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Korean Meteorological Society (한국기상학회)
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An Analysis of Radiative Observation Environment for Korea Meteorological Administration (KMA) Solar Radiation Stations based on 3-Dimensional Camera and Digital Elevation Model (DEM)

3차원 카메라와 수치표고모델 자료에 따른 기상청 일사관측소의 복사관측환경 분석

  • Jee, Joon-Bum (Research Center for Atmospheric Environment, Hankuk University of Foreign Studies,) ;
  • Zo, Il-Sung (Research Institute for Radiation-Satellite, Gangneung-Wonju National University) ;
  • Lee, Kyu-Tae (Research Institute for Radiation-Satellite, Gangneung-Wonju National University) ;
  • Jo, Ji-Young (Department of Atmospheric and Environmental Sciences, Gangneung-Wonju National University,)
  • 지준범 (한국외국어대학교 대기환경연구센터) ;
  • 조일성 (강릉원주대학교 복사-위성연구소) ;
  • 이규태 (강릉원주대학교 복사-위성연구소) ;
  • 조지영 (강릉원주대학교 대기환경과학과)
  • Received : 2019.07.12
  • Accepted : 2019.09.24
  • Published : 2019.12.31
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Abstract

To analyze the observation environment of solar radiation stations operated by the Korea Meteorological Administration (KMA), we analyzed the skyline, Sky View Factor (SVF), and solar radiation due to the surrounding topography and artificial structures using a Digital Elevation Model (DEM), 3D camera, and solar radiation model. Solar energy shielding of 25 km around the station was analyzed using 10 m resolution DEM data and the skyline elevation and SVF were analyzed by the surrounding environment using the image captured by the 3D camera. The solar radiation model was used to assess the contribution of the environment to solar radiation. Because the skyline elevation retrieved from the DEM is different from the actual environment, it is compared with the results obtained from the 3D camera. From the skyline and SVF calculations, it was observed that some stations were shielded by the surrounding environment at sunrise and sunset. The topographic effect of 3D camera is therefore more than 20 times higher than that of DEM throughout the year for monthly accumulated solar radiation. Due to relatively low solar radiation in winter, the solar radiation shielding is large in winter. Also, for the annual accumulated solar radiation, the difference of the global solar radiation calculated using the 3D camera was 176.70 MJ (solar radiation with 7 days; suppose daily accumulated solar radiation 26 MJ) on an average and a maximum of 439.90 MJ (solar radiation with 17.5 days).

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References

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