Articles | Volume 13
https://doi.org/10.5194/asr-13-121-2016
https://doi.org/10.5194/asr-13-121-2016
19 Jul 2016
 | 19 Jul 2016

On the temporal variability of the surface solar radiation by means of spectral representations

Marc Bengulescu, Philippe Blanc, and Lucien Wald

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Cited articles

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Short summary
The continuous wavelet (CWT) and the Hilbert–Huang transforms (HHT) are compared for the analysis of the temporal variability on ten years of daily means of the surface solar irradiance. In both cases, the variability exhibits a plateau between scales of two days and three months that has decreasing power with increasing scale, a spectral peak corresponding to the annual cycle, and a low power regime in-between. The HHT is shown to be suitable for inspecting the variability of the measurements.