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| Titel |
The Wageningen Lowland Runoff Simulator (WALRUS): a lumped rainfall–runoff model for catchments with shallow groundwater |
| VerfasserIn |
C. C. Brauer, A. J. Teuling, P. J. J. F. Torfs, R. Uijlenhoet |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 7, no. 5 ; Nr. 7, no. 5 (2014-10-10), S.2313-2332 |
| Datensatznummer |
250115735
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| Publikation (Nr.) |
 copernicus.org/gmd-7-2313-2014.pdf |
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| Zusammenfassung |
| We present the Wageningen Lowland Runoff Simulator (WALRUS), a novel
rainfall–runoff model to fill the gap between complex, spatially
distributed models which are often used in lowland catchments and
simple, parametric (conceptual) models which have mostly been developed for
sloping catchments. WALRUS explicitly accounts for processes
that are important in lowland areas, notably (1)
groundwater–unsaturated zone coupling, (2) wetness-dependent flow
routes, (3) groundwater–surface water feedbacks and (4) seepage and
surface water supply. WALRUS consists of a coupled
groundwater–vadose zone reservoir, a quickflow reservoir and
a surface water reservoir. WALRUS is suitable for operational use
because it is computationally efficient and numerically stable
(achieved with a flexible time step approach). In the open source
model code default relations have been implemented, leaving only
four parameters which require calibration. For research purposes,
these defaults can easily be changed. Numerical experiments show
that the implemented feedbacks have the desired effect on the system
variables. |
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