|DOI / URL||link|
|Title (Primary)||Regional analysis of parameter sensitivity for simulation of streamflow and hydrological fingerprints|
|Author||Höllering, S.; Wienhöfer, J.; Ihringer, J.; Samaniego, L.; Zehe, E.;|
|Journal||Hydrology and Earth System Sciences|
|POF III (all)||T34; T53;|
|UFZ wide themes||RU2;|
|Abstract||Diagnostics of hydrological models are pivotal
for a better understanding of catchment functioning, and the analysis
of dominating model parameters plays a key role for region-specific
calibration or parameter transfer. A major challenge in the analysis of
parameter sensitivity is the assessment of both temporal and spatial
differences of parameter influences on simulated streamflow response. We
present a methodological approach for global sensitivity analysis of
hydrological models. The multilevel approach is geared towards
complementary forms of streamflow response targets, and combines
sensitivity analysis directed to hydrological fingerprints, i.e.
temporally independent and temporally aggregated characteristics of
streamflow (INDPAS), with the conventional analysis of the temporal
dynamics of parameter sensitivity (TEDPAS).
The approach was tested in 14 mesoscale headwater catchments of the Ruhr River in western Germany using simulations with the spatially distributed hydrological model mHM. The multilevel analysis with diverse response characteristics allowed us to pinpoint parameter sensitivity patterns much more clearly as compared to using TEDPAS alone. It was not only possible to identify two dominating parameters, for soil moisture dynamics and evapotranspiration, but we could also disentangle the role of these and other parameters with reference to different streamflow characteristics. The combination of TEDPAS and INDPAS further allowed us to detect regional differences in parameter sensitivity and in simulated hydrological functioning, despite the rather small differences in the hydroclimatic and topographic setting of the Ruhr headwaters.
|Persistent UFZ Identifier||https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=19789|
|Höllering, S., Wienhöfer, J., Ihringer, J., Samaniego, L., Zehe, E. (2018):
Regional analysis of parameter sensitivity for simulation of streamflow and hydrological fingerprints
Hydrol. Earth Syst. Sci. 22 (1), 203 - 220