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Research Paper | Physics | Saudi Arabia | Volume 13 Issue 1, January 2024

Global Solar Radiation Estimation over Jazan, the Kingdom of Saudi Arabia

A. M. Fathy

Abstract: Empirical models offer precise and cost-effective insights into solar energy assessment. Our research was conducted in Jizan (17?30'N, 42?30'E, Elev: 7 m), situated in the southwest of the Kingdom of Saudi Arabia. The dataset encompasses monthly average values of global, diffuse, and direct solar radiation, along with the clearness index, alongside data on cloud cover percentage, air temperature, and relative humidity for the years 1983-2005.The distribution of monthly average values for solar radiation components was highest during the summer months, with the lowest values occurring in the winter months. Estimation of the monthly averaged value of global solar radiation using other parameters was performed for the same period. A strong direct correlation was observed between G and D, I, Kt, and T. Conversely, an inverse correlation was noted between G and RH% and Cl%.

Keywords: Global (G), diffuse (D) and direct (I) solar radiation, clearness index (Kt), air temperature (T), relative humidity (RH) and cloud cover (Cl) %

Edition: Volume 13 Issue 1, January 2024,

Pages: 1282 - 1285