SPI-gamma random forest modelling for meteorological drought characterization and prediction in the Bengal Delta, Indo-Bangladesh region - Biplab Sarkar; Sekh Mohinuddin; Aznarul Islam; Abu Reza Md. Towfiqul Islam; Ujwal Deep Saha; Soumita Sengupta; Subodh Chandra Pal; Hone-Jay Chu; Jr-Chuan Huang (Theoretical and Applied Climatology, 2025)