Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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The Application Assessment of Global Hydrologic Analysis Models on South Korea

전지구 수문해석 모형의 국내 적용성 평가

  • 손경환 (세종대학교 토목환경공학과) ;
  • 이종대 ((주) 건화 수자원부) ;
  • 배덕효 (세종대학교 물자원연구소 토목환경공학과)
  • Received : 2010.07.02
  • Accepted : 2010.11.30
  • Published : 2010.12.31
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Abstract

The objective of this study is to evaluate the application of Land Surface Model (LSM) and global spatial and weather data. After selecting the appropriate LSM, we evaluated the calculation ability of the model for dam basins. Based on the global meteorological and topography data, the accuracy of runoff results were analysed to assess the uncertainty of global data. Period analysis was performed to suggest the global data utilization. The model results by using local data are within the acceptable range reflecting the local complex meteorological and topographical characteristics. Although the accuracy of the simulated results from global data is not good by the uncertainty of meteorological data, it indicated that the accuracy can be improved with increasing duration of runoff analysis over 10 days.

본 연구의 목적은 전지구 수문해석도구인 지표수문해석모형과 전지구 자료의 적용성을 평가하는데 있다. 이에 적정 지표수문해석모형을 선정하고 관측 댐 상류 유역을 대상으로 모형의 모의 능력을 평가하였다. 전지구 자료는 전 세계를 대상으로 제공되는 기상 및 지형 자료를 이용하였으며, 전지구 자료의 불확실성을 평가하기 위해 자료별 생성되는 유출 결과의 정확도를 분석하였다. 또한 기간별 유출분석을 수행하여 전지구 자료의 활용방안을 마련하였다. 국내 자료를 기반으로 모형의 모의 능력을 분석한 결과 국내의 복잡한 기상 및 지형학적 특성에 대해서 신뢰성 높은 유출모의가 가능한 것으로 확인되었다. 전지구 자료에 대한 모의 결과는 기상정보의 불확실성으로 인해 일단위 유출해석은 다소 부정확한 것으로 나타났으나, 기간별 분석에서는 단위 기간이 증가함에 따라 유출 결과의 정확도가 향상되었으며, 10일 단위 이상의 유출분석이 적절한 것으로 나타났다.

Keywords

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