Amazon methane budget derived from multi-year airborne observations highlights regional variations in emissions

dc.creatorBASSO, LUANA S.
dc.creatorMARANI, LUCIANO
dc.creatorGATTI, LUCIANA V.
dc.creatorMILLER, JOHN B.
dc.creatorGLOOR, MANUEL
dc.creatorMELACK, JOHN
dc.creatorCASSOL, HENRIQUE L.G.
dc.creatorTEJADA, GRACIELA
dc.creatorDOMINGUES, LUCAS G.
dc.creatorARAI, EGIDIO
dc.creatorSANCHEZ, ALBER H.
dc.creatorCORREA, SERGIO M.
dc.creatorANDERSON, LIANA
dc.creatorARAGAO, LUIZ E.O.C.
dc.creatorCORREIA, CAIO S.C.
dc.creatorCRISPIM, STEPHANE P.
dc.creatorNEVES, RAIANE A.L.
dc.date2021
dc.date2022-03-11T18:44:24Z
dc.date2022-03-11T18:44:24Z
dc.date.accessioned2023-09-28T14:21:19Z
dc.date.available2023-09-28T14:21:19Z
dc.identifier2662-4435
dc.identifierhttp://repositorio.ipen.br/handle/123456789/32781
dc.identifier1
dc.identifier2
dc.identifier10.1038/s43247-021-00314-4
dc.identifier0000-0003-4908-8974
dc.identifier89.54
dc.identifier84.00
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9003000
dc.descriptionAtmospheric methane concentrations were nearly constant between 1999 and 2006, but have been rising since by an average of ~8 ppb per year. Increases in wetland emissions, the largest natural global methane source, may be partly responsible for this rise. The scarcity of in situ atmospheric methane observations in tropical regions may be one source of large disparities between top-down and bottom-up estimates. Here we present 590 lower-troposphere vertical profiles of methane concentration from four sites across Amazonia between 2010 and 2018. We find that Amazonia emits 46.2????????10.3 Tg of methane per year (~8% of global emissions) with no temporal trend. Based on carbon monoxide, 17% of the sources are from biomass burning with the remainder (83%) attributable mainly to wetlands. Northwest-central Amazon emissions are nearly aseasonal, consistent with weak precipitation seasonality, while southern emissions are strongly seasonal linked to soil water seasonality. We also find a distinct east-west contrast with large fluxes in the northeast, the cause of which is currently unclear.
dc.descriptionFunda????o de Amparo ?? Pesquisa do Estado de S??o Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Cient??fico e Tecnol??gico (CNPq)
dc.descriptionFAPESP: 16/02018-2; 11/51841-0; 08/58120-3; 11/17914-0; 18/14006-4; 18/14423-4; 18/18493-7; 19/21789-8; 19/23654-2; 20/02656-4
dc.descriptionCNPq: 134878/2009-4
dc.format1-13
dc.relationCommunications Earth & Environment
dc.rightsopenAccess
dc.subjectmethane
dc.subjectemission
dc.subjectecological concentration
dc.subjectclimates
dc.subjectamazon river
dc.titleAmazon methane budget derived from multi-year airborne observations highlights regional variations in emissions
dc.typeArtigo de peri??dico
dc.coverageI


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