RT info:eu-repo/semantics/article T1 Daily estimation of global solar irradiation and temperatures using artificial neural networks through the virtual weather station concept in Castilla and León, Spain A1 Diez, Francisco Javier A1 Boukharta, Ouiam Fatiha A1 Navas Gracia, Luis Manuel A1 Chico Santamarta, Leticia A1 Martínez Rodríguez, Andrés A1 Correa Guimaraes, Adriana K1 Solar radiation K1 Radiación solar K1 Temperature measurements K1 Meteorology K1 Meteorology, Agricultural K1 Evapotranspiration K1 Evaporación (Meteorología) - España K1 Climatology K1 Artificial intelligence K1 Redes neuronales (Informática) K1 Spatial analysis (Statistics) K1 Análisis espacial (Estadística) K1 2509 Meteorología K1 2509.01 Meteorología agrícola K1 2502 Climatología K1 1203.04 Inteligencia Artificial AB In this article, the interpolation of daily data of global solar irradiation, and the maximum, average, and minimum temperatures were measured. These measurements were carried out in the agrometeorological stations belonging to the Agro-climatic Information System for Irrigation (SIAR, in Spanish) of the Region of Castilla and León, in Spain, through the concept of Virtual Weather Station (VWS), which is implemented with Artificial Neural Networks (ANNs). This is serving to estimate data in every point of the territory, according to their geographic coordinates (i.e., longitude and latitude). The ANNs of the Multilayer Feed-Forward Perceptron (MLP) used are daily trained, along with data recorded in 53 agro-meteorological stations, and where the validation of the results is conducted in the station of Tordesillas (Valladolid). The ANN models for daily interpolation were tested with one, two, three, and four neurons in the hidden layer, over a period of 15 days (from 1 to 15 June 2020), with a root mean square error (RMSE, MJ/m2) of 1.23, 1.38, 1.31, and 1.04, respectively, regarding the daily global solar irradiation. The interpolation of ambient temperature also performed well when applying the VWS concept, with an RMSE (°C) of 0.68 for the maximum temperature with an ANN of four hidden neurons, 0.58 for the average temperature with three hidden neurons, and 0.83 for the minimum temperature with four hidden neurons. PB MDPI SN 1424-8220 YR 2022 FD 2022 LK https://uvadoc.uva.es/handle/10324/61575 UL https://uvadoc.uva.es/handle/10324/61575 LA eng NO Sensors, 2022, Vol. 22, Nº. 20, 7772 NO Producción Científica DS UVaDOC RD 28-nov-2024