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Korean Meteorological Society (한국기상학회)
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Estimation of Solar Energy Based on High-Resolution Digital Elevation Model on the Seoul Area

서울지역의 고해상도 수치표고모델기반 태양 에너지 산출

  • Jee, Joon-Bum (Weather Information Service Engine, Hankuk University of Foreign Studies) ;
  • Jang, Min (Weather Information Service Engine, Hankuk University of Foreign Studies) ;
  • Min, Jae-Sik (Weather Information Service Engine, Hankuk University of Foreign Studies) ;
  • Zo, Il-Sung (Research Institute for Radiation-Satellite, Gangneung-Wonju National University) ;
  • Kim, Bu-Yo (Research Institute for Radiation-Satellite, Gangneung-Wonju National University) ;
  • Lee, Kyu-Tae (Research Institute for Radiation-Satellite, Gangneung-Wonju National University)
  • 지준범 (한국외국어대학교 차세대도시농림융합기상사업단) ;
  • 장민 (한국외국어대학교 차세대도시농림융합기상사업단) ;
  • 민재식 (한국외국어대학교 차세대도시농림융합기상사업단) ;
  • 조일성 (강릉원주대학교 복사위성연구소) ;
  • 김부요 (강릉원주대학교 복사위성연구소) ;
  • 이규태 (강릉원주대학교 복사위성연구소)
  • Received : 2017.05.23
  • Accepted : 2017.08.08
  • Published : 2017.09.30
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Abstract

Solar energy is calculated using high-resolution digital elevation model (DEM). In focus on Seoul metropolitan area, correction coefficients of direct and diffuse solar energy with the topographic effect are calculated from DEM with 1720, 900, 450, 90 and 30 spatial resolutions ($m{\times}m$), respectively. The solar energy on the real surface with high-resolution is corrected using by the correction coefficients with topographic effect from the solar energy on horizontal surface with lower resolution. Consequently, the solar energy on the real surface is more detailed distribution than those of horizontal surface. In particular, the topographic effect in the winter is larger than summer because of larger solar zenith angle in winter. In Seoul metropolitan area, the monthly mean topographic effects are more than 200% in winter and within 40% in summer. And annual topographic effects are negative role with more than -60% and positive role with below 40%, respectively. As a result, topographic effect on real surface is not a negligible factor when calculating and analyzing solar energy using regional and global models.

Keywords

References

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