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Nitrogen retention in a river system and the effects of river morphology and lakes
SMHI.
SMHI, Research Department, Hydrology.ORCID iD: 0000-0001-8314-0735
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2005 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 51, no 3-4, 19-29 p.Article in journal (Refereed) Published
Abstract [en]

The mean annual transfer (loss and retention) of nitrogen in a river system was estimated using a conceptual approach based on water surface area and runoff. Two different approaches for the calculation of water surface area were applied to determine riverine nitrogen retention in four European catchments, ranging between 860-14,000 km(2) in area, and differing considerably in the proportion and distribution of surface waters, specific runoff and specific nutrient emissions. The transfer rate was estimated sequentially as either the mean value for the total catchment, on a sub-catchment scale, or considering the distribution of water surface area within a sub-catchment. For the latter measure, nitrogen retention in larger lakes was calculated separately. Nitrogen emissions modelled with MONERIS and HBV-N were used to calculate nitrogen river loads and compare those with observed loads. Inclusion of the proportion of water area within a sub-catchment improved modelled results in catchment with large lakes in sub-catchments, but not where there was a homogenous distribution of surface waters among sub-catchments.

Place, publisher, year, edition, pages
2005. Vol. 51, no 3-4, 19-29 p.
Keyword [en]
emissions, hydraulic load, nitrogen, retention, water surface area
National Category
Oceanography, Hydrology, Water Resources
Research subject
Hydrology
Identifiers
URN: urn:nbn:se:smhi:diva-1292ISI: 000228827100005PubMedID: 15850170OAI: oai:DiVA.org:smhi-1292DiVA: diva2:818661
Conference
7th IWA International Specialised Conference on Diffuse Pollution and Basin Management, AUG 17-21, 2003, Dublin, IRELAND
Available from: 2015-06-09 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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