Characterization of Solar Over-Irradiance Events in Uruguay
Abstract
The first characterization of over-irradiance (OI) events in Uruguay is presented. These events are associated to high diffuse and global irradiance and occur during short time intervals (several minutes) for specific sky conditions. Their local characterization is of interest due to their potential impact on solar energy systems. A 1-minute solar irradiance time series with several years of data is used to identify and characterize OI events. These are observed in 3.1% of the filtered data records and the maximum horizontal irradiance was 1601 W/m2 (18 % above the mean extraterrestrial irradiance). Duration, intensity and maximum peak of intensity of OI events and their seasonality are also analyzed.