First Amazon Methane budget based in atmospheric long term data provided by aircraft vertical profiles measurements

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dc.contributor.authorBASSO, LUANA S.pt_BR
dc.contributor.authorGATTI, LUCIANA V.pt_BR
dc.contributor.authorMARANI, LUCIANOpt_BR
dc.contributor.authorCASSOL, HENRIQUE L.G.pt_BR
dc.contributor.authorTEJADA, GRACIELApt_BR
dc.contributor.authorCORREA, SERGIO M.pt_BR
dc.contributor.authorMILLER, JOHN B.pt_BR
dc.contributor.authorGLOOR, MANUELpt_BR
dc.contributor.authorDOMINGUES, LUCAS G.pt_BR
dc.contributor.authorARAI, EGIDIOpt_BR
dc.contributor.authorSANCHEZ, ALBERpt_BR
dc.contributor.authorARAGÃO, LUIZ E.O.C.pt_BR
dc.contributor.authorCORREIA, CAIO S. de C.pt_BR
dc.contributor.authorNEVES, RAIANE A.L.pt_BR
dc.contributor.authorCRISPIM, STEPHANE P.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoAGU FALL MEETINGpt_BR
dc.date.accessioned2021-03-02T14:59:25Z
dc.date.available2021-03-02T14:59:25Z
dc.date.eventoDecember 1-17, 2020pt_BR
dc.description.abstractThe overall Methane (CH4) budget remains highly uncertain even with the efforts to improve the estimates and contributions of its many sources (natural and anthropogenic) and few sinks. Wetland emissions are considered the primary natural CH4 source but with large uncertainty in estimations. Tropical regions like the Amazon, host some of the largest wetlands areas on the globe. However, these regions are still poorly observed with large-scale integrating observations. Here we present the first long term (2010-2018) atmospheric sampling of the lower troposphere over the Amazon using regular vertical profile (300m to 4.4km height) observations of CH4 and carbon monoxide (CO) at four sites. The sampling was nearly biweekly using small aircrafts, to provide solid seasonal and annual CH4 budgets with large spatial resolution. Was calculated a CO/CH4 ratio to estimate CH4 emissions from biomass burning. An increase in emissions mainly during the dry season at all sites from biomass burning was observed. The results show a regional variation in biogenic CH4 emissions (total minus biomass burning emissions). There are comparably high emissions from the Amazon northeast region (SAN) exhibiting strong seasonality, with particularly high CH4 fluxes one month before (February/March) the wet season peak. The second period of high emissions occurs during the beginning of the dry season (August). In the other three sites (ALF, RBA and TAB_TEF) located further downwind along the main air-stream, it were observed lower emissions, which represents approximately 20-33 % of what was observed in the northeast region and with a clear annual seasonality. Besides, we discuss how these data vary throughout the years and how it can be correlated to climate variables (temperature, precipitation and equivalent water thickness) and with human-driven influence (biomass burning), which both could be impacting this variability and annual seasonality.pt_BR
dc.identifier.citationBASSO, LUANA S.; GATTI, LUCIANA V.; MARANI, LUCIANO; CASSOL, HENRIQUE L.G.; TEJADA, GRACIELA; CORREA, SERGIO M.; MILLER, JOHN B.; GLOOR, MANUEL; DOMINGUES, LUCAS G.; ARAI, EGIDIO; SANCHEZ, ALBER; ARAGÃO, LUIZ E.O.C.; CORREIA, CAIO S. de C.; NEVES, RAIANE A.L.; CRISPIM, STEPHANE P. First Amazon Methane budget based in atmospheric long term data provided by aircraft vertical profiles measurements. In: AGU FALL MEETING, December 1-17, 2020, Online. <b>Abstract...</b> Washington, DC, USA: American Geophysical Union, 2020. Disponível em: http://repositorio.ipen.br/handle/123456789/31847.
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/31847
dc.localWashington, DC, USApt_BR
dc.local.eventoOnlinept_BR
dc.publisherAmerican Geophysical Unionpt_BR
dc.rightsopenAccesspt_BR
dc.subjectmethane
dc.subjectcarbon monoxide
dc.subjectbiomass
dc.subjectwetlands
dc.subjectamazon river
dc.subjectaircraft
dc.subjecttroposphere
dc.subjectenvironmental impacts
dc.titleFirst Amazon Methane budget based in atmospheric long term data provided by aircraft vertical profiles measurementspt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorCAIO SILVESTRE DE CARVALHO CORREIA
ipen.codigoautor9389
ipen.contributor.ipenauthorCAIO SILVESTRE DE CARVALHO CORREIA
ipen.date.recebimento21-03
ipen.event.datapadronizada2020pt_BR
ipen.identifier.ipendoc27618pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublicationacc5922b-1651-48af-a115-39477da9c65f
relation.isAuthorOfPublication.latestForDiscoveryacc5922b-1651-48af-a115-39477da9c65f
sigepi.autor.atividadeCORREIA, CAIO S. de C.:9389:1010:Npt_BR
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