Fitting of Hydrologic Models: A Close Look at the Nash–Sutcliffe Index
2008; American Society of Civil Engineers; Volume: 13; Issue: 10 Linguagem: Inglês
10.1061/(asce)1084-0699(2008)13
ISSN1943-5584
AutoresSharad K. Jain, K. P. Sudheer,
Tópico(s)Hydrological Forecasting Using AI
ResumoQuantitative assessments of the degree to which the modeled behavior of a system matches with the observations provide an evaluation of the model’s predictive abilities. In this context, the Nash–Sutcliffe efficiency index is widely used in water resources sector to assess the performance of a hydrologic model. Through a series of results, this technical note demonstrates that this index alone is not adequate in describing the performance of a model. It is shown that relatively poor models can give a high value of the index and vice-versa. Thus, it is advisable to employ the other statistical measures before arriving at a definite conclusion about the performance of a hydrologic model.
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