*2.3. Methodology*

In this research, a new downscaling methodology (Figure 1) based on the weighted precipitation is presented, at a regional scale, to downscale the multitemporal GPM data in the humid region ofMainland China. To execute the proposed algorithm, a two-stepped methodology is developed to successfully predict and downscale the investigated precipitation variables at a finer scale: first, to evaluate the relationship between each individual precipitation variable and the EDBF-based weighted precipitation with geospatial predictor(s) through regression models; and second, to downscale the predicted multitemporal weighted precipitation at a refined scale.
