한국농림기상학회지, 제 14권 제4호(2012) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 14, No. 4, (2012), pp. 260~264
DOI: 10.5532/KJAFM.2012.14.4.260
ⓒ Author(s) 2014. CC Attribution 3.0 License.


MT-CLIM 프로그램을 이용한 일별 일사량 추정의 국내 적용성 검토

심교문, 김용석, 이덕배, 강기경, 소규호
국립농업과학원 농업환경부 기후변화생태과

(2012년 10월 25일 접수; 2012년 11월 07일 수정; 2012년 11월 08일 수락)

Applicability of Daily Solar Radiation Estimated by Mountain
Microclimate Simulation Model (MT-CLIM) in Korea

Kyo Moon Shim, Yong Seok Kim, Deog Bae Lee, Ki Keong Kang, Kyo-Ho So
Climate Change & Agroecology Division, National Academy of Agricultural Science

(Received October 25, 2012; Revised November 07, 2012; Accepted November 08, 2012)

ABSTRACT
Accuracy of daily solar radiation estimated from a Mountain Microclimate Simulation Model (MT-CLIM) was assessed for seven observation sites with complex topography in Uiseong County. The coefficient of determination (R2) between the observed and the estimated daily solar radiation was 0.52 for 7 sites for the study period from 1 August to 30 September 2009. Overall, the MT-CLIM overestimated the solar radiation with root mean square error (RMSE) of 3.83MJ m-2 which is about 25% of the mean daily solar radiation (15.27MJ m-2) for the study period. Considering that the pyranometer’s tolerance is ±5% of standard sensor, the RMSE of MT-CLIM was too large to accept for a direct application for agricultural sector. The reliability of solar radiation estimated by MT-CLIM must be improved by considering additional ways such as using a topography correction coefficient.

Keyword: MT-CLIM, Root mean square error, Solar radiation, Complex topography

MAIN

적요

MT-CLIM 컴퓨터 프로그램을 이용한 일사량 추정의 국내 적용성 검토를 위하여 경북 의성군 일대에 7개 관측지점을 설정하고 실측 일사량과 프로그램에 의한 추정 일사량을 비교 검증하였다. 추정 일사량을 실측 일사량과 비교한 결과, 둘 사이에 결정계수 0.52의 선형관계가 확인되었고, 전체적으로는 과대 추정되는 것으로 조사되었다. MT-CLIM 프로그램에 의한 일사추정값의 RMSE는 평균 3.83MJ m−2 이어서, 일 평균 일사량 15.27MJ m−2의 25% 정도에 해당되었고, 본 연구에서 사용한 일사센서의 허용오차가 표준센서의 ±5%인 점을 감안하면 25%의 RMSE는 실용성이 떨어진다고 판단할 수 있다. 따라서 MT-CLIM 프로그램을 국내 농업분야에 적용하기 위해서는 지형보정계수 등 신뢰도를 개선시킬 추가적인 방법들이 모색되 어야 할 것으로 판단된다.

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