Volume 3, Issue 1, January 2017, Page: 1-7
Investigation of the Dependence of Global Solar Radiation on Some Atmospheric Parameters Over Kano and Oyo-Nigeria
Inalegwu Emmanuel Ogwuche, Department of Physics, Federal University of Agriculture, Makurdi, Nigeria
Sombo T., Department of Physics, Federal University of Agriculture, Makurdi, Nigeria
Received: Jan. 29, 2017;       Accepted: Feb. 24, 2017;       Published: Mar. 6, 2017
DOI: 10.11648/j.rst.20170301.11      View  1807      Downloads  107
Some multi-linear regression equations were developed to investigate the dependence of global solar radiation on a combination of the following parameters: relative humidity, mean of daily temperature, ratio of maximum to minimum daily temperature, relative sunshine hour, rainfall, and the difference of monthly daily maximum and minimum temperature for Kano and Oyo-Nigeria for a span of 30 years (1981-2010). Using the Angstrom model as the base, ten (10) other regression equations were developed by modifying Angstrom equation. The results of statistical indicators: Coefficient of Determination (R2), Mean Bias Error (MBE), Root Mean Square Error (RMSE) and Mean Percentage Error (MPE); performed on the model along with practical comparison of the estimated and observed data validate the excellent performance accuracy of the proposed model. The equations with the highest value of coefficient of determination R2 and least value of RMSE, MBE, and MPE are given as: H/Ho= 0.351 + 0.556(S/So) – 0.268(RH/100) and H/Ho= 0.110 + 0.409(S/So) + 0.152(RH/100) for Kano and Oyo respectively, where S/So is the relative sunshine duration and RH is the relative humidity. The models can be used for estimating global solar radiation on horizontal surfaces for places with similar latitudes where radiation data are unavailable. Based on overall results, it was concluded that Sunshine duration and relative humidity are the most appropriate combination of climatic variables suitable for the estimation of global solar radiation in the study areas.
Solar Radiation, Meteorological Parameters, Relative Humidity, Temperature, Relative Sunshine Duration, Statistical Indicator
To cite this article
Inalegwu Emmanuel Ogwuche, Sombo T., Investigation of the Dependence of Global Solar Radiation on Some Atmospheric Parameters Over Kano and Oyo-Nigeria, Radiation Science and Technology. Vol. 3, No. 1, 2017, pp. 1-7. doi: 10.11648/j.rst.20170301.11
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Chineke, T. C. and Igwiro, E. C. (2008): Urban and rural electrification-enhancing the energy sector in Nigeria using photovoltaic technology. African journal science and tech. Vol. 9, Pp. 102-108.
Burari and Sambo (2001). Model for the prediction of global solar radiation for Bauchi using meteorological data. Nigeria journal of renewable energy Vol. 91 Pp 30–33.
El-Sebaii, A. A, Al-Hazmi, F. S. Al-Ghamdi, A. A. Yaghmour, S. J.(2010). Global, direct and diffuse solar radiation on horizontal and tilted surfaces in Jeddah, Saudi Arabia. Applied Energy.87 (2):568-576.
Alam M. S. Saha, S. K. Chowdhury, M. A. Saifuzzaman, M. and Rahman, M. (2005). Simulation of solar radiation systems. American Journal of Applied Sciences. 2 (4): 751-758.
Liu, X. Mei, X. and Li, Y. (2009). Evaluation of temperature based models in China. Agricultural and Forest Meteorology. 149 (9): 1433-1446.
Rahimikhoob, A. (2010). Estimating global solar radiation using artificial neural network and air temperature data in a semi-arid environment. Renewable Energy. 35 (9): 2131-2135.
Falayi, E. O. (2013). The Impact of Cloud Cover, Relative Humidity, Temperature and Rainfall on Solar Radiation in Nigeria.
Massaquoi, J. G. M. (1988). Global solar radiation in Sierra Leone (West Africa). Solar Wind Technology.5, 281 (283).
Ibrahim S. M. A (1985). Nigeria Journal on Solar Energy 35 (2): 185-188.
Liou, (1980); Introduction to Atmospheric Radiation. Academy press New York.
Angstrom, A. J. (1924). Solar and terrestrial radiation. Q. J Roy Met. Soc. 50: 121-126.
Duffie J. A.; Beckmann W. A. (2013). Solar engineering of thermal processes 3rdEdition, John Wiley, New Jersey.
Cooper, P. I. (1969). The absorption of solar radiation in solar stills. Solar energy, 12 (3): 31.
Igbal, M. (1983). An introduction to solar radiation. Academy press, New York.
Fayadh, M. A. and Ghazi, A. (1983). Estimation of global solar radiation in horizontal surfaces over Egypt. J. solids, 28: 166-172.
El-sebaii, A. A. and Trabea, A. A. (2005). Estimation of global solar radiation on horizontal surfaces over Egypt. J. Solids, 28: 166-172.
Almorox, J. (2005). Estimating global solar radiation from common meteorological data in Aranjuez, Spain. 35. 53-64.
Che, H. Z. Shi, G. Y. Zhang, X. Y. Zhao, J. Q. and Li, Y. (2007). Analysis of sky condition using 40 years record of solar radiation data in china. Theoretical and applied climatology. 89: 83-94.
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