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dc.contributor.authorNÖLSCHER, A. C.pt_BR
dc.contributor.authorYAÑEZ-SERRANO, A. M.pt_BR
dc.contributor.authorWOLFF, S.pt_BR
dc.contributor.authorARAUJO, A. C. dept_BR
dc.contributor.authorLAVRIC, J. V.pt_BR
dc.contributor.authorKESSELMEIER, J.pt_BR
dc.contributor.authorWILLIAMS, J.pt_BR
dc.date.accessioned2016-05-31T11:11:11Zpt_BR
dc.date.available2016-05-31T11:11:11Zpt_BR
dc.date.created2016-05-31pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationNature Communications, v. 7, art. n. 10383, 22 Jan. 2016.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1045925pt_BR
dc.descriptionThe hydroxyl radical (OH) removes most atmospheric pollutants from air. The loss frequency of OH radicals due to the combined effect of all gas-phase OH reactive species is a measureable quantity termed total OH reactivity. Here we present total OH reactivity observations in pristine Amazon rainforest air, as a function of season, time-of-day and height (0?80 m). Total OH reactivity is low during wet (10 s1) and high during dry season (62 s1). Comparison to individually measured trace gases reveals strong variation in unaccounted for OH reactivity, from 5 to 15% missing in wet-season afternoons to mostly unknown (average 79%) during dry season. During dry-season afternoons isoprene, considered the dominant reagent with OH in rainforests, only accounts for B20% of the total OH reactivity. Vertical profiles of OH reactivity are shaped by biogenic emissions, photochemistry and turbulent mixing. The rainforest floor was identified as a significant but poorly characterized source of OH reactivity.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectSazonalidadept_BR
dc.titleUnexpected seasonality in quantity and composition of Amazon rainforest air reactivity.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2017-09-28T11:11:11Zpt_BR
dc.subject.thesagroFlorestapt_BR
dc.subject.nalthesaurusAmazoniapt_BR
riaa.ainfo.id1045925pt_BR
riaa.ainfo.lastupdate2017-09-28 -03:00:00pt_BR
dc.identifier.doi10.1038/ncomms10383pt_BR
dc.contributor.institutionA. C. Nölscher, Max Planck Institute for Chemistry; A. M. Yañez-Serrano, Max Planck Institute for Chemistry / INPA; S. Wolff, Max Planck Institute for Chemistry / INPA; ALESSANDRO CARIOCA DE ARAUJO, CPATU; J. V. Lavric, Max Planck Institute for Biogeochemistry; J. Kesselmeier, Max Planck Institute for Chemistry; J. Williams, Max Planck Institute for Chemistry.pt_BR
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