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Parameter precision in the HBV-NP model and impacts on nitrogen scenario simulations in the Ronnea River, Southern Sweden
SMHI, Research Department, Hydrology.
SMHI, Research Department, Hydrology.
SMHI, Research Department, Hydrology.ORCID iD: 0000-0001-8314-0735
2005 (English)In: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 34, no 7, 533-537 p.Article in journal (Refereed) Published
Abstract [en]

The HBV-NP model is a newly developed water quality model that describes the turnover and fluxes of both nitrogen and phosphorous. It is based on the conceptual precipitation/runoff HBV model. The HBV-NP model was applied for simulation of nitrogen for the Ronnea catchment in southern Sweden. The catchment was divided into 64 subcatchments in the model. Discharge measurements from six stations and nitrogen measurements from 12 stations were used in the calibration of parameters in the model. Eight automatic calibrations were performed with different combinations of time periods, objective functions, and levels of the nitrogen load in the model. A regionally extended interpretation of the Nash-Sutcliffe R-2 criterion was used in the calibration. In the evaluation of the criterion, the errors were summed over both time steps and sampling points. Scenario simulations of combined measures for reduction of nitrogen load into the sea by 30% were thereafter performed with the eight sets of parameters established by calibration. The model parameters were not uniquely defined by the calibration. However, the simulated relative reduction of nitrogen load into the sea was relatively insensitive to the choice of parameter set, given the available input sources, variables, and data.

Place, publisher, year, edition, pages
2005. Vol. 34, no 7, 533-537 p.
National Category
Oceanography, Hydrology, Water Resources
Research subject
Hydrology
Identifiers
URN: urn:nbn:se:smhi:diva-1257DOI: 10.1639/0044-7447(2005)034[0533:PPITHM]2.0.CO;2ISI: 000233522100008PubMedID: 16435742OAI: oai:DiVA.org:smhi-1257DiVA: diva2:843490
Available from: 2015-07-29 Created: 2015-05-26 Last updated: 2016-03-29Bibliographically approved

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CiteExportLink to record
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Citation style
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