Downstream emissions of CH sub(4) and CO sub(2) from hydroelectric reservoirs (Tucurui, Samuel, and Curua-Una) in the Amazon basin

Carbon dioxide (CO sub(2)) and methane (CH sub(4)) generated in reservoirs are released downstream of dams, and few studies have considered these downstream emissions. Fluxes downstream of 3 Amazon hydroelectric reservoirs (Tucurui, Samuel, and Curua-Una) are reported here. Degassing through turbine...

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Bibliographic Details
Published in:Inland waters (Print) 2016-01, Vol.6 (3), p.295-302
Main Authors: Kemenes, A, sberg, B R, Melack, J M
Format: Article
Language:English
Subjects:
Freshwater
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Summary:Carbon dioxide (CO sub(2)) and methane (CH sub(4)) generated in reservoirs are released downstream of dams, and few studies have considered these downstream emissions. Fluxes downstream of 3 Amazon hydroelectric reservoirs (Tucurui, Samuel, and Curua-Una) are reported here. Degassing through turbines was calculated as the difference between intake and outflow concentrations. Additional releases along the Tocantins, Jamari, and Curua rivers were measured at downstream sites over a distance of 30 km. About 50% of the CH sub(4) and 30% of the CO sub(2) emitted downstream of the dam were liberated at the turbine outflow. The total downstream emissions are sufficiently large to require consideration in assessments of greenhouse gas emissions from hydroelectric reservoirs.
ISSN:2044-2041
2044-205X
DOI:10.5268/IW-6.3.980