Greenhouse gas emissions (CO 2 , CH 4 and N 2 O) from perialpine and alpine hydropower reservoirs
TLDR
In this paper, the authors measured greenhouse gas (CO2, CH4, and N2O) emissions from eleven reservoirs located at different altitudes in Switzerland depth profiles of greenhouse gas concentrations were measured several times during spring and summer.Abstract:
. In eleven reservoirs located at different altitudes in Switzerland depth profiles of greenhouse gas (CO2, CH4, and N2O) concentrations were measured several times during spring and summer. Trace gas emissions were calculated using surface concentrations, wind speeds and transfer velocities. Additionally we assessed methane loss at the turbine and the methane input by inflowing water. All reservoirs were net emitters of CO2 with an average of 1030±780 mg m−2 d−1 and of methane with an average of 0.20±0.15 mg m−2 d−1. One reservoir (Lake Wohlen) emitted methane at a much higher rate (160±110 mg m−2 d−1), most of which (>98%) was due to ebullition. Only lowland reservoirs were sources for N2O (72±22 μg m−2 d−1), while the subalpine and alpine reservoirs seem to be in equilibrium with atmospheric concentrations. Methane loss at the turbine was as large as the diffusive flux from the surface for two subalpine reservoirs and around five times smaller for a lowland reservoir. The available data suggests greenhouse gas emissions from reservoirs in the Alps are minor contributors to the global greenhouse gas emissions.read more
Citations
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Climate impacts on European agriculture and water management in the context of adaptation and mitigation—The importance of an integrated approach
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Oxidation and emission of methane in a monomictic lake (Rotsee, Switzerland)
Carsten J. Schubert,F. Lucas,F. Lucas,E. Durisch-Kaiser,E. Durisch-Kaiser,R. Stierli,Torsten Diem,O. Scheidegger,Francisco Vazquez,Beat Müller +9 more
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CO2 emissions from German drinking water reservoirs.
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A review of how life cycle assessment has been used to assess the environmental impacts of hydropower energy
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TL;DR: In this article , the authors provide a comprehensive and critical review on this topic by conducting a systematic literature review on hydropower life cycle assessment (LCA) studies published since 2010.
References
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Book Chapter
Changes in Atmospheric Constituents and in Radiative Forcing
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Carbon dioxide in water and seawater: the solubility of a non-ideal gas
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Biogenic methane formation in marine and freshwater environments: CO2 reduction vs. acetate fermentation—Isotope evidence
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