HESS Opinions

The need for process-based evaluation of large-domain hyper-resolution models

Journal article (2015)

Authors

L. A. Melsen Wageningen University & Research
Adriaan J. Teuling Wageningen University & Research
P. J. J. F. Torfs Wageningen University & Research
R. Uijlenhoet Wageningen University & Research
Naoki Mizukami University Corporation for Atmospheric Research
Martyn P. Clark University Corporation for Atmospheric Research
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Published Date

2015

Language

English

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Abstract

A meta-analysis on 192 peer-reviewed articles reporting applications of the Variable Infiltration Capacity (VIC) model in a distributed way reveals that the spatial resolution at which the model is applied has increased over the years, while the calibration and validation time interval has remained unchanged. We argue that the calibration and validation time interval should keep pace with the increase in spatial resolution in order to resolve the processes that are relevant at the applied spatial resolution. We identified six time concepts in hydrological models, which all impact the model results and conclusions. Process-based model evaluation is particularly relevant when models are applied at hyper-resolution, where stakeholders expect credible results both at a high spatial and temporal resolution.