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http://dx.doi.org/10.5467/JKESS.2017.38.2.129

An Analysis of Global Solar Radiation using the GWNU Solar Radiation Model and Automated Total Cloud Cover Instrument in Gangneung Region  

Park, Hye-In (Satellite Development Team, National Meteorological Satellite Center)
Zo, Il-Sung (Research Institute for Radiation-Satellite, Gangneung-Wonju National University)
Kim, Bu-Yo (Research Institute for Radiation-Satellite, Gangneung-Wonju National University)
Jee, Joon-Bum (Weather Information Service Engine, Hankuk University of Foreign Studies)
Lee, Kyu-Tae (Research Institute for Radiation-Satellite, Gangneung-Wonju National University)
Publication Information
Journal of the Korean earth science society / v.38, no.2, 2017 , pp. 129-140 More about this Journal
Abstract
Global solar radiation was calculated in this research using ground-base measurement data, meteorological satellite data, and GWNU (Gangneung-Wonju National University) solar radiation model. We also analyzed the accuracy of the GWNU model by comparing the observed solar radiation according to the total cloud cover. Our research was based on the global solar radiation of the GWNU radiation site in 2012, observation data such as temperature and pressure, humidity, aerosol, total ozone amount data from the Ozone Monitoring Instrument (OMI) sensor, and Skyview data used for evaluation of cloud mask and total cloud cover. On a clear day when the total cloud cover was 0 tenth, the calculated global solar radiations using the GWNU model had a high correlation coefficient of 0.98 compared with the observed solar radiation, but root mean square error (RMSE) was relatively high, i.e., $36.62Wm^{-2}$. The Skyview equipment was unable to determine the meteorological condition such as thin clouds, mist, and haze. On a cloudy day, regression equations were used for the radiation model to correct the effect of clouds. The correlation coefficient was 0.92, but the RMSE was high, i.e., $99.50Wm^{-2}$. For more accurate analysis, additional analysis of various elements including shielding of the direct radiation component and cloud optical thickness is required. The results of this study can be useful in the area where the global solar radiation is not observed by calculating the global solar radiation per minute or time.
Keywords
global solar radiation; total cloud cover; GWNU radiation model; GWNU radiation site; skyview;
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Times Cited By KSCI : 7  (Citation Analysis)
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