Articles | Volume 7, issue 11
Research article
25 Nov 2014
Research article |  | 25 Nov 2014

Improving HelioClim-3 estimates of surface solar irradiance using the McClear clear-sky model and recent advances in atmosphere composition

Z. Qu, B. Gschwind, M. Lefevre, and L. Wald

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Decoupling the effects of clear atmosphere and clouds to simplify calculations of the broadband solar irradiance at ground level
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McClear: a new model estimating downwelling solar radiation at ground level in clear-sky conditions
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Subject: Others (Wind, Precipitation, Temperature, etc.) | Technique: Remote Sensing | Topic: Validation and Intercomparisons
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Cited articles

Benedetti, A., Kaiser, J. W., and Morcrette, J.-J.: Global Climate, Aerosols in: State of the Climate in 2010, Bull. Am. Meteorol. Soc., 92, S65–S67, 2011.
Blanc, P., Gschwind, B., Lefevre, M., and Wald, L.: The HelioClim project: Surface solar irradiance data for climate applications, Remote Sens., 3, 343–361,, 2011.
Elias, T. and Roujean, J.-L.: Estimation of the aerosol radiative forcing at ground level, over land, and in cloudless atmosphere, from METEOSAT-7 observation: method and case study, Atmos. Chem. Phys., 8, 625–636,, 2008.
GCOS: Global Climate Observing System Essential Climate Variables, available at:, last access: 20 September 2013.
Geiger, M., Diabate, L., Menard, L., and Wald, L.: A web service for controlling the quality of measurements of global solar irradiation, Sol. Energy, 73, 475–480,, 2002.
Short summary
The HelioClim-3 database (HC3v3) provides records of surface solar irradiation every 15 min estimated by processing images from the geostationary meteorological Meteosat satellites using climatological data sets of atmospheric properties. A method is proposed to improve a posteriori HC3v3 by combining it with data records of advanced global aerosol property forecasts and physically consistent total column content in water vapour and ozone produced by the MACC projects.