Understanding the seasonality and interannual variability of Amazon CH4 budget and climate feedbacks based on atmospheric data from 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.authorDOMINGUES, LUCAS G.pt_BR
dc.contributor.authorCORREIA, CAIO S. de C.pt_BR
dc.contributor.authorIPIA, ALBERpt_BR
dc.contributor.authorARAI, EGIDIOpt_BR
dc.contributor.authorARAGAO, LUIZ E.O.C.pt_BR
dc.contributor.authorANDERSON, LIANA O.pt_BR
dc.contributor.authorCRISPIM, STEPHANE P.pt_BR
dc.contributor.authorNEVES, RAIANE A.L.pt_BR
dc.contributor.authorGLOOR, MANUELpt_BR
dc.contributor.authorMILLER, JOHN B.pt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoAGU CHARPMAN CONFERENCEpt_BR
dc.date.accessioned2021-08-30T18:01:24Z
dc.date.available2021-08-30T18:01:24Z
dc.date.eventoAugust 26-29, 2019pt_BR
dc.description.abstractCurrently tropical land regions, like Amazon, are still poorly observed with large-scale integrating in-situ observations although they host some of the largest wetlands/seasonally flooded areas on the globe. The role of these regions in the global CH4 balance and the climate feedbacks have remained uncertain. To help this situation we have started a lower-troposphere greenhouse gas-monitoring program over tropical South America consisting of regular vertical profile greenhouse gas and carbon monoxide (CO) observations at four sites along the main airstream since 2010. Vertical profiles are sampled using light aircraft, high-precision greenhouse gas and carbon monoxide analysis of flask air, fortnightly between 2010 to 2017. Over the full period the Amazon (total area of around 7.2 million km2) was a source of CH4, of approximately 46 ± 6 Tg/year, which represent 8% of the global CH4 flux to the atmosphere. CH4 emissions from different parts of the basin vary markedly. There are comparably high emissions from the eastern part of the basin exhibiting strong variability, with particularly high CH4 fluxes in the early part of the wet season (January to March). A second period of high emissions occurs during the dry season. The cause of the high emissions is unclear. In contrast to the eastern Amazon site a clear seasonality was observed at the other three sites located further downwind along the main sir-stream, with the largest emissions occurring at the beginning of the wet season (January to March). In addition, these data show an interannual variability in emissions magnitude, so we discuss how these data can be correlate to temperature, precipitation, terrestrial water storage anomalies (from GRACE) and Fire counts (human-driven changes) that could be influencing this variability. Using a CO/CH4 emission ratio calculated in this study we find a biomass burning contribution varying between 10 and 23% of the total flux at each site. Also, we discuss what the data tell us about possible ongoing feedbacks to possible changes in temperature, precipitation and biomass burning and indicating what variables can be contributing to CH4 emissions from Amazon.pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipIDFAPESP: 16/02018-2; 08/58120-3; 11/51841-0; 18/14006-4pt_BR
dc.description.sponsorshipIDCNPq: 480713/2013-8pt_BR
dc.identifier.citationBASSO, LUANA S.; GATTI, LUCIANA V.; MARANI, LUCIANO; CASSOL, HENRIQUE L.G.; TEJADA, GRACIELA; DOMINGUES, LUCAS G.; CORREIA, CAIO S. de C.; IPIA, ALBER; ARAI, EGIDIO; ARAGAO, LUIZ E.O.C.; ANDERSON, LIANA O.; CRISPIM, STEPHANE P.; NEVES, RAIANE A.L.; GLOOR, MANUEL; MILLER, JOHN B. Understanding the seasonality and interannual variability of Amazon CH4 budget and climate feedbacks based on atmospheric data from vertical profiles measurements. In: AGU CHARPMAN CONFERENCE, August 26-29, 2019, San Diego, CA, USA. <b>Abstract...</b> Washington, DC, USA: American Geophysical Union, 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/32189.
dc.identifier.orcid0000-0003-4908-8974pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4908-8974
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/32189
dc.localWashington, DC, USApt_BR
dc.local.eventoSan Diego, CA, USApt_BR
dc.publisherAmerican Geophysical Unionpt_BR
dc.rightsopenAccesspt_BR
dc.titleUnderstanding the seasonality and interannual variability of Amazon CH4 budget and climate feedbacks based on atmospheric data from vertical profiles measurementspt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorCAIO SILVESTRE DE CARVALHO CORREIA
ipen.autorLUCAS GATTI DOMINGUES
ipen.autorLUCIANA VANNI GATTI
ipen.codigoautor9389
ipen.codigoautor6548
ipen.codigoautor670
ipen.contributor.ipenauthorCAIO SILVESTRE DE CARVALHO CORREIA
ipen.contributor.ipenauthorLUCAS GATTI DOMINGUES
ipen.contributor.ipenauthorLUCIANA VANNI GATTI
ipen.date.recebimento21-08
ipen.event.datapadronizada2019pt_BR
ipen.identifier.ipendoc27958pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
relation.isAuthorOfPublicationacc5922b-1651-48af-a115-39477da9c65f
relation.isAuthorOfPublication3eb6eddc-494d-4e4c-bce8-4c6a4bafa5a6
relation.isAuthorOfPublication12ece531-6992-4dbf-b85f-3026471e1a3b
relation.isAuthorOfPublication.latestForDiscovery12ece531-6992-4dbf-b85f-3026471e1a3b
sigepi.autor.atividadeCORREIA, CAIO S. de C.:9389:1010:Npt_BR
sigepi.autor.atividadeDOMINGUES, LUCAS G.:6548:1010:Npt_BR
sigepi.autor.atividadeGATTI, LUCIANA V.:670:1010:Npt_BR
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