Por favor, use este identificador para citar o enlazar este ítem: http://www.alice.cnptia.embrapa.br/alice/handle/doc/896953
Registro completo de metadatos
Campo DCValorLengua/Idioma
dc.contributor.authorKEMENES, A.pt_BR
dc.contributor.authorFORSBERG, B. R.pt_BR
dc.contributor.authorMELACK, J. M.pt_BR
dc.date.accessioned2011-07-28T11:11:11Zpt_BR
dc.date.available2011-07-28T11:11:11Zpt_BR
dc.date.created2011-07-28pt_BR
dc.date.issued2011pt_BR
dc.identifier.citationJournal of Geophysical Research, Washington, v. 116, n. G03004, p. 1-11, 2011.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/896953pt_BR
dc.descriptionHydroelectric reservoirs can release significant quantities of CO2, 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectEmissão de gás carbônicopt_BR
dc.subjectCO2pt_BR
dc.titleCO2 emissions from a tropical hydroelectric reservoir (Balbina, Brazil).pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2011-07-28T11:11:11Zpt_BR
riaa.ainfo.id896953pt_BR
riaa.ainfo.lastupdate2011-07-28pt_BR
dc.contributor.institutionALEXANDRE KEMENES, CPAMN; BRUCE R. FORSBERG, Instituto Nacional de Pesquisas da Amazonia, Manaus, Brazil; JOHN M. MELACK, Bren School of Environmental Science and Management, University of California, Santa Barbara, California, USA.pt_BR
Aparece en las colecciones:Artigo em periódico indexado (CPAMN)

Ficheros en este ítem:
Fichero Descripción TamañoFormato 
CO2emissions.pdf1.02 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro sencillo del ítem

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace