Comparison of the variances of a lumped and semi-distributed model parameters

Rok, strany: 2020, 172 - 177

The accurate modelling of discharges in catchments plays an important role in solving a large variety of water management tasks. Three basic errors may affect the outputs modelled: the quality of the input data, uncertainities about the parameters, and the structure of the model. This paper is focused on a comparison of the performances of the lumped and semi-distributed versions of the conceptual TUW rainfall-runoff model, which represents two different model structures. The comparison took place on 180 Austrian catchments, which have variable morphologies, altitudes, land uses, etc. We focused on the variability of the efficiencies and parameters of both types of HBV models, which were calibrated based on discharges in the period from 1991 to 2000. Whether the morphology and mean elevation of the catchment affect the calibration results was also take in account. Finally, we realized that the semi-distributed version of the TUW model gave better results as to the calibration efficiencies, when we calibrated the model for discharges; at the same time, the variations in the model parameters also gave better results in the semi-distributed version of the TUW model.

ISO 690:

Brziak, A., Kubáň, M., Kohnová, S., Szolgay, J. 2020. Comparison of the variances of a lumped and semi-distributed model parameters. In Acta Hydrologica Slovaca, vol. 21, no.2, pp. 172-177. 2644-4690. DOI: https://doi.org/10.31577/ahs-2020-0021.02.0021

APA:

Brziak, A., Kubáň, M., Kohnová, S., Szolgay, J. (2020). Comparison of the variances of a lumped and semi-distributed model parameters. Acta Hydrologica Slovaca, 21(2), 172-177. 2644-4690. DOI: https://doi.org/10.31577/ahs-2020-0021.02.0021

Vydavateľ: Institute of Hydrology SAS, Dúbravská cesta 9, 841 05 Bratislava, Slovakia