Anisa, K.; Dwiridal, L.; Amir, H.; Hidayati, H. The Sun’s Influence on Extreme Weather: A Study of Solar Declination and Sunlight Intensity on Rainfall Extremes in West Sumatra, July–December 2025. KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA 2026, 11, 83-92.