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| 001 | 820862 | ||
| 005 | 20210129224627.0 | ||
| 024 | 7 | _ | |a 10.1016/j.jhydrol.2016.03.020 |2 doi |
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| 100 | 1 | _ | |a Fang, Zhufeng |0 P:(DE-Juel1)156360 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Scale dependent parameterization of soil hydraulic conductivity in 3D simulation of hydrological processes in a forested headwater catchment |
| 260 | _ | _ | |a Amsterdam [u.a.] |c 2016 |b Elsevier |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a In distributed hydrological modelling one often faces the problem that input data need to be aggregated to match the model resolution. However, aggregated data may be too coarse for the parametrization of the processes represented. This dilemma can be circumvented by the adjustment of certain model parameters. For instance, the reduction of local hydraulic gradients due to spatial aggregation can be partially compensated by increasing soil hydraulic conductivity. In this study, we employed the information entropy concept for the scale dependent parameterization of soil hydraulic conductivity. The loss of information content of terrain curvature as consequence of spatial aggregation was used to determine an amplification factor for soil hydraulic conductivity to compensate the resulting retardation of water flow. To test the usefulness of this approach, continuous 3D hydrological simulations were conducted with different spatial resolutions in the highly instrumented Wüstebach catchment, Germany. Our results indicated that the introduction of an amplification factor can effectively improve model performances both in terms of soil moisture and runoff simulation. However, comparing simulated soil moisture pattern with observation indicated that uniform application of an amplification factor can lead to local overcorrection of soil hydraulic conductivity. This problem could be circumvented by applying the amplification factor only to model grid cells that suffer from high information loss. To this end, we tested two schemes to define appropriate location-specific correction factors. Both schemes led to improved model performance both in terms of soil water content and runoff simulation. Thus, we anticipate that our proposed scaling approach is useful for the application of next-generation hyper-resolution global land surface models |
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| 700 | 1 | _ | |a Bogena, Heye |0 P:(DE-Juel1)129440 |b 1 |
| 700 | 1 | _ | |a Kollet, Stefan |0 P:(DE-Juel1)151405 |b 2 |
| 700 | 1 | _ | |a Vereecken, Harry |0 P:(DE-Juel1)129549 |b 3 |
| 773 | _ | _ | |a 10.1016/j.jhydrol.2016.03.020 |g Vol. 536, p. 365 - 375 |0 PERI:(DE-600)1473173-3 |p 365 - 375 |t Journal of hydrology |v 536 |y 2016 |x 0022-1694 |
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