DREAM: a distributed model for runoff, evapotranspiration, and antecedent soil moisture simulation

摘要

The paper introduces a semi-distributed hydrological model, suitable forcontinuous simulations, based upon the use of daily and hourly time steps.The model is called Distributed model for Runoff,Evapotranspiration, and Antecedent soil Moisture simulation (DREAM). It includes a daily water budget andan "event scale" hourly rainfall-runoff module. The two modules may beused separately or in cascade for continuous simulation. The main advantagesof this approach lay in the robust and physically based parameterization,which allows use of prior information and measurable data for parameterestimation.

The proposed model was applied over four medium-sized basins in southernItaly, exhibiting considerable differences in climate and other physicalcharacteristics. The capabilities of the two modules (daily and hourly) andof the combined runs were tested against measured data.