Algorithms of Automatic Calibration of Multi-parameter Models Used in Operational Systems of Flash Flood Forecasting

V. A. Kuzmin

In the second article of the serie, new tools of fast and effective automatic calibration of multi-parameter hydrological models are presented. In particular, it is shown that the basic method, the Stepwise Line Search (SLS), two its modifications (SLS-F and SLS-2L) and their combination (SLS- 2LF) can be used in automated systems of operational flash flood forecasting where computational efficiency is critical due to a great number of catchments that should be calibrated. Results of implementation of the SLS-based calibration procedures for parametrization of the Sacramento Soil Moisture Accounting Model, which demonstrate their high effectiveness and efficiency, are shown.