Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Estimation of Surface Fluxes Using Noah LSM and Assessment of the Applicability in Korean Peninsula

Noah LSM을 이용한 지표 플럭스 산정 및 한반도에서의 적용성 검토

  • Jang, Ehsun (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Moon, Heewon (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Hwang, Seok Hwan (Water Resources Research Division, Korea Institute Of Construction Technology) ;
  • Choi, Minha (Department of Civil and Environmental Engineering, Hanyang University)
  • 장애선 (한양대학교 건설환경공학과) ;
  • 문희원 (한양대학교 건설환경공학과) ;
  • 황석환 (한국건설기술연구원 수자원연구실) ;
  • 최민하 (한양대학교 건설환경공학과)
  • Received : 2013.08.13
  • Accepted : 2013.10.14
  • Published : 2013.11.30
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Abstract

Understanding of the exchange between the water and energy which is happening between the surface and atmosphere is the basic of studying water resources. To study these, lots of researches using Noah Land Surface Model(LSM) are in progress. Noah LSM is based on energy and water balance equation and simulates various hydrological factors. There are diverse researches with Noah LSM are ongoing in overseas, on the other hand not enough study has been done. Especially there is almost no study using uncoupled Noah LSM in Korea. In this study we used data from Korea Flux Tower in Haenam(HFK) and Gwangneung(GDK) as forcing data to simulate the model and compared its result of net radiation, sensible heat flux and latent heat flux with the observation data to assess the applicability of Noah LSM in Korea. Regression coefficients of the comparison results of Noah LSM and observation show good agreement with the value of 0.83~0.99 at Haenam and 0.64~0.99 at Gwangneung which means Noah LSM can be trusted.

지표와 대기간의 에너지 및 수문기상인자들의 교환에 대한 이해는 수자원분야의 연구에 있어서 기초라 할 수 있으며 이를 위하여 Land Surface Mode(LSM)을 활용한 연구가 활발히 진행되고 있다. Noah Land Surface Model (Noah LSM)은 에너지 방정식과 물수지 방정식을 기반으로 한 지면모형으로 수문기상인자들에 대한 모의가 가능하다. 국외에는 Noah LSM을 이용한 다양한 연구사례들이 있으나, 국내에서는 적용사례가 매우 부족하며, 특히 단독으로 Noah LSM을 적용한 사례는 전무한 실정이다. 본 연구에서는 Noah LSM의 국내 적용성을 평가하기 위해 해남(HFK)과 광릉(GDK) Korea Flux Network (KoFlux)에서 제공하는 자료를 입력자료로 활용하여 모형 결과를 산출하고, 순 복사량, 잠열, 현열의 결과를 관측자료와 비교 검증하였다. 모형 결과와 관측치를 비교한 결과 회귀분석에서의 상관계수 값이 각 인자 별로 해남은 0.83~099, 광릉은 0.64~0.99로 신뢰할 만한 수준인 것으로 나타났다.

Keywords

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