Long term series of discharges distributed in the Congo River basin from hydrological modelling and satellite altimetry
Event: 2017 Ocean Surface Topography Science Team Meeting
Session: Science IV: 25 years of satellite altimetry for Cryosphere and Hydrology: from experimental to emerging operational applications
Presentation type: Type Poster
At the locations with available discharge data, the model was found to perform very well (Ens higher than 0.7 and volume error lower than 10%). The high quality of the RCs all over the basin showed that the TAPEER rainfall estimate used as input to the MGB-IPH model permitted to represent well the hydrological and hydrodynamic processes, even for the most upstream ungauged locations. Some discrepancies, observed in simulated discharges with other rainfall inputs, were discarded thanks to this dataset.
The Jason-2 RCs can now be used routinely to derive discharges in near real time (NRT) from forthcoming Jason-3 SWE observations, with a temporal sampling of one every 10 days and at almost a hundred of potential VSs. In addition, the combination with observations coming from former missions flying on the same orbits (T/P for Jason-2, ENVISAT and ERS-2 for SARAL) permitted to produce long term discharge time series, prerequisite for climate-change studies.