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Tracking the changes of iron solubility and air pollutants traces as African dust transits the Atlantic in the Saharan dust outbreaks
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dc.contributor.authorRodríguez González, Sergioes_ES
dc.contributor.authorProspero, Joseph M.es_ES
dc.contributor.authorLópez-Darias, Jessicaes_ES
dc.contributor.authorGarcía Álvarez, María Isabeles_ES
dc.contributor.authorZuidema, Paquitaes_ES
dc.contributor.authorNava, Silviaes_ES
dc.contributor.authorLucarelli, Francoes_ES
dc.contributor.authorGaston, Cassandra J.es_ES
dc.contributor.authorGalindo, Luises_ES
dc.contributor.authorSosa, Elisaes_ES
dc.date.accessioned2020-11-30T09:42:14Z-
dc.date.available2020-11-30T09:42:14Z-
dc.date.issued2021-
dc.identifier.citationAtmospheric Environment. 2021, 246, 118092es_ES
dc.identifier.issn1352-2310-
dc.identifier.urihttp://hdl.handle.net/20.500.11765/12593-
dc.description.abstractWe studied the solubility, in real sea water, of iron present in the African dust outbreaks that traverse the Atlantic. Based on measurements of soluble iron (sFe) and aerosol chemistry, we found iron solubilities within the range of 0.4–1.8% in Tenerife, 0.4–3.1% in Barbados and 1.6–12% in Miami. We apportioned the concentrations of sFe between the three sources and processes that we identified: (1) dust, (2) heavy fuel oil combustion emissions, associated with an excess of vanadium and nickel, and (3) atmospheric processing, which is influenced by acidic pollutants. We tracked the propagation of the dust-front of the African dust outbreaks across the Atlantic, which are associated with dust peak events at the impacting sites. During the westward transport across the Atlantic, the contribution to sFe from dust decreased (63%, 42% and 11% in Tenerife, Barbados and Miami, respectively), whereas the contribution due to atmospheric processing increased (26%, 44% and 80% in Tenerife, Barbados and Miami, respectively). In these Saharan-dust outbreaks, the concentrations of sFe due to heavy fuel oil combustion were significantly lower (mostly < 5 ng/m3) than those in the polluted marine atmosphere (10–200 ng/m3). The overall results are consistent with the idea that the mixing of dust with acid pollutants increases the solubility of iron during the African-dust outbreaks that traverse the Atlantic.es_ES
dc.description.sponsorshipThe project AEROATLAN (CGL 2015-66299-P), is funded by the Ministry of Economy and Competitiveness of Spain and the European Regional Development Fund. M.I.G. was awarded with a grant provided by the Canarian Agency for Research, Innovation and Information Society, co-funded by the European Social Funds.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsLicencia CC: Reconocimiento CC BYes_ES
dc.subjectSoluble irones_ES
dc.subjectIron solubilityes_ES
dc.subjectAcid processinges_ES
dc.subjectDust aginges_ES
dc.subjectAnthropogenic soluble irones_ES
dc.titleTracking the changes of iron solubility and air pollutants traces as African dust transits the Atlantic in the Saharan dust outbreakses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://dx.doi.org/10.1016/j.atmosenv.2020.118092es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
Colecciones: Artículos científicos 2019-2022


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