Articles | Volume 9, issue 4
Atmos. Meas. Tech., 9, 1601–1612, 2016
https://doi.org/10.5194/amt-9-1601-2016
Atmos. Meas. Tech., 9, 1601–1612, 2016
https://doi.org/10.5194/amt-9-1601-2016

Research article 12 Apr 2016

Research article | 12 Apr 2016

Calibration methods for rotating shadowband irradiometers and optimizing the calibration duration

Wilko Jessen et al.

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Cited articles

Augustyn, J., Geer, T., Stoffel, T., Kessler, R., Kern, E., Little, R., Vignola, F., and Boyson, B.: Update of Algorithm to Correct Direct Normal Irradiance Measurements Made with a Rotating Shadowband Pyranometer, in: Proc. Solar 2004, American Solar Energy Society, Boulder, USA, 2004.
Geuder, N. and Quaschning, V.: Soiling of irradiation sensors and method for soiling correction, Sol. Energy, 80, 1402–1409, 2006.
Geuder, N., Pulvermüller, B., and Vorbrugg, O.: Corrections for Rotating Shadowband Pyranometers for Solar Resource Assesment, Solar Energy + Applications, part of SPIE Optics + Photonics 2008, 10–14 August, San Diego, USA, 2008.
Geuder, N., Hanussek, M., Haller, J., Affolter, R., and Wilbert, S.: Comparison of Corrections and Calibration Procedures for Rotating Shadowband Irradiance Sensors, in: SolarPACES 2011, 20–23 September 2011, Granada, Spain, 2011.
Geuder, N., Affolter, R., Kraas, B., and Wilbert, S.: Long-term Behavior, Accuracy and Drift of LI-200 Pyranometers as Radiation Sensors in Rotating Shadowband Irradiometers (RSI), Energy Procedia, 49, 2330–2339, https://doi.org/10.1016/j.egypro.2014.03.247, 2014.
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Short summary
This paper covers procedures and requirements of two calibration methods and examines the necessary duration of acquisition of test measurements. Site-specific seasonal changes of environmental conditions cause small but noticeable fluctuation of calibration results. Calibration results within certain periods show a higher likelihood of deviation. These effects can partially be attenuated by including more measurements from outside these periods.