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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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https://doi.org/10.5194/hess-2017-401
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-2017-401
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: research article 21 Aug 2017

Submitted as: research article | 21 Aug 2017

Status
This preprint has been retracted.

Assessing reliability of hydrological simulations through model intercomparison at the local scale in the Everest region

Judith Eeckman1, Santosh Nepal2, Pierre Chevallier1, Gauthier Camensuli1, Francois Delclaux1, Aaron Boone3, and Anneke De Rouw4 Judith Eeckman et al.
  • 1Laboratoire HydroSciences (CNRS, IRD, Universite de Montpellier) CC 57 – Universite de Montpellier 163, rue Auguste Broussonnet 34090 Montpellier, France
  • 2International Centre for Integrated Mountain Development (ICIMOD), GPO Box 3226, Kathmandu, Nepal
  • 3CNRM UMR 3589, Meteo-France/CNRS, Toulouse, France
  • 4Institut d’Ecologie et des Sciences d’Environnement de Paris (IRD, UPMC), 4place Jussieu, 75252 Paris cedex 5, France

Abstract. Understanding hydrological processes of high-altitude areas is vital because downstream communities depend on water resources for their livelihood. This paper compares the hydrological responses at the local scale of two models using different degrees of refinement to represent physical processes in sparsely instrumented mountainous Himalayan catchments. Two small catchments located in mid- and high- mountain environments were chosen to represent the very different climatic and physiographic characteristics of the Central Himalayas in the Everest region of eastern Nepal. This work presents the novelty of applying, at a small spatio-temporal scale and under the same forcing conditions, a fully distributed surface scheme based on mass and energy balance equations (ISBA surface scheme), and a semi-distributed calibrated model (J2000 hydrological model). A new conceptual module coupled to the ISBA surface scheme for flow routing is presented. The results show that both models describe the evapotranspiration, quick runoff and discharge processes in a similar way. The reliability of the simulations for these variables can therefore be considered as satisfactory. The differences in the structure and results of the two models mainly concern the water storage and flows in the soil, in particular for the high-mountain catchment. This conclusion suggests that the uncertainty associated with model structure is significant for water storage and flow in the soil.

This preprint has been retracted.

Judith Eeckman et al.

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Judith Eeckman et al.

Judith Eeckman et al.

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Short summary
This paper compares the simulation of water cycle obtained using two different hydrological models in two small mountainous Himalayan catchments. The reliability of the simulations for evapotranspiration, discharge can therefore be considered as satisfactory. The differences in the structure and results of the two models mainly concern the water storages and flows in the soil, in particular in high-mountain environment.
This paper compares the simulation of water cycle obtained using two different hydrological...
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