Modelling the radiative effects of smoke aerosols on carbon fluxes in Amazon

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dc.contributor.authorMOREIRA, DEMERVAL S.
dc.contributor.authorLONGO, KARLA M.
dc.contributor.authorFREITAS, SAULO R.
dc.contributor.authorYAMASOE, MARCIA A.
dc.contributor.authorMERCADO, LINA M.
dc.contributor.authorROSARIO, NILTON E.
dc.contributor.authorGLOOR, EMANUEL
dc.contributor.authorVIANA, ROSANE S.M.
dc.contributor.authorMILLER, JOHN B.
dc.contributor.authorGATTI, LUCIANA V.
dc.contributor.authorWIEDEMANN, KENIA T.
dc.contributor.authorDOMINGUES, LUCAS K.G.
dc.contributor.authorCORREIA, CAIO C.S.
dc.coverageInternacionalpt_BR
dc.date.accessioned2017-09-26T12:01:59Z
dc.date.available2017-09-26T12:01:59Z
dc.date.issued2017pt_BR
dc.description.abstractEvery year, a dense smoke haze of regional dimensions covers a large portion of South America originated from fire activities in the Amazon Basin and Central parts of Brazil during the dry/biomass-burning season between August and October. Over a large portion of South America, the average aerosol optical depth at 550 nm exceeds 1.0 during the fire season while the background value during the rainy season is below 0.2. Smoke aerosol particles increase scattering and absorption of the incident solar radiation. The regional-scale aerosol layer reduces the amount of solar energy reaching the surface, cools the near surface air, and increases the diffuse radiation fraction over a large disturbed area of the Amazon rainforest. These factors affect the energy and CO2 fluxes at the surface. In this work, we applied a fully integrated atmospheric model to assess the impact of smoke aerosols in CO2 fluxes in the Amazon region during 2010. We address the effects of the attenuation of the solar global radiation and the enhancement of the diffuse solar radiation flux inside the canopy. Our results indicated that the smoke aerosols led to an increase of about 22 % of the gross primary productivity of Amazonia, 9 % of plant respiration and a decline in soil respiration from of 3 %. Consequently, Amazonia net ecosystem exchange during September 2010 dropped from +101 to −104 TgC when the aerosol effects were considered, mainly due to the aerosol diffuse radiation effect. For the forest biome, our results pointed to a dominance of the diffuse radiation effect on CO2 fluxes, reaching a balance of 50 % – 50 % between the diffuse and direct aerosol effects for high aerosol loads. For C3 grass type and cerrado, as expected, the contribution of the diffuse radiation effect is much lower, tending to zero with the increase of aerosol load. That is, the Amazon during the dry season, in the presence of high smoke aerosol loads, change from being a source to be a sink of CO2 to the atmosphere.pt_BR
dc.format.extent14785-14810pt_BR
dc.identifier.citationMOREIRA, DEMERVAL S.; LONGO, KARLA M.; FREITAS, SAULO R.; YAMASOE, MARCIA A.; MERCADO, LINA M.; ROSARIO, NILTON E.; GLOOR, EMANUEL; VIANA, ROSANE S.M.; MILLER, JOHN B.; GATTI, LUCIANA V.; WIEDEMANN, KENIA T.; DOMINGUES, LUCAS K.G.; CORREIA, CAIO C.S. Modelling the radiative effects of smoke aerosols on carbon fluxes in Amazon. <b>Atmospheric Chemistry and Physics</b>, p. 14785-14810, 2017. DOI: <a href="https://dx.doi.org/10.5194/acp-17-14785-2017">10.5194/acp-17-14785-2017</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/27788.
dc.identifier.doi10.5194/acp-17-14785-2017pt_BR
dc.identifier.issn1680-7316pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4908-8974
dc.identifier.percentilfi95.93en
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/27788
dc.relation.ispartofAtmospheric Chemistry and Physicspt_BR
dc.rightsopenAccesspt_BR
dc.subjectcarbon
dc.subjectaerosols
dc.subjectsmokes
dc.subjectenvironmental effects
dc.subjectenvironment
dc.subjectaerosol wastes
dc.subjectbiomass
dc.subjectfires
dc.subjectforests
dc.subjectecosystems
dc.subjectbiosphere
dc.subjectamazon river
dc.subjectradiation effects
dc.titleModelling the radiative effects of smoke aerosols on carbon fluxes in Amazonpt_BR
dc.typeArtigo de periódicopt_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.recebimento17-09pt_BR
ipen.identifier.fi5.509pt_BR
ipen.identifier.ipendoc23086pt_BR
ipen.range.fi4.500 - 5.999
ipen.range.percentilfi75.00 - 100.00
ipen.type.genreArtigo
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.atividadeGATTI, LUCIANA V.:670:-1:Npt_BR
sigepi.autor.atividadeDOMINGUES, LUCAS K.G.:6548:-1:Npt_BR
sigepi.autor.atividadeCORREIA, CAIO C.S.:9389:-1:Npt_BR
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