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Pareto-optimal calibration for multiple hydrological signatures and spatio-temporal patterns |
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- Project P3 aims at improving the simulation of continental water cycle dynamics by a multi-objective calibration scheme for WaterGAP following the principle of Pareto optimality.
- The Pareto-optimal calibration (POC) approach should consider more than two objective functions for calibration, considering the various observational data sets developed in this Research Unit.
- Adequate hydrological signatures and quantitative performance criteria to consider the dominant spatial patterns of total water storage variations shall be developed and used for calibration.
- Adequate or deficient WaterGAP model structures and model uncertainties can be explored by the trade-offs among different objective functions within the POC framework.
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| Example of a Pareto plot for the calibration of WaterGAP with four observables (river discharge, total water storage, surface water storage, evapotranspiration) | Seasonal dynamics of total water storage, simulated with different WaterGAP runs that were calibrated against different observables |