A first evaluation of the European COSMO-REA6 reanalysis data set with respect to the representation of global horizontal radiation using the quality-controlled measurements of the Baseline Surface Radiation Network (BSRN) revealed systematic underestimation under clear sky conditions and overestimation during cloudy conditions.
Therefore a post-processing using orthogonal distance regression has been developed and applied in order to reduce the deviation of the reanalysis from the observations. Cross validation results show a general reduction of systematic biases for independent sites for the post-processed (COSMO-REA6pp) data set.
The post-processed data set is available for download in a 15-minute interval on the European COSMO-REA6 domain at 6km horizontal resolution:
The netCDF-files contain original and post-processed instantaneous data:
|GLOB_RAD_PP||Post-processed global radiation||surface||1995-2014|
|GLOB_RAD||Global radiation from COSMO-REA6||surface||1995-2014|