| dc.description.abstract | Over the years, there has been an increase in population growth rate and improved quality of life. In the search for energy alternatives to meet current and future demand for energy, photovoltaic solar energy emerges as a solution. So, the present work presents the study and analysis of simulated solar spectra aiming to show that the values measured in the soil by the spectroradiometer (Cachoeira Paulista / São Paulo) are similar to the values obtained by the SMARTS simulation software, as well as to identify if there are variations in the curves obtained for eighteen cities in the State of Rio Grande do Sul. The methodology consists in comparing and analyzing field-measured data with simulated data (SMARTS v.2.9.5) for a city in the State of São Paulo; and obtaining instantaneous irradiance values (global and direct component) for the solstices and equinox months considering: slope with the surface equal to zero, air mass at 12 o'clock on the average day of the month under analysis and the mean atmospherics parameters values of the month. The results related to the comparison between the data measured by a spectroradiometer and the data simulated by SMARTS show a consistency rate of 87,33 ± 2%. In the analysis of variation, it can be seen that among the wavelengths from 390 to 770 nm there is less oscillation between the simulated data and measured in soil. Still, the instantaneous irradiance values obtained for the municipalities did not show significant variations, which was expected considering the solar map of the State of Rio Grande do Sul, and therefore, a spectrum was generated from the average of these eighteen cities. In conclusion, there is no similarity between the values of the atmosphere parameters used by the reference spectra within the values found for the State of São Paulo, State of Rio Grande do Sul, or any part of the Brazilian territory and finally, the simulations were shown
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