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Evaluation of Rainfall Temporal Distribution Models with Annual Maximum Rainfall Events in Seoul, Korea

School of Civil, Environmental and Architectural Engineering, College of Engineering, Korea University, Seoul 02841, Korea
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Water 2018, 10(10), 1468; https://doi.org/10.3390/w10101468
Received: 17 September 2018 / Revised: 14 October 2018 / Accepted: 14 October 2018 / Published: 17 October 2018
(This article belongs to the Section Hydrology and Hydrogeology)
This study evaluated five models of rainfall temporal distribution (i.e., the Yen and Chow model, Mononobe model, alternating block method, Huff model, and Keifer and Chu model), with the annual maximum rainfall events selected from Seoul, Korea, from 1961 to 2016. Three different evaluation measures were considered: the absolute difference between the rainfall peaks of the model and the observed, the root mean square error, and the pattern correlation coefficient. Also, sensitivity analysis was conducted to determine whether the model, or the randomness of the rainfall temporal distribution, had the dominant effect on the runoff peak flow. As a result, the Keifer and Chu model was found to produce the most similar rainfall peak to the observed, the root mean square error was smaller for the Yen and Chow model and the alternating block method, and the pattern correlation was larger for the alternating block method. Overall, the best model to approximate the annual maximum rainfall events observed in Seoul, Korea, was found to be the alternating block method. Finally, the sensitivity of the runoff peak flow to the model of rainfall temporal distribution was found to be much higher than that to the randomness of the rainfall temporal distribution. In particular, in small basins with a high curve number (CN) value, the sensitivity of the runoff peak flow to the randomness of the rainfall temporal distribution was found to be insignificant. View Full-Text
Keywords: rainfall temporal distribution; annual maximum rainfall event; sensitivity analysis; rainfall–runoff analysis rainfall temporal distribution; annual maximum rainfall event; sensitivity analysis; rainfall–runoff analysis
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MDPI and ACS Style

Na, W.; Yoo, C. Evaluation of Rainfall Temporal Distribution Models with Annual Maximum Rainfall Events in Seoul, Korea. Water 2018, 10, 1468. https://doi.org/10.3390/w10101468

AMA Style

Na W, Yoo C. Evaluation of Rainfall Temporal Distribution Models with Annual Maximum Rainfall Events in Seoul, Korea. Water. 2018; 10(10):1468. https://doi.org/10.3390/w10101468

Chicago/Turabian Style

Na, Wooyoung; Yoo, Chulsang. 2018. "Evaluation of Rainfall Temporal Distribution Models with Annual Maximum Rainfall Events in Seoul, Korea" Water 10, no. 10: 1468. https://doi.org/10.3390/w10101468

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