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Rainfall trend analysis in the Mae Klong River Basin, Thailand |
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| รหัสดีโอไอ | |
| Creator | Alamgir Khalil |
| Title | Rainfall trend analysis in the Mae Klong River Basin, Thailand |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2563 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 42 |
| Journal No. | 4 |
| Page no. | 879-888 |
| Keyword | rainfall, trend analysis, Mann-Kendall test, Sen's slope test, Mae Klong River Basin |
| URL Website | https://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | This paper examined seasonal and annual rainfall trends of the Mae Klong River Basin in Thailand. Monthly rainfalldata of eight stations were used for the period 1971?2015. The non-parametric Mann-Kendall test was used to detect trendswhereas the slope of the trends was determined by Sen's slope method. Datasets with significant serial correlation were correctedby the pre-whitening approach. For the dry season, 5 out of 8 stations showed increasing rainfall trends while for the wet season,50% of the stations showed increasing trends. On an annual scale, 75% of the stations exhibited increasing rainfall trends. Theupper region of the basin which contributes inflows to the Srinagarind and Vajiralongkorn Dams had increasing annual rainfalltrends. For the entire basin, the trend analysis found increasing rainfall on both seasonal and annual scales. The results of thisstudy can help water resource managers prepare better assessments and planning of water resources in the basin. |
