Mapping Drought Severity Based on Sentinel-2 Harmonized Data Using Google Earth Engine Septianto Aldiansyah, Amniar Ati, Andi Sulia Sudirman, Nur Hasanah Jurnal Penelitian Pendidikan Geografi Vol. 11 No. 1 2026 DOI 10.36709/jppg.v11i1.732