Title of article :
Application of generic data assimilation tools (DATools) for flood forecasting purposes
Author/Authors :
Weerts، نويسنده , , Albrecht H. and El Serafy، نويسنده , , Ghada Y. and Hummel، نويسنده , , Stef and Dhondia، نويسنده , , Juzer and Gerritsen، نويسنده , , Herman، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Abstract :
This paper describes the generic data assimilation software tool DATools. DATools can be used as standalone or within Delft-FEWS. DATools is completely configurable via XML configuration. DATools is built up of three components: a Filter, a Stochastic Modeler, and a Stochastic Observer. Configuration of all these three parts is explained in detail. At the moment two data assimilation filters are available within DATools: (1) ensemble Kalman Filter and (2) the residual resampling filter. Results of a twin experiment with both filters with DATtools show similar results as a previous study performed with custom implementations. It is also shown that DATools can function inside Delft-FEWS software used for operational flood forecasting. Applying EnKF to a 1D hydrodynamic SOBEK-RE model of the river Rhine within the operational system FEWS-NL Rhine and Meuse improves the forecasts at the Lobith gaugin station and downstream of Lobith. DATools has been coupled with the HBV-96, SOBEK, and REW models and will be coupled to MODFLOW, Delft-3D, and the geotechnical model MSetlle in the near future. Uncertainty analysis with this tool is also possible and calibration will be added later this year.
Keywords :
Data assimilation , Hydrology , Ensemble Kalman filter , Residual resampling filter , Operational system , Delft-FEWS
Journal title :
Computers & Geosciences
Journal title :
Computers & Geosciences