Abstract: The study was initiated to investigate variability and change in Global Solar Radiation (GSR) penetration from climate change. Based on the meteorological data at Ile-Ife, Nigeria which is more detailed than for other stations the relations between measured GSR and other key meteorological variables namely, temperature, relative humidity, rainfall, and wind speed were established. Cross-correlation analyses methods were employed in establishing the relationship between global solar radiation and other meteorological variables influencing GSR variability. The correlation coefficient (r) between two variables, say and were established from the expression: The plots show that GSR has negative correlation with RH (r=0.4) and, a positive but low correlation (r=0.17) with rain. With the case of wind speed, the mode of correlation (r=0.12) appears complex. While there appears to be some positive pattern of correlation from January to August, this is reversed during the period September to December. The correlation of annual mean data for the period 2005 to 2010 shows the annual trends and associated correlations between GSR and RH, rain and wind speed during the period 2004 and 2011. The results in general show higher correlations than during the annual cycle.
Keywords: Cross-correlation analyses, Global Solar Radiation (GSR), meteorological data.
Title: Cross-correlation Analysis of Meteorological Indices on Global Solar Radiation Behaviour in Nigeria
Author: J.A. Akinpelu, I.B. Obioh
International Journal of Mathematics and Physical Sciences Research
ISSN 2348-5736 (Online)
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