Brazilian Database for Solar Irradiation Assessment

Costa, Rodrigo Santos, Goncalves, Andre Rodrigues, Zarzur, Antonio Mauricio, Siqueira, Ricardo Almeida, Rocha, Vinicius Roggerio, Pereira, Enio Bueno, Pes, Marcelo Pizzuti, Machado, Guilherme Baggio Martins, Casagrande, Madeleine Sánchez Gácita, Lima, Francisco José Lopes, Martins, Fernando Ramos

ISES Solar World Congress 2025 · Fortaleza, Brazil · 2025-11-03
Published by International Solar Energy Society (ISES)
DOI: 10.18086/swc.2025.04.08

Abstract

Scenarios associated with climate change have highlighted the need for adaptation and mitigation measures, including the planning of low-carbon electric and energy matrices that enhance energy security. In the case of solar energy, there is a clear demand for understanding the resource’s availability and variability. LABREN/INPE has provided such information for about 20 years via the satellite-based BRASIL-SR model, which has undergone several upgrades since the last edition of the Brazilian Atlas of Solar Energy (Pereira et al., 2017). This study presents the preliminary outcomes of these improvements, including a recent enhancement in determining effective cloud cover. The results show significant advances, such as reduced bias - even under high aerosol concentrations - and a greater spatial features detail.

Keywords

solar radiation assessment, radiative transfer model, solar irradiation database

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