Electronic computers. Computer science This study is aimed to describe step by step procedure in extracting extreme rainfall data series. Basically, the extraction of extreme rainfall data can be achieved using two methods, block maxima (BM) and peak over threshold (POT) methods. The BM method considers extracting the extreme rainfall data recorded each year during a specific duration, meanwhile the POT method is extracting all extreme rainfall data above a predefined threshold. Using the BM method, the regional pooling of 1-, 3-, 5- and 10-day are used and the maximum rainfall data are chosen among the pooled day within each year. For POT method, two methods are presented. Method 1 of POT method determines a threshold based on 95% percentile while Method 2 determines the threshold graphically using mean residual life plot and threshold stability plot. Based on the selection of the threshold value, a simulation study is conducted to identify the range of appropriate quantile estimate for a proper selection of the threshold value. For illustration of the methodology, daily rainfall data from the rainfall station at Klinik Chalok Barat, Terengganu is chosen. Both methods used are able to identify the extreme rainfall series. This study is important as it helps in identifying the good set of extreme rainfall series for further use such as in extreme rainfall modelling. IOP Publishing 2017 Conference or Workshop Item PeerReviewed application/pdf en cc_by http://umpir.ump.edu.my/id/eprint/18915/1/Extraction%20Method%20of%20Extreme%20Rainfall%20Data.pdf Roslinazairimah, Zakaria and Noor Fadhilah, Ahmad Radi and Siti Zanariah, Satari (2017) Extraction Method of Extreme Rainfall Data. In: Journal of Physics: Conference Series, 1st International Conference on Applied & Industrial Mathematics and Statistics 2017 (ICoAIMS 2017) , 8-10 August 2017 , Kuantan, Pahang, Malaysia. pp. 1-7., 890 (012154). ISSN 1742-6588 (print); 1742-6596 (online) (Published) http://dx.doi.org/10.1088/1742-6596/890/1/012154 doi: 10.1088/1742-6596/890/1/012154 |
| spellingShingle | Q Science (General) QA75 Electronic computers. Computer science Roslinazairimah, Zakaria Noor Fadhilah, Ahmad Radi Siti Zanariah, Satari Extraction Method of Extreme Rainfall Data |
| title | Extraction Method of Extreme Rainfall Data |
| title_full | Extraction Method of Extreme Rainfall Data |
| title_fullStr | Extraction Method of Extreme Rainfall Data |
| title_full_unstemmed | Extraction Method of Extreme Rainfall Data |
| title_short | Extraction Method of Extreme Rainfall Data |
| title_sort | extraction method of extreme rainfall data |
| topic | Q Science (General) QA75 Electronic computers. Computer science |
| url | http://umpir.ump.edu.my/id/eprint/18915/1/Extraction%20Method%20of%20Extreme%20Rainfall%20Data.pdf |
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