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Solar Irradiance Estimation in Korea by Using Modified Heliosat-II Method and COMS-MI Imagery
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 Title & Authors
Solar Irradiance Estimation in Korea by Using Modified Heliosat-II Method and COMS-MI Imagery
Won Seok, Choi; Ah Ram, Song; Il, Kim Yong;
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 Abstract
Solar radiation data are important data that can be used as basic research data in diverse areas. In particular, solar radiation data are essential for diverse studies that have been recently conducted in South Korea including those for new and renewable energy resource map making and crop yield forecasting. So purpose of this study is modification of Heliosat-II method to estimate solar irradiance in Korea by using COMS-MI imagery. For this purpose, in this study, errors appearing in ground albedo images were corrected through linear transformation. And method of producing background albedo map which is used in Heliosat-II method is modified to get more finely tuned one. Through the study, ground albedo correction could be successfully performed and background albedo maps could be successfully derived. Lastly, In this study, solar irradiance was estimated by using modified Heliostat-II method. And it was compared with actually measured values to verify the accuracy of the methods. Accuracy of estimated solar irradiance was 30.8% RMSE(%). And this accuracy level means that solar irradiance was estimated on 10% higher level than previous Heliosat-II method.
 Keywords
Solar Irradiance Map;Solar Irradiance Estimation;Heliosat-II Method;Ground Albedo Correction;Background Albedo Map;COMS-MI Imagery;
 Language
Korean
 Cited by
1.
The Sensitivity Analysis according to Observed Frequency of Daily Composite Insolation based on COMS, Korean Journal of Remote Sensing, 2016, 32, 6, 733  crossref(new windwow)
2.
Toward Improved Solar Irradiance Forecasts: Comparison of the Global Horizontal Irradiances Derived from the COMS Satellite Imagery Over the Korean Peninsula, Pure and Applied Geophysics, 2017, 174, 7, 2773  crossref(new windwow)
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