RT info:eu-repo/semantics/conferencePaper T1 Bias correction of global irradiance modelled with the Weather Research and Forecasting model over Paraguay A1 Rincón Rodríguez, Ángel Alberto A1 Jorba, Oriol A1 Frutos, Miguel A1 Álvarez, Leopoldo A1 Barrios Pedretti, Fernando Pío A1 González Cuevas, Juan Alberto A2 Universidad Nacional de Asunción. Facultad de Ingeniería AB The estimation of solar irradiance is performed by means of numerical weather prediction models that include all the necessary information to solve the temporal, geographical and atmospheric conditions variability being this the basis of solar energy applications. However, the radiative transfer schemes implemented in meteorological models show systematic errors in the simulation of global irradiance (GHI). In this contribution, we present a post-process analysis of the Weather Research and Forecasting (WRF) model which combines a Kalman Filter with Model Output Statistics for bias correction in order to improve the overall predicted values of GHI simulations over Paraguay. The hourly GHI is simulated at 4x4 km2 of spatial resolution. The annual evaluation of the hourly WRF model without post process shows relative mean bias error (rMBE) of 21% and relative root mean square error (rRMSE) of 81%. The results using several ground stations and combinations of post-process show an annual correction of systematic errors with rMBE of -0.7% and rRMSE of 70%. PB International Solar Energy Society YR 2016 FD 2016 LK http://hdl.handle.net/20.500.14066/3197 UL http://hdl.handle.net/20.500.14066/3197 LA eng NO Rincón, A., Jorba, O., Frutos, M., Alvarez, L., Barrios, F. P., & González, J. A. (2016, 11-14 de octubre). Bias correction of global irradiance modelled with the Weather Research and Forecasting model over Paraguay [Artículo de la Conferencia]. EuroSun 2016: International Conference on Solar Energy and Buildings, Palma de Mallorca, España. NO Consejo Nacional de Ciencia y Tecnología DS MINDS@UW RD 03-sep-2026