Journal cover Journal topic
Advances in Science and Research Contributions in Applied Meteorology and Climatology
Journal topic

Journal metrics

Journal metrics

  • h5-index value: 10 h5-index 10
Volume 13 | Copyright
Adv. Sci. Res., 13, 129-136, 2016
https://doi.org/10.5194/asr-13-129-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

  27 Jul 2016

27 Jul 2016

Validation of the new HelioClim-3 version 4 real-time and short-term forecast service using 14 BSRN stations

Claire Thomas1, Laurent Saboret1, Etienne Wey1, Philippe Blanc2, and Lucien Wald2 Claire Thomas et al.
  • 1Transvalor S.A., Mougins, France
  • 2MINES ParisTech, PSL Research University, Sophia Antipolis, France

Abstract. Meteosat Second Generation (MSG) satellite images acquired every 15min during daytime are currently processed by the Heliosat-2 method every night to generate the HelioClim-3 (HC3) database of the surface solar irradiation for the day before. A new service is proposed based on version 4 of HC3 (HC3v4) that offers real-time and forecasted irradiation for horizons up to a few hours. The service is based on a local persistence of the clear-sky index. Its results were compared to coincident high quality 15min global irradiations measured in fourteen stations belonging to the Baseline Surface Radiation Network (BSRN). For forecasts for a temporal horizon of 15min ahead, the relative bias and root mean square error (RMSE) range respectively from 0 to 2%, and 20 to 23% for most stations. The correlation coefficient ranges from 0.94 to 0.95. These performances are similar to HC3v4 for the same stations. Expectedly, the quality of the forecasts degrades as the temporal horizon increases. For 1h ahead forecasts of 15min irradiation, the relative bias, root mean square error (RMSE) and correlation coefficient range respectively from −3 to 1%, 30 to 37%, and 0.90 to 0.91.

Download & links
Publications Copernicus
Download
Short summary
HelioClim-3 (version 4) is a satellite-derived solar surface irradiance database available at d-1 until 2015. To fulfill the requirements of numerous users, a new service based on the principle of persistence has been developed; it provides solar data in real time and forecasts until the end of the current day. The service exhibits good performances for 15 min and 1 h ahead forecasts, and degrades as the temporal horizon increases. Several customers have so far purchased this service.
HelioClim-3 (version 4) is a satellite-derived solar surface irradiance database available at...
Citation
Share