11 May 2026
| 11 May 2026
The regional reanalysis COSMO-R6G2 as a successor to COSMO-REA6: evaluation for renewable energy applications
Deutscher Wetterdienst, Climate and Environment, Frankfurter Straße 135, 63067 Offenbach, Germany
Fraunhofer Institute for Energy Economics and Energy System Technology (Fraunhofer IEE), Joseph-Beuys-Str. 8, 34117 Kassel, Germany
Michael Borsche
Deutscher Wetterdienst, Climate and Environment, Frankfurter Straße 135, 63067 Offenbach, Germany
Frank Kaspar
Deutscher Wetterdienst, Climate and Environment, Frankfurter Straße 135, 63067 Offenbach, Germany
now at: EUMETSAT, Darmstadt, Germany
Thomas Spangehl
Deutscher Wetterdienst, Climate and Environment, Frankfurter Straße 135, 63067 Offenbach, Germany
Dehong Yuan
Department of Sustainable Electrical Energy Systems, University of Kassel, Wilhelmshöher Allee 73, 34121 Kassel, Germany
Fraunhofer Institute for Energy Economics and Energy System Technology (Fraunhofer IEE), Joseph-Beuys-Str. 8, 34117 Kassel, Germany
David Geiger
Department of Sustainable Electrical Energy Systems, University of Kassel, Wilhelmshöher Allee 73, 34121 Kassel, Germany
Fraunhofer Institute for Energy Economics and Energy System Technology (Fraunhofer IEE), Joseph-Beuys-Str. 8, 34117 Kassel, Germany
Lukas Pauscher
Department of Sustainable Electrical Energy Systems, University of Kassel, Wilhelmshöher Allee 73, 34121 Kassel, Germany
Fraunhofer Institute for Energy Economics and Energy System Technology (Fraunhofer IEE), Joseph-Beuys-Str. 8, 34117 Kassel, Germany
Acoustics and Vibrations Research Group (AVRG), Vrije Universiteit Brussel, Pleinlaan 2, Ixelles, Brussels, 1050, Belgium
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Short summary
COSMO-REA6 is widely used in energy applications but has known deficits. Its successor, COSMO-R6G2, is evaluated for Germany, focusing on Global Horizontal Irradiance (GHI) as well as wind speed. It shows slightly lower GHI and good wind quality in flat areas, but underestimates night-time wind in mountains. Overall, it is a useful successor, though users should consider remaining limitations.
COSMO-REA6 is widely used in energy applications but has known deficits. Its successor,...
