Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorKemenes, Alexandre-
dc.contributor.authorForsberg, Bruce Rider-
dc.contributor.authorMelack, John M.-
dc.description.abstractHydroelectric reservoirs can release significant quantities of CO 2, but very few results are available from the tropics. The objective of the present study was to estimate the emission of CO2 from the Balbina hydroelectric reservoir in the central Brazilian Amazon. Diffusive and ebullitive emissions were estimated at regular intervals, both above and below the dam, using a combination of static chambers and submerged funnels. Gas releases immediately below the dam were calculated as the difference between gas flux at the entrance and the outflow of the hydroelectric turbines. An inundation model derived from a bathymetric map and daily stage readings was used for spatial and temporal interpolation of reservoir emissions. Annual emissions of CO2, upstream and downstream of Balbina dam for 2005, were estimated as 2450 and 81 Gg C, respectively, for a total annual flux of 2531 Gg C. Upstream emissions were predominantly diffusive with only 0.02 Gg C yr-1 resulting from ebullition. On average, 51% of the downstream emission was released by degassing at the turbine outflow, and the remainder was lost by diffusion from the downstream river. The total annual greenhouse gas emission from Balbina dam, including the CO2 equivalent of previously estimated CH4 emissions, was 3 Tg C yr-1, equivalent to approximately 50% of the CO2 emissions derived from the burning of fossil fuels in the Brazilian metropolis of São Paulo. Copyright 2011 by the American Geophysical Union.en
dc.relation.ispartofVolume 116, Número 3pt_BR
dc.subjectAtmospheric Pollutionen
dc.subjectCarbon Dioxideen
dc.subjectEstimation Methoden
dc.subjectFossil Fuelen
dc.subjectGreenhouse Gasen
dc.subjectHydroelectric Poweren
dc.subjectIndustrial Emissionen
dc.subjectMathematical Analysisen
dc.subjectSpatio-temporal Analysisen
dc.subjectTropical Meteorologyen
dc.subjectBalbina Reservoiren
dc.titleCO2 emissions from a tropical hydroelectric reservoir (Balbina, Brazil)en
dc.publisher.journalJournal of Geophysical Research: Biogeosciencespt_BR
Appears in Collections:Artigos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.