Applications of Scientific Modeling of Hydrologic Responses from Hypothetical Small Catchments to Assess a Complex Conceptual Rainfall-Runoff Model

摘要

Conceptual rainfall-runoff (r-r) models, which have been used extensively for simulating catchment streamflow, have limitations when operated beyond the range of calibration or validation experience; there is no guarantee that they will predict runoff accurately. This potential shortcoming is investigated by evaluating objectively, in prediction and forecasting modes, the performance of an explicit soil moisture-accounting model, the Sacramento model (SMA) of the U.S. National Weather Service. The evaluation process uses streamflow data generated by a hillslope r-r causal model which can simulate interdependent surface and subsurface hydrologic processes precisely for hypothetical small catchments.