Simple new methods to estimate global solar radiation based on meteorological data in Egypt
DOI: 10.1016/J.ATMOSRES.2003.09.002
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摘要: Abstract Three simple methods to estimate global solar radiation are proposed in addition (Solar Energy 63 (1998) 147). All were tested seasonally and at different sky conditions seven locations Egypt. The use ground-based measurements of maximum minimum temperature, daily mean cloud cover extraterrestrial radiation. Average root square differences (RMSD) for a comparison between observed estimated all was around 10% the new 13% Supit–Van Kappel method. coefficient determination R2 is higher locations. Better results obtained when applying seasons. error (RMSE) Angstrom–Prescott method that based on sunshine duration data less than 1.0 MJ m−2 day−1 sites. On whole, performance statistics demonstrate better compared by
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