Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1106635
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dc.contributor.authorPFANNERSTILL, E. Y.
dc.contributor.authorNÖLSCHER, A. C.
dc.contributor.authorYÁÑEZ-SERRANO, A. M.
dc.contributor.authorBOURTSOUKIDIS, E.
dc.contributor.authorKEBEL, S.
dc.contributor.authorJANSSEN, R. H. H.
dc.contributor.authorTSOKANKUNKU, A.
dc.contributor.authorWOLFF, S.
dc.contributor.authorSÖRGEL, M.
dc.contributor.authorSÁ, M. O.
dc.contributor.authorARAUJO, A. C. de
dc.contributor.authorWALTER, D.
dc.contributor.authorLAVRIC, J.
dc.contributor.authorDIAS-JUNIOR, C. Q.
dc.contributor.authorKESSELMEIER, J.
dc.contributor.authorWILLIAMS, J.
dc.date.accessioned2019-03-02T00:42:38Z-
dc.date.available2019-03-02T00:42:38Z-
dc.date.created2019-02-28
dc.date.issued2018
dc.identifier.citationFrontiers in Forests and Global Change, v. 1, Article 12, Dec. 2018.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1106635-
dc.descriptionThe 2015/16 El Niño event caused unprecedented drought and warming in the Amazon basin. How tropical forests react to such extreme events in terms of volatile organic compound (VOC) emissions is of interest as the frequency of these events is predicted to increase through climate change. The diverse VOCs emitted can be significant for plants' carbon budgets, influence ozone and particle production, and through their reactivity impact OH concentrations. Total OH reactivity is a directly measureable quantity that gives the reaction frequency of OH radicals with all reactive species in the atmosphere in s?1. Here we present a comparison of the OH reactivity diel cycle from November 2015, i.e., extreme drought and elevated temperatures associated with strong El Niño conditions, with November 2012, a ?normal? El Niño Southern Oscillation (ENSO)-neutral period. Interestingly, the diel maximum of OH reactivity during the El Niño event occurred at sunset instead of, under normal conditions, early afternoon. The absolute total diel OH reactivity, however, did not change significantly. Daytime OH reactivity averages were 24.3 ± 14.5 s?1 in 2012 and 24.6 ± 11.9 s?1 in 2015, respectively. Our findings suggest that a combination of stronger turbulent transport above the canopy with stress-related monoterpene and, possibly, other biogenic volatile organic compound (BVOC) emissions were responsible for the increased reactivity at sunset.
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titleTotal OH reactivity changes over the Amazon rainforest during an El Niño event.
dc.typeArtigo de periódico
dc.date.updated2019-04-18T11:11:11Zpt_BR
dc.subject.nalthesaurusEl Nino
dc.subject.nalthesaurusAmazonia
riaa.ainfo.id1106635
riaa.ainfo.lastupdate2019-04-18 -03:00:00
dc.identifier.doi10.3389/ffgc.2018.00012
dc.contributor.institutionEva Y. Pfannerstill, Max Planck Institute for Chemistry
dc.contributor.institutionAnke C. Nölscher, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionAna M. Yáñez-Serrano, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionEfstratios Bourtsoukidis, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionStephan Keßel, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionRuud H. H. Janssen, Massachusetts Institute of Technologypt_BR
dc.contributor.institutionAnywhere Tsokankunku, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionStefan Wolff, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionMatthias Sörgel, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionMarta O. Sá, INPApt_BR
dc.contributor.institutionALESSANDRO CARIOCA DE ARAUJO, CPATUpt_BR
dc.contributor.institutionDavid Walter, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionJošt Lavric, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionCléo Q. Dias-Júnior, IFPApt_BR
dc.contributor.institutionJürgen Kesselmeier, Max Planck Institute for Chemistrypt_BR
dc.contributor.institutionJonathan Williams, Max Planck Institute for Chemistry.pt_BR
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