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| Titel |
Catchments as simple dynamical systems: uncertainty, calibration and catchment characteristics |
| VerfasserIn |
A. J. Teuling, S. W. van Berkum, R. Uijlenhoet, S. I. Seneviratne, I. Lehner |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250064383
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| Zusammenfassung |
| Considering catchments as simple dynamical systems is a promising approach to model
rainfall-runoff dynamics in small catchments. This approach uses the storage-discharge
relation as the main component of the rainfall-runoff model. This is the basis of our simple
non-linear model, which can be used for small catchments in temperate climates. The
storage-discharge function in the model can be obtained through recession analysis on the
discharge time-series or through calibration of the whole model. However, the frequency,
length, and resolution of the discharge observations available for estimating the
storage discharge relation can have a large impact upon the accuracy of the model
predictions. We investigate the accuracy of model simulations with parameters derived
from:
calibration of the model,
recession analysis,
catchment characteristics and the boussinesq equation.
In the evaluation of the model simulations, special emphasis is put on the ability of the model to
correctly simulate yearly high and low flows. In the current study, we focus on the
Rietholzbach catchment located in the pre-alpine North-East of Switzerland. Further research
will include analysis of multiple catchments to investigate the applicability of this approach
for ungauged basins. |
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