Bezerra, Bergson GuedesLucas, Alanderson Firmino2018-02-152021-09-292018-02-152021-09-292017-12-08LUCAS, Alanderson Firmino de. Estimativa de irradiação solar via modelos empíricos com base na temperatura do ar para o Nordeste brasileiro. 2017. 65f. Trabalho de Conclusão de Curso (Graduação em Meteorologia) - Departamento de Ciências Atmosféricas e Climáticas, Universidade Federal do Rio Grande do Norte, Natal - RN, 2017.https://repositorio.ufrn.br/handle/123456789/40275Due to the extreme importance of using solar radiation information in agriculture, water resources, elaboration of architectural projects, climate change studies and in renewable energies through the evaluation of the potential of the solar resource in areas such as the Brazilian Northeast that presents high incidence of solar radiation throughout the year. The global solar irradiance (Rg) constitutes the main source of energy for life our planet and drives the hydrologic, energy and carbon cycles in the Earth-Atmosphere system. However, despite all the above-mentioned importance, the measurements of Rg are relatively scarce, causing irregular spatial distribution of observations, this is due to the high costs with the constant need of maintenance and calibration of the measuring devices, giving greater propensity to errors in the observation of the global solar radiation compared to other meteorological elements, being necessary regularly the quality control on the data of Rg. As a result, several empirical models have been proposed and used more often, especially, those that perform the estimative having the air temperature as input data, but for these models present satisfactory performance, they must be previously calibrated, that is, their respective empirical coefficients must be determined from local observations. In this context, the present work aims to calibrate and evaluate the performance of the Rg estimative from six models based on the air temperature observed in 128 automatic surface weather stations located in the Northeast region of Brazil, after the calibration process is intended to compare the estimates with observed values from a different period than the models were calibrated, in addition to apply the best model on regional scale with a set of high resolution interpolated data for maximum and minimum temperature. The structure of the original Bristow and Campbell model allows satisfactory representation of global solar irradiation in both coastal and inland areas, as observed in most Data Collection Platforms.openAccessIrradiação Solar GlobalModelos EmpíricosCoeficientesCalibraçãobachelorThesis