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

• Main Authors: HSU,CHIH-YU, 許智育
• Other Authors: CHEN,SHIEN-TSUNG
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/25gy5v

碩士 === 逢甲大學 === 水利工程與資源保育學系 === 107 === This study developed three time correlated hourly rainfall generators for short-duration rainfall event. The data of short-duration rainfall events were generated based on the rainfall characteristics of observed rainfall data from Taipei and Taichung meteorological stations. Rainfall characteristics between observations and model generated data were compared. Comparison results showed that the model that uses Markov chain to account for rainfall correlation can produce generated rainfall with average, standard deviation, skewness and correlation coefficient closest to observations. In addition, this study used the rainfall generator and climate change scenarios to project short-duration rainfall data under climate change. The scenarios under RCP 2.6 and RCP 8.5 in Taipei and Taichung were adopted. Projection results indicate that short-duration rainfalls slightly decrease in January, but slightly increase in July under climate change scenarios.