RT info:eu-repo/semantics/article T1 Mathematical interpolation methods for spatial estimation of global horizontal irradiation in Castilla-León, Spain: a case study A1 Rodríguez Amigo, María del Carmen A1 Diez Mediavilla, Montserrat A1 González Peña, David A1 Pérez Burgos, Ana Mª A1 Alonso Tristán, Cristina K1 Interpolation methods K1 Solar radiation K1 Ground meteorological network K1 ArcGis K1 Electric engineering K1 Ingeniería eléctrica AB Four spatial interpolation methods (Inverse Distance Weighted, Spline, Kriging and Natural Neighbor) and their different variations are employed to map Global Horizontal Irradiation (GHI) in Castilla-León, Spain. The work has been performed using the software ArcGis, widely used in geostatistical applications, showing the versatility of the system and its applicability to climate data. The measuring network consists of 71 ground meteorological stations that use seven complete years of half-hourly data sets, yielding annual daily averages of GHI. The interpolation results are tested against data from the four Spanish National Meteorological Agency (AEMET) stations available in the region using standard statistical indicators (RMSE, MBE, MAPE and MAE). An additional partial cross validation of the results, which excludes five stations from the measuring network, employs different criteria to verify the results of the interpolation methods applied. This work contributes to the classification of interpolation methods to obtain climatological data across large areas with a low number of irregularly distributed of measurement points and with a low topographic complexity. The Universal Kriging method with quadratic semi-variogram shows the best results taking into account the RMSE and MAE statistical indicators PB Elsevier SN 0038-092X YR 2017 FD 2017-07 LK http://hdl.handle.net/10259/4495 UL http://hdl.handle.net/10259/4495 LA eng NO SpanishGovernment (Grant ENE2014-54601-R) and Junta de Castilla-León (BU034U16). One of the authors, David González Peña, thanksto Junta de Castilla-León and European Social Fund (OrdenEDU/310/2015) for financial support. DS Repositorio Institucional de la Universidad de Burgos RD 27-abr-2024