2.3.1. Pre-Processing of DEM and GPM Datasets

Pre-processing is carried out by extracting geospatial variables, i.e., elevation, longitude, and latitude at 30 m resolution and the GPM-derived precipitation variables, i.e., the average winter, the average spring, the average summer, the average autumn, the average monthly, the average annual (2001–2015), the wet year (2004), and the dry year (2001) precipitation at 0.1◦ resolution into six different resolution scales (i.e., 0.25◦, 0.5◦, 0.75◦,1◦, 1.25◦and 1.50◦, respectively) by applying the pixel averaging, e.g., the Nearest Neighbor Method. Onward, each scaled image is to be converted into points (Figure S1) for further analysis.
