uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Modelling the chloride signal at Plynlimon, Wales, using a modified dynamic TOPMODEL incorporating conservative chemical mixing (with uncertainty)
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Air and Water Science. (Hydrologi)
2007 (English)In: Hydrological Processes, ISSN 0885-6087, E-ISSN 1099-1085, Vol. 21, no 3, 292-307 p.Article in journal (Refereed) Published
Abstract [en]

The application of a modified version of dynamic TOPMODEL for two subcatchments at Plynlimon, Wales is described. Conservative chemical mixing within mobile and immobile stores has been added to the hydrological model in an attempt to simulate observed stream chloride concentrations. The model was not fully able to simulate the observed behaviour, in particular the short- to medium-term dynamics. One of the primary problems highlighted by the study was the representation of dry deposition and cloud-droplet-deposited chloride, which formed a significant part of the long-term chloride mass budget. Equifinality of parameter sets inhibited the ability to determine the effective catchment mixing volumes and coefficients or the most likely partition between occult mass inputs and chloride mass inputs determined by catchment immobile-store antecedent conditions. Some success was achieved, in as much as some aspects of the dynamic behaviour of the signal were satisfactorily simulated, although spectral analysis showed that the model could not fully reproduce the 1/f power spectra of observed stream chloride concentrations with its implications of a wide distribution of residence times for water in the catchment.

Place, publisher, year, edition, pages
2007. Vol. 21, no 3, 292-307 p.
Keyword [en]
chloride, Plynlimon, dynamic TOPMODEL
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-15395DOI: 10.1002/hyp.6186OAI: oai:DiVA.org:uu-15395DiVA: diva2:43166
Available from: 2008-02-12 Created: 2008-02-12 Last updated: 2010-05-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full texthttp://www3.interscience.wiley.com/cgi-bin/abstract/112770126/ABSTRACT

Search in DiVA

By author/editor
Beven, Keith J
By organisation
Air and Water Science
In the same journal
Hydrological Processes
Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 130 hits
ReferencesLink to record
Permanent link

Direct link