How much can we gain with increasing model complexity with the same model concepts?

JOURNAL OF HYDROLOGY

卷:527

Article

Li, Hong¹  Xu, C-Y.¹  Beldring, Stein² 

[1] Univ Oslo, Dept Geosci, N-0316 Oslo, Norway

[2] Norwegian Water Resources & Energy Directorate, Oslo, Norway

关键词: Distributed models;    HBV;    Internal variables;    Lumped model;    Model comparison;   

DOI  :  10.1016/j.jhydrol.2015.05.044

来源: Elsevier

【 摘 要 】

The main purpose of this study is to test the hypothesis that, with appropriate structures, increasing model complexity with the same model concepts would lead to an increase in the model efficiency in simulating either runoff or internal variables. Five variants of the Hydrologiska Byrans Vattenbalansavdelning (HBV) model, i.e. a lumped model (LWhole), a semi-distributed model (SBand), a grid-model without routing (GRZero), a grid-model with hillslope routing (GROne), and a grid-model with both hillslope and channel routing (GRTwo) are compared in a cold and mountainous catchment in central southern Norway. The five models are compared with respects to (1) runoff simulation at the catchment outlet and the interior points, and (2) simulations of internal variables, i.e. evapotranspiration, snow water equivalent and groundwater depth. The results show that the models with higher complexity can improve the runoff simulation both at the catchment outlet and the interior points. However, there is no superiority of complex grid-models over simple grid-models in reproducing internal variables in this study. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license

【 授权许可】

Free