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Advances in Science and Research Contributions in Applied Meteorology and Climatology
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Volume 14
Adv. Sci. Res., 14, 17–22, 2017
https://doi.org/10.5194/asr-14-17-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Adv. Sci. Res., 14, 17–22, 2017
https://doi.org/10.5194/asr-14-17-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

  09 Feb 2017

09 Feb 2017

Evaluation of various procedures transposing global tilted irradiance to horizontal surface irradiance

Caroline Housmans and Cédric Bertrand Caroline Housmans and Cédric Bertrand
  • Royal Meteorological Institute of Belgium, Brussels, Belgium

Abstract. Many transposition models have been proposed in the literature to convert solar irradiance on the horizontal plane to that on a tilted plane. The inverse process, i.e. the conversion from tilted to horizontal is investigated here based upon seven months of in-plane global solar irradiance measurements recorded on the roof of the Royal Meteorological Institute of Belgium's radiation tower in Uccle (Longitude 4.35° E, Latitude 50.79° N). Up to three pyranometers mounted on inclined planes of different tilts and orientations were involved in the inverse transposition process. Our results indicate that (1) the tilt to horizontal irradiance conversion is improved when measurements from more than one tilted pyranometer are considered (i.e. by using a multi-pyranometer approach) and (2) the improvement from using an isotropic model to anisotropic models in the inverse transposition problem is not significant.

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