Measurement platform for measuring directional irradiances
The DTU climate station with 16 dome covered pyranometers. The domes have apertures that allows solar irradiance only from 1/8th or 1/16th of the sky to reach the pyranometers.
Schematic overview of the directional pyranometers (left). Close-up of a dome covered pyranometer with an 1/8th aperture (right).
Since 1989 both direct and diffuse irradiances have been measured at the DTU climate station. The equipment for doing so has been updated regularly. The equipment as of 2014/2015 is shown here.
References
Andersen E., K. P. Nielsen, J. Dragsted & S. Furbo: "Measurements of the angular distribution of diffuse irradiance," Energy Procedia, 2015; 8: accepted.
