Adequacy of Near Real-Time Satellite Precipitation Products in Driving Flood Discharge Simulation in the Fuji River Basin, Japan

Flood management is an important topic worldwide. Precipitation the most crucial factor in reducing flood-related risks and damages. However, its adequate quality sufficient quantity are not met many parts of world. Currently, near real-time satellite precipitation products (NRT SPPs) have great potential to supplement gauge rainfall. NRT SPPs several biases that require corrections before application. As a result, this study investigated two statistical bias correction methods with different parameters for evaluated adequacy application Fuji River basin. We employed Global Satellite Mapping (GSMaP)-NRT Integrated Multi-satellitE Retrievals GPM (IMERG)-Early as well BTOP model (Block-wise use TOPMODEL (Topographic-based hydrologic model)) flood runoff simulation. The results showed corrected by 10-day ratio based method consistent data at watershed scale. Compared original SPPs, improved discharge simulation considerably. GSMaP-NRT IMERG-Early hourly river-flow on basin or large scale after correction. These findings can provide references applications other basins monitoring early warning applications. It necessary investigate impact number ground observation their distribution patterns hydrological efficiency, which future direction study.