Bachour, D.; Perez-Astudillo, D. - In: Renewable Energy 71 (2014) C, pp. 32-36
humidity and air pressure) are presented and analysed. The annual average of clearness index for Doha obtained from ground … measurements is 0.62, somewhat higher than the 22-year averaged value provided by the NASA-SSE database, 0.57. GHI and clearness … index values are important parameters for solar-related projects; GHI assessment, for instance, is vital for PV applications …