Hydrological model parameter (in)stability
- This paper investigates the transferability of calibrated HBV model parameters under stable and contrasting conditions in terms of flood seasonality and flood generating processes (FGP) in five Norwegian catchments with mixed snowmelt/rainfall regimes. We apply a series of generalized (differential) split-sample tests using a 6-year moving window over (i) the entire runoff observation periods, and (ii) two subsets of runoff observations distinguished by the seasonal occurrence of annual maximum floods during either spring or autumn. The results indicate a general model performance loss due to the transfer of calibrated parameters to independent validation periods of −5 to −17%, on average. However, there is no indication that contrasting flood seasonality exacerbates performance losses, which contradicts the assumption that optimized parameter sets for snowmelt-dominated floods (during spring) perform particularly poorly on validation periods with rainfall-dominated floods (during autumn) and vice versa.
Author details: | Klaus Josef VormoorORCiDGND, Maik HeistermannORCiDGND, Axel BronstertORCiDGND, Deborah Lawrence |
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URN: | urn:nbn:de:kobv:517-opus4-413008 |
Title of parent work (English): | Hydrological Sciences Journal |
Subtitle (English): | “crash testing” the HBV model under contrasting flood seasonality conditions |
Publication series (Volume number): | Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (459) |
Publication type: | Postprint |
Language: | English |
Date of first publication: | 2018/07/13 |
Publication year: | 2018 |
Publishing institution: | Universität Potsdam |
Release date: | 2018/07/13 |
Tag: | Nordic catchments; differential split-sample test; flood generating processes; flood seasonality; hydrological modelling |
Number of pages: | 18 |
Source: | Hydrological Sciences Journal 63 (2018) Nr. 7, S. 991-1007 DOI: 10.1080/02626667.2018.1466056 |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät |
DDC classification: | 5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften |
Peer review: | Referiert |
Publishing method: | Open Access |
Grantor: | Taylor & Francis Open Access Agreement |
License (German): | CC-BY - Namensnennung 4.0 International |
External remark: | Bibliographieeintrag der Originalveröffentlichung/Quelle |