Utomo, Joko Budi, et al. “Developing Surface Rainfall Data Based on Blending of Satellite-Based Products and Rain Gauge Observations in the Ngawi Region, East Java”. JURNAL ILMU FISIKA | UNIVERSITAS ANDALAS, vol. 17, no. 2, May 2025, pp. 110-24, doi:10.25077/jif.17.2.110-124.2025.