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dc.contributor.authorCeburnis, Darius
dc.contributor.authorMasalaite, Agne
dc.contributor.authorOvadnevaite, Jurgita
dc.contributor.authorGarbaras, Andrius
dc.contributor.authorRemeikis, Vidmantas
dc.contributor.authorMaenhaut, Willy
dc.contributor.authorClaeys, Magda
dc.contributor.authorSciare, Jean
dc.contributor.authorBaisnée, Dominique
dc.contributor.authorO’Dowd, Colin D.
dc.identifier.citationCeburnis, Darius; Masalaite, Agne; Ovadnevaite, Jurgita; Garbaras, Andrius; Remeikis, Vidmantas; Maenhaut, Willy; Claeys, Magda; Sciare, Jean; Baisnée, Dominique; O’Dowd, Colin D. (2016). Stable isotopes measurements reveal dual carbon pools contributing to organic matter enrichment in marine aerosol. Scientific Reports 6 ,
dc.description.abstractStable carbon isotope ratios in marine aerosol collected over the Southern Indian Ocean revealed delta C-13 values ranging from -20.0% to -28.2%. The isotope ratios exhibited a strong correlation with the fractional organic matter (OM) enrichment in sea spray aerosol. The base-level isotope ratio of -20.0% is characteristic of an aged Dissolved Organic Matter (DOM) pool contributing a relatively homogeneous background level of DOM to oceanic waters. The range of isotope ratios, extending down to -28.2%, is characteristic of more variable, stronger, and fresher Particulate Organic Matter (POM) pool driven by trophic level interactions. We present a conceptual dual-pool POM-DOM model which comprises a 'young' and variable POM pool which dominates enrichment in sea-spray and an 'aged' but invariant DOM pool which is, ultimately, an aged end-product of processed 'fresh' POM. This model is harmonious with the preferential enrichment of fresh colloidal and nano-gel lipid-like particulate matter in sea spray particles and the observed depleted delta C-13 ratio resulting from isotope equilibrium fractionation coupled with enhanced plankton photosynthesis in cold water (-2 degrees C to + 8 degrees C). These results re-assert the hypothesis that OM enrichment in sea-spray is directly linked to primary production and, consequently, can have implications for climate-aerosol-cloud feedback systems.
dc.publisherSpringer Nature
dc.relation.ispartofScientific Reports
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland
dc.subjectsea spray aerosol
dc.titleStable isotopes measurements reveal dual carbon pools contributing to organic matter enrichment in marine aerosol

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