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  Impacts of changing climate on the hydrology and hydropower production of the Tagus River basin

Lobanova, A., Koch, H., Liersch, S., Hattermann, F. F., Krysanova, V. (2016): Impacts of changing climate on the hydrology and hydropower production of the Tagus River basin. - Hydrological Processes, 30, 26, 5039-5052.
https://doi.org/10.1002/hyp.10966

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Lobanova, Anastasia1, Author              
Koch, Hagen1, Author              
Liersch, Stefan1, Author              
Hattermann, Fred Fokko1, Author              
Krysanova, Valentina1, Author              
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1Potsdam Institute for Climate Impact Research, ou_persistent13              

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 Abstract: The Tagus River basin is an ultimately important water source for hydropower production, urban and agricultural water supply in Spain and Portugal. Growing electricity and water supply demands, over‐regulation of the river and construction of new dams, as well as large inter‐basin and intra‐basin water transfers aggravated by strong natural variability of climate in the catchment, have already imposed significant pressures on the river. The substantial reduction of discharge is observed already now, and projected climatic change is expected to alter the water budget of the catchment further.In this study, we address the effects of projected climate change on the water resources availability in the Tagus River basin and influence of potential changes on hydropower generation of the three important reservoirs in the basin. The catchment‐scale, process‐based eco‐hydrological model soil and water integrated model was set up, calibrated and validated for the entire Tagus River basin, taking into account 15 large reservoirs in the catchment. The future climate projections were selected from those generated within the Inter‐Sectoral Impact Model Intercomparison Project. They include five bias‐corrected climatic datasets for the region, obtained from global circulation model runs under two emissions scenario – moderate and extreme ones – and covered the whole century. The results show a strong agreement among model runs in projecting substantial decrease of discharge of the Tagus River discharge and, consequently, a strong decrease in hydropower production under both future climate scenarios.

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 Dates: 2016
 Publication Status: Finally published
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 Rev. Type: -
 Identifiers: DOI: 10.1002/hyp.10966
PIKDOMAIN: Climate Impacts & Vulnerabilities - Research Domain II
eDoc: 7270
Working Group: Hydroclimatic Risks
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Title: Hydrological Processes
Source Genre: Journal, SCI, Scopus, p3
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Pages: - Volume / Issue: 30 (26) Sequence Number: - Start / End Page: 5039 - 5052 Identifier: CoNE: https://publications.pik-potsdam.de/cone/journals/resource/journals205