Articles | Volume 14
https://doi.org/10.5194/asr-14-35-2017
https://doi.org/10.5194/asr-14-35-2017
21 Feb 2017
 | 21 Feb 2017

Do modelled or satellite-based estimates of surface solar irradiance accurately describe its temporal variability?

Marc Bengulescu, Philippe Blanc, Alexandre Boilley, and Lucien Wald

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Latest update: 20 Nov 2024
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Short summary
This study investigates the characteristic time-scales of variability found in long-term time-series of daily means of surface solar irradiance (SSI). Estimates of SSI from satellite-derived HelioClim-3 and radiation products from ERA-Interim and MERRA-2 re-analyses are compared to WRDC measurements. It is found that HelioClim-3 renders a more accurate picture of the variability found in ground measurements, not only globally, but also with respect to individual characteristic time-scales.