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http://dx.doi.org/10.3741/JKWRA.2007.40.12.921

Outlook on Variation of Water Resources in Korea under SRES A2 Scenario  

Bae, Deg-Hyo (Dept. of Civil and Environmental Engrg., Sejong Univ)
Jung, Il-Won (Dept. of Civil and Environmental Engrg., Sejong Univ)
Lee, Byong-Ju (Dept. of Civil and Environmental Engrg., Sejong Univ)
Publication Information
Journal of Korea Water Resources Association / v.40, no.12, 2007 , pp. 921-930 More about this Journal
Abstract
The objective of this study is to present temporal-spatial variation of water resources on climate change impacts using the IPCC SRES A2 scenario and dynamical downscaling of the results (using the MM5 model with a resolution of 27km by 27km) at 139 sub-basins in Korea. The variation of runoff shows differences in the change of rate according to the each sub-basins and analysis durations. It has increased in the sub-basins located in Han river basin and east part of it, the other basins have decreased. In seasonal analysis, runoff in autumn and winter have increased, while in spring and summer have decreased. The results of frequency analyzing classified runoff(Low flow(Q$\leq$5mm), Normal flow(5100mm)) show that low flow increase in most of the sub-basins for 2031-2060 and 2061-2090. In the case of high flow, it have higher frequency ranging from -100% to 500% than low flow. Regardless of the variation of mean runoff, maximum discharge appeared to be increase in process of time. The regression method is used to figure out the relationship between the rate of runoff change and mean temperature, mean precipitation under A2 scenario. The mean actual evapotranspirations from the regression equations increased by 3.4$\sim$5.3% for the change of $1^{\circ}C$. Also, for the precipitation change of $\pm$10%, runoff variety range is -18.2$\sim$+12.4% in Han River, -21.6$\sim$+14.6% in Nakdong River, -17.5$\sim$+11.5% in Gum River, -18.4$\sim$+10.6% in Sumjin River, -19.9$\sim$+12.7% Youngsan River basin.
Keywords
Climate change impact assessment; Water resources; A2 scenario; PRMS;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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