Results and discussion

Results are structured as follows. Firstly, the sensitivity analysis is presented with discussions on model uncertainties (Section 3.1). Then, results for model calibration are presented, with discussions on how RS-based model calibration can improve discharge and the water cycle representation as a whole (Section 3.2).

Sensitivity analysis

A sensitivity analysis was carried out to understand how different parameter types (river hydraulic, soil, vegetation, and all together) affect the variation of different hydrological processes in MGB (Figure 3a). This was performed by analyzing the dispersion of six output variables (discharge, water level, flood extent, TWS anomalies, vegetation ET, and soil moisture). These results are also compared with an estimate of the uncertainties of observations (values provided in section 2.8 Calibration/Evaluation Data ), and are discussed in the subsequent sections.