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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/hessd-10-11983-2013
https://doi.org/10.5194/hessd-10-11983-2013

  01 Oct 2013

01 Oct 2013

Review status: this discussion paper is a preprint. It has been under review for the journal Hydrology and Earth System Sciences (HESS). The manuscript was not accepted for further review after discussion.

Senstitivity of water balance components to environmental changes in a mountainous watershed: uncertainty assessment based on models comparison

E. Morán-Tejeda1, J. Zabalza2, K. Rahman1, A. Gago-Silva1, J. I. López-Moreno2, S. Vicente-Serrano2, A. Lehmann1, C. L. Tague3, and M. Beniston1 E. Morán-Tejeda et al.
  • 1Institute for Environmental Studies, University of Geneva, Switzerland
  • 2Pyrenean Institute of Ecology, CSIC, Spain
  • 3Bren School of Environmental Science and Management, University of California, USA

Abstract. This paper evaluates the response of stream flow and other components of the water balance to changes in climate and land-use in a Pyrenean watershed. It further provides a measure of uncertainty in water resources forecasts by comparing the performance of two hydrological models: Soil and Water Assessment Tool (SWAT) and Regional Hydro-Ecological Simulation System (RHESSys). Regional Climate Model outputs for the 2021–2050 time-frame, and hypothetical (but plausible) land-use scenarios considering re-vegetation and wildfire processes were used as inputs to the models. Results indicate an overall decrease in river flows when the scenarios are considered, except for the post-fire vegetation scenario, in which stream flows are simulated to increase. However the magnitude of these projections varies between the two models used, as SWAT tends to produce larger hydrological changes under climate change scenarios, and RHESSys shows more sensitivity to changes in land-cover. The final prediction will therefore depend largely on the combination of the land-use and climate scenarios, and on the model utilized.

E. Morán-Tejeda et al.

 
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

E. Morán-Tejeda et al.

E. Morán-Tejeda et al.

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