Validation of Satellite-based and Gridded Precipitation Products for Gap-filling in Precipitation Series in the Eastern Amazon
Giselle Nerino Brito de Souza·Alessandro Carioca de Araújo·Kaleb Lima Ribeiro·Leonardo Ramos de Oliveira·Paulo Ricardo Teixeira da Silva·Débora Cristina Castellani·Júlio Sílvio de Sousa Bueno Filho·Alailson Venceslau Santiago·Steel Silva Vasconcelos·Wenceslau Geraldes Teixeira·Julie Andrews de França e Silva
Accurate precipitation measurement is essential for climate, hydrological, and agronomic studies. However, in regions such as the Amazon, the scarcity of rain gauges and frequent gaps in historical series pose a significant challenge for long-term analyses. This study evaluated the performance of satellite and gridded precipitation estimates for gap-filling daily rainfall data recorded between 2019 and 2024. The observed dataset was obtained from a micrometeorological tower installed in an oil p