Vertically resolved chemical characteristics and sources of submicron aerosols measured on a Tall Tower in a suburban area near Denver, Colorado in winter

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dc.authorid0000-0002-6908-5829en_US
dc.authorid0000-0001-9936-1145en_US
dc.authorid0000-0002-4033-4668en_US
dc.authorid0000-0001-5179-8444en_US
dc.contributor.authorÖztürk, Fatma
dc.contributor.authorBahreini, R.
dc.contributor.authorWagner, Nicholas L.
dc.contributor.authorDube, W. P.
dc.contributor.authorYoung, Cora J.
dc.contributor.authorBrown, S. S.
dc.contributor.authorBrock, Charles A.
dc.date.accessioned2021-06-23T19:34:04Z
dc.date.available2021-06-23T19:34:04Z
dc.date.issued2013
dc.departmentBAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractThe Nitrogen, Aerosol Composition, and Halogens on a Tall Tower study was conductedat the Boulder Atmospheric Observatory in Colorado during February–March 2011. Acompact time-of-flight aerosol mass spectrometer was installed in a moving carriage on thetower, obtaining vertical profiles of submicron nonrefractory aerosol mass concentrations(PMnr1)from0–265 m above ground level. The average PMnr1was 4.6 ± 5.7 μg/m3, withaverage contributions of nitrate, organics, sulfate, ammonium, and chloride of 35%, 26%,20%, 17%, and 1%, respectively. Positive Matrix Factorization analysis of the organic aerosol(OA) mass spectra indicated that average contributions of oxygenated organic aerosol(OOA)-I, OOA-II, and hydrocarbon-like organic aerosol (surrogates for aged and freshsecondary OA and primary OA, respectively) to OA mass were 52%, 32%, and 16%,respectively. There was considerable variability in the vertical profiles of aerosol mass loadingand composition, especially at the lowest heights. Below 40 m, the highest PMnr1concentrationswere composed of mostly nitrate (30–46%) and were associated with winds from the northeastwhere there are large agricultural facilities. When winds were southerly, PMnr1massdistributions near the surface had small, fresh OA, indicating the influence of nearby Denverurban emissions at the site. The largest contribution to OA mass at these heights was OOA-II(~43%). Between 40 and 120 m, trajectory cluster analysis indicated that during high-altitudelong-range transport events, daytime aerosol composition was dominated by sulfate, whereasduring low-altitude transport events, the contributions of sulfate, nitrate, and OA werecomparable. OOA-I contributed the most (53–68%) to OA mass at these tower heights.en_US
dc.identifier.doi10.1002/2013JD019923
dc.identifier.endpage13605en_US
dc.identifier.issn2169-897X
dc.identifier.issn2169-8996
dc.identifier.issue24en_US
dc.identifier.scopus2-s2.0-84892508783en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage13591en_US
dc.identifier.urihttps://doi.org/10.1002/2013JD019923
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7365
dc.identifier.volume118en_US
dc.identifier.wosWOS:000329971100009en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorÖztürk, Fatma
dc.language.isoenen_US
dc.publisherAmer Geophysical Unionen_US
dc.relation.ispartofJournal Of Geophysical Research-Atmospheresen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleVertically resolved chemical characteristics and sources of submicron aerosols measured on a Tall Tower in a suburban area near Denver, Colorado in winteren_US
dc.typeArticleen_US

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