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Estimating Global Solar Radiation on Horizontal Surface For Selected Stations over Iraq | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 24, Issue 1, 2013, Pages 143-154 | ||
| Author | ||
| Hadil .J.Assi | ||
| Abstract | ||
| IN this paper to occur estimate the monthly average daily of global solar radiation on horizontal surface (G) over different selected stations represent the various weather conditions in Iraq. Baghdad at (32 ͦ 14′ N), Basrah at (30 ͦ37′ N), Mousl at (36 ͦ 19′ N), and Rutba at (32 ͦ 02′ N). Three models have been used to calculate (G) for years 1984, 1994, and 2004, except Rutba we calculate (G) for years 1984 and 1994 because there is no number of hours of bright sunshine data for year 2004.The accuracy of the estimated global radiation data is tested by calculating the Root Mean Square error (RMSE%), Mean Bias Error (MBE), Mean Percentage Error (MPE), and correlation coefficient (Rc). Statistical result show that all three suggested models are accurately predicts the solar irradiance in these sites indicating a good predictive ability for modeling. Good agreement was observed between the measured and the estimated values for all three models. This study concludes that the three models can be used to estimate the Global solar radiation in case there are no measured values at any station in Iraq | ||
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