Journal of the Korean earth science society (한국지구과학회지)

The Korean Earth Science Society (한국지구과학회)
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Temporal and Spatial Distributions of Solar Radiation with Surface Pyranometer Data in South Korea

일사 관측 자료에 의한 남한의 태양복사 시공간 분포

  • Jee, Joon-Bum (Research Institute of Natural Sciences, Gangneung-Wonju National University) ;
  • Kim, Yeong-Do (Korea Climate Change & Energy Institute) ;
  • Lee, Won-Hak (Research Institute of Gangwon Development) ;
  • Lee, Kyu-Tae (Department of Atmospheric & Environmental Sciences, Gangneung-Wonju National University)
  • 지준범 (강릉원주대학교 자연과학연구소) ;
  • 김영도 (한국기후변화에너지연구소) ;
  • 이원학 (강원발전연구원) ;
  • 이규태 (강릉원주대학교 대기환경과학과)
  • Received : 2010.08.11
  • Accepted : 2010.11.18
  • Published : 2010.12.31
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Abstract

This study is to analyze the temporal and spatial distributions of solar radiation in South Korea. Solar radiation data is observed every minute at 22 KMA (Korea Meteorological Administration) stations using pyranometer from January 2000 to August 2007. These data were calibrated using intensive comparative observation and solar radiation model. Intensive comparative observations are accomplished at 22 KMA stations between KNU (Kangnung (Gangneung-Wonju) National University) standard and station instruments during the month of August 2007. The solar radiation of a clear sky mainly is affected by precipitable water, solar altitude and geological height. Also old (raw) data is corrected by the solar radiation model only about clear day and is revised based on the temporal trend of instrument's sensitivity decrease. At all periods and all stations, differences between raw data (13.31 MJ/day) and corrected data (13.75 MJ/day) are 0.44 MJ/ day. So, the spatial distribution of solar radiation is calculated with seasonal and annual mean, and is the relationship with cloud amount is analyzed. The corrected data show a better consistency with the cloud amount than the old data.

이 연구는 남한지역의 시 공간 태양복사 분포를 분석하는 것이다. 2000년 1월부터 2007년 8월 까지 1분 간격으로 저장된 기상청 관할 22개 관측소의 전천일사 관측자료를 이용하였다. 수집한 일사량 관측자료는 시간에 대하여 변화하는 일사계 감도정수에 대한 불확실성을 제거하기 위하여 비교관측 결과와 태양복사 모델을 이용하여 보정을 하였다. 보정을 수행하기 위하여 강릉대학교 전천일사계를 22개 관측소의 일사계와 2007년 8월 동안 비교 관측을 하였다. 과거자료는 맑은 날에 대하여 태양복사 모형을 이용하여 시간에 대해 감소하는 일사계의 감도정수를 토대로 보정하였다. 모든 지점 및 모든 기간에 대한 평균은 13.31 MJ/day이며 보정을 통하여 13.75 MJ/day가 되어 0.44 MJ/day의 차이가 나타났다. 보정된 자료로 계절평균 및 연평균 태양복사 분포를 계산하였으며 전운량, 오존전량, 에어로솔 광학 두께, 지표면 알베도, 가강수량과 관계성을 분석하였다. 가장 큰 영향을 미치는 전운량 자료를 보정된 자료와 비교한 결과 과거(원시)자료보다 일관성이 더 높게 나타났다.

Keywords

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