Journal
HYDROLOGY AND EARTH SYSTEM SCIENCES
Volume 19, Issue 6, Pages 2911-2924Publisher
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/hess-19-2911-2015
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- Flood Control program
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This study investigates the suitability of the asynchronous ensemble Kalman filter (AEnKF) and a partitioned updating scheme for hydrological forecasting. The AEnKF requires forward integration of the model for the analysis and enables assimilation of current and past observations simultaneously at a single analysis step. The results of discharge assimilation into a grid-based hydrological model (using a soil moisture error model) for the Upper Ourthe catchment in the Belgian Ardennes show that including past predictions and observations in the data assimilation method improves the model forecasts. Additionally, we show that elimination of the strongly non-linear relation between the soil moisture storage and assimilated discharge observations from the model update becomes beneficial for improved operational forecasting, which is evaluated using several validation measures.
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