Development and application of hourly rainfall generator for short-duration rainfall event

• Main Authors: SIE,JIA-SHEN, 謝佳燊
• Other Authors: Chen,Shien-Tsung
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/m7t7a8

碩士 === 逢甲大學 === 水利工程與資源保育學系 === 105 === Rainfall generators are usually developed to generate daily rainfall data that are not well suited for studies of severe rainfall-induced disasters. This study developed an hourly rainfall generator for generating short-duration rainfall events. Hourly rainfall data from three meteorological stations in Taiwan were used as the case study. Statistical analysis was preformed to obtain the parameters of the short-duration rainfall events, and those parameters were used by the generator to reproduce hourly rainfall data. Comparative results indicate that the proposed hourly rainfall generator can reproduce rainfall data with similar values of the average and standard deviation. In addition, this study used the hourly rainfall generator to generate short-duration rainfall events under the scenario of increased urban temperature in Taichung, with the established statistical relationship between the increased urban temperature and the change rate of rainfall parameters in Taichung. Scenario data indicate an increased amount and diversity of short-duration rainfall events in the wet season.