Assessment of an Alternative Climate Product for Hydrological Modeling: A Case Study of the Danjiang River Basin, China

Precipitation has been recognized as the most critical meteorological parameter in hydrological studies. Recent developments space technology provide cost-effective alternative ground-based observations to simulate process. Here, this paper aims evaluate performance of satellite-based datasets modeling a sensitive area terms water quality and safety watershed. Three precipitation products, i.e., rain gauge (RO), China Meteorological Assimilation Driving Datasets for SWAT model (CMADS), Tropical Rainfall Measuring Mission Multi-satellite (TRMM) were used develop Soil Water Assessment Tool (SWAT) streamflow Danjiang River Basin (DRB). The results show that: (1) these three products have similar with regard monthly time scale compared daily scale; (2) CMADS TRMM performed better than RO runoff simulations. is more accurate dataset when combined data; (3) indicate that provides reliable on both scales, possible climate product developing DRB. This study expected serve reference choosing watersheds DRB where data are limited.