En este trabajo se validan las estimaciones de irradiancia solar de los modelos satelitales Heliosat-4 y CIM-ESRA para la Pampa Húmeda utilizando las mediciones terrestres de 4 estaciones solarimétricas de la región, 2 de Argentina y 2 de Uruguay. Los modelos son de diferente naturaleza y están basados en diferentes satélites, el Meteosat Second Generation (MSG) y GOES-East (GOES16). La evaluación se realiza a escala 10-minutal para toda condición de cielo y para muestras con índice de claridad alto (a lo que llamaremos condiciones de cielo mayoritariamente despejado).Se utilizan métricas de desempeño estándar y se evalúan las versiones operativas de ambos modelos. Se encontró un mejor desempeño para el modelo CIM-ESRA, observándose resultados similares en los sitios para los cuáles los parámetros de este modelo fueron ajustados yen sitios independientes.

In this work, the solar irradiance estimates of the Heliosat-4 and CIM-ESRA satellite models are validated for the Pampa Húmeda region using ground measurements from 4 solarimetric stations, 2 in Argentina and 2 in Uruguay. The models are of a different nature (physical vs. semi-empirical) and are based, respectively, on the Meteosat Second Generation (MSG) and GOES-East (GOES16) satellites. The evaluation is performed on a 10-minute time scale for all-sky conditions and for samples with high clarity index (which we will call mostly clear-sky conditions). The evaluation is done by using standard performance metrics and the operational versions of both models are assessed. A better performance was found for the CIM-ESRA model, and similar results were observed at stations where the model’s parameters were adjusted and at independent stations, where the model was not specifically trained.