Effect of grid size on effective parameters and model performance of the MIKE‐SHE code

Abstract:

The present study discusses the application of the physically based distributed MIKE‐SHE code to a medium size catchment using different grid sizes to investigate scale effects on the model results. First a 600 m grid‐square model was calibrated. This was then subjected to a multi‐resolution (MR) validation test by using the effective parameters of the calibrated model in a 300 m and a 1200 m grid‐square model. The MR test indicated that the models for the resolutions analysed only differ marginally. Secondly, the effect of grid size on both the calibrated effective model parameters and the model performance was analysed in the scope of a multi‐calibration test in which the calibration and validation processes were kept as unique and standard as possible for every grid size. The model was calibrated and validated for every grid size against both daily catchment discharge measurements and observed water …

Año de publicación:

2002

Keywords:

Fuente:

google