Solar irradiance, particularly on vertical surfaces, plays a major role in determining the thermal and energy performance of a building. It is important to the design and analysis of both active solar systems and passive solar buildings. Many mathematical models are mainly developed to predict...

With high penetration of PV generation in power grid distribution systems, solar irradiance fluctuations introduced by moving clouds may lead to variations in voltage and power flow in the grid and may affect the stability of the grid system. Predicting the characteristics of the fluctuations...

The biological and photochemical effects of solar radiation and solar energy applications make it really important to characterize the variability of this component. In view of the fact that the clearness index indicates not only the level of availability of solar radiation but also the changes...