Estimation of global daily irradiation in complex topography zones using digital elevation models and meteosat images: Comparison of the results

摘要: The knowledge of the solar irradiation in a certain place is fundamental for suitable location systems, both thermal and photovoltaic. On local scale, topography most important modulating factor on surface. In this work global daily estimated concerning various sky conditions, zones complex topography. order to estimate we use methodology based Digital Terrain Model (DTM), one hand making pyranometer measurements other utilizing satellite images. We underline that DTM application employing produces better results than estimation using images, though accuracy same obtained cases Root Mean Square Error (RMSE) Bias (MBE).