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The HelioClim Project: Surface Solar Irradiance Data for Climate Applications

Abstract : Meteosat satellite images are processed to yield values of the incoming surface solar irradiance (SSI), one of the Essential Climate Variables. Two HelioClim databases, HC-1 and HC-3, were constructed covering Europe, Africa and the Atlantic Ocean, and contain daily and monthly means of SSI. The HC-1 database spans from 1985 to 2005; HC-3 began in 2004 and is updated daily. Their quality and limitations in retrieving monthly means of SSI have been studied by a comparison between eleven stations offering long time-series of measurements. A good agreement was observed for each site: bias was less than 10 W/m² in absolute value (5% in relative value) for HC-3. HC-1 offers a similar quality, though it underestimates the SSI for latitudes greater than 45° and less than −45°. Time-series running from 1985 to date can be created by concatenating the HC-1 and HC-3 values and could help in assessing SSI and its changes.
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Contributeur : Lucien Wald <>
Soumis le : jeudi 17 février 2011 - 16:55:54
Dernière modification le : jeudi 9 avril 2020 - 17:08:21
Document(s) archivé(s) le : mercredi 18 mai 2011 - 02:53:13


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Philippe Blanc, Benoît Gschwind, Mireille Lefèvre, Lucien Wald. The HelioClim Project: Surface Solar Irradiance Data for Climate Applications. Remote Sensing, MDPI, 2011, 3 (2), pp.343-361. ⟨10.3390/rs3020343⟩. ⟨hal-00566995⟩



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