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A comparative study on a simple two-parameter monthly water balance model and the Kajiyama formula for monthly runoff estimation |
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| Authors: | Soojun Kim Seung Jin Hong Narae Kang Hui Seong Noh Hung Soo Kim |
| Affiliation: | 1. Columbia Water Center, Earth Institute, Columbia University, New York, NY 10027, USAsookim@inha.ac.kr;3. Department of Civil Engineering, Inha University, Incheon 402-751, South Korea |
| Abstract: | ABSTRACTA two-parameter monthly water balance model to simulate runoff can be used for a water resources planning programme and climate impact studies. However, the model estimates two parameters of transformation of time scale (c) and of the field capacity (SC) by a trial-and-error method. This study suggests a modified methodology to estimate the parameters c and SC using the meteorological and geological conditions. The modified model is compared with the Kajiyama formula to simulate the runoff in the Han River and International Hydrological Programme representative basins in South Korea. We show that the estimated c and SC can be used as the initial or optimal values for the monthly runoff simulation study in the model. EDITOR M.C. Acreman; ASSOCIATE EDITOR S. Kanae |
| Keywords: | kajiyama formula water balance runoff simulation field capacity curve number (CN) |