abbreviated as CRS. These two latter data sets begin in 2004 and offer 15 min SSRD with the same resolution than the SEVIRI pixels, i.e. 3 km at nadir and degrading as the satellite viewing angle is increasing. Several works have compared the quality of HC3v5 and CRS and have reported a slightly better quality for HC3v5, see Trolliet et al. (2018) and its references. Trolliet et al. (2018) also performed a comparison between SARAH-2, CRS and HC3v5 for daily means of irradiance in the tropical Atlantic Ocean for the period 2012-2013 and reported fairly similar performances between the three data sets. It can thus be speculated that at the spatial resolution of 0.25°, the SSRD-H3E data set offers the same quality than the SARAH-2 data set for the period starting in 2004, and surpasses the CRS data set. One may not conclude for the previous periods but one may note that Pfeifroth, 2017. ,
Though comparison between their results and ours in Table 3 is difficult because of the differences in period, in stations and in spatial resolution for SARAH-JRC, one may note that performances are fairly similar between these products and SSRD-H3E for the bias taking into account that all products exhibit large changes from station to station. Table 3 in Urraca et al. (2017) reports the average of the biases and the standard deviation, ) have assessed the quality level of the daily means of the SARAH-JRC and CLARA-A2 data sets against ground measurements in Europe for 2005 to 2015, 2017. ,
A new database of global and direct solar radiation using the Eastern Meteosat Satellite, models and validation. Remote Sens, vol.6, pp.8165-8189, 2014. ,
Verification of NCEP reanalysis shortwave radiation with mesoscale remote sensing data, IEEE Geosci. Remote Sens. Lett, vol.5, pp.34-37, 2008. ,
On the intrinsic time-scales of temporal variability in measurements of the surface solar radiation, vol.25, pp.19-37, 2018. ,
The HelioClim project: Surface solar irradiance data for climate applications. Remote Sens, vol.3, pp.343-361, 2011. ,
URL : https://hal.archives-ouvertes.fr/hal-00566995
The SG2 algorithm for a fast and accurate computation of the position of the Sun, Sol. Energy, vol.86, pp.3072-3083, 2012. ,
URL : https://hal.archives-ouvertes.fr/hal-00725987
Comparison between meteorological re-analyses from ERA-Interim and MERRA and measurements of daily solar irradiation at surface. Renew. Energ, vol.75, pp.135-143, 2015. ,
URL : https://hal.archives-ouvertes.fr/hal-01074107
An efficient method of estimating downward solar radiation based on the MODIS observations for the use of land surface modeling. Remote Sens, vol.6, pp.7136-7157, 2014. ,
Simulating Meteosat-7 broadband radiances at high temporal resolution using two visible channels of Meteosat-8, Sol. Energy, vol.80, pp.361-367, 2006. ,
Multivariate distribution correction of climate model outputs: A generalization of quantile mapping approaches: Multivariate distribution correction of climate model outputs, Environmetrics, vol.28, 2017. ,
A study of the errors due to temporal sampling of the earth's radiation budget, Tellus, vol.36, pp.303-316, 1984. ,
Converting a successful research project into a sustainable service: the case of the SoDa Web service, Environ. Modell. Softw, vol.21, pp.1555-1561, 2006. ,
URL : https://hal.archives-ouvertes.fr/hal-00361357
Spatial representativeness of ground-based solar radiation measurements, J. Geophys. Res. Atmos, vol.118, pp.8585-8597, 2013. ,
CLARA-A2: the second edition of the CM SAF cloud and radiation data record from 34 years of global AVHRR data, Atmos. Chem. Phys, vol.17, pp.5809-5828, 2017. ,
The HelioClim-1 database of daily solar radiation at Earth surface: an example of the benefits of GEOSS Data-CORE, IEEE J. Sel. Topics Appl. Earth Observ. in Remote Sens, vol.7, pp.1745-1753, 2014. ,
Using reduced data sets ISCCP-B2 from the Meteosat satellites to assess surface solar irradiance, Sol. Energy, vol.81, pp.240-253, 2007. ,
McClear: a new model estimating downwelling solar radiation at ground level in clear-sky condition, Atmos. Meas. Tech, vol.6, pp.2403-2418, 2013. ,
Digging the METEOSAT treasure-3 decades of solar surface radiation. Remote Sens, vol.7, pp.8067-8101, 2015. ,
Sensor data fusion, Journal of Intelligent and Robotics Systems, vol.1, pp.103-116, 1988. ,
Updated world map of the Köppen-Geiger climate classification, Hydrol. Earth Syst. Sci, vol.11, pp.1633-1644, 2007. ,
Surface Radiation Data Set -Heliosat (SARAH) -Edition 2. Satellite Application Facility on Climate Monitoring, 2017. ,
Trends and variability of surface solar radiation in Europe based on surface-and satellite-based data records, J. Atmos. Oceanic Technol, vol.123, pp.96-107, 1991. ,
Preliminary survey on site-adaptation techniques for satellite-derived and reanalysis solar radiation datasets, Sol. Energy, vol.132, pp.25-37, 2016. ,
URL : https://hal.archives-ouvertes.fr/hal-01297310
Improving HelioClim-3 estimates of surface solar irradiance using the McClear clear-sky model and recent advances in atmosphere composition, Atmos. Meas. Tech, vol.7, pp.3927-3933, 2014. ,
URL : https://hal.archives-ouvertes.fr/hal-01087291
Fast radiative transfer parameterisation for assessing the surface solar irradiance: The Heliosat-4 method, vol.26, pp.33-57, 2017. ,
URL : https://hal.archives-ouvertes.fr/hal-01512589
ISCCP global radiance data set: A new resource for climate research, Bull. Amer. Meteorol. Soc, vol.66, pp.1498-1503, 1985. ,
Estimating downwelling solar irradiance at the surface of the tropical Atlantic Ocean: A comparison of PIRATA measurements against several re-analyses and satellite-derived data sets, Ocean Sci, vol.14, pp.1021-1056, 2018. ,
Extensive validation of CM SAF surface radiation products over Europe. Remote Sensing of Environment, vol.199, pp.171-186, 2017. ,
Some terms of reference in data fusion, IEEE Trans. Geosci. Remote Sens, vol.37, pp.1190-1193, 1999. ,
URL : https://hal.archives-ouvertes.fr/hal-00356150
, WMO: Guide to meteorological instruments and methods of observation, World Meteorological Organization, issue.8, 2008.
Effective accuracy of satellite-derived hourly irradiances, Theoretical and Applied Climatology, vol.62, pp.199-207, 1999. ,
Correcting surface solar radiation of two data assimilation systems against FLUXNET observations in North America, J. Geophys. Res.-Atmos, vol.118, pp.9552-9564, 2013. ,