N2O5 uptake coefficients and nocturnal NO2 removal rates determined from ambient wintertime measurements

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dc.authorid0000-0002-6908-5829en_US
dc.authorid0000-0002-4033-4668en_US
dc.contributor.authorWagner, N. L.
dc.contributor.authorRiedel, T. P.
dc.contributor.authorYoung, Cora J.
dc.contributor.authorBahreini, R.
dc.contributor.authorBrock, Charles A.
dc.contributor.authorÖztürk, Fatma
dc.date.accessioned2021-06-23T19:34:20Z
dc.date.available2021-06-23T19:34:20Z
dc.date.issued2013
dc.departmentBAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractHeterogeneous N2O5 uptake onto aerosol is the primary nocturnal path for removal of NOx (= NO+NO2) from the atmosphere and can also result in halogen activation through production of ClNO2. The N2O5 uptake coefficient has been the subject of numerous laboratory studies; however, only a few studies have determined the uptake coefficient from ambient measurements, and none has been focused on winter conditions, when the portion of NOx removed by N2O5 uptake is the largest. In this work, N2O5 uptake coefficients are determined from ambient wintertime measurements of N2O5 and related species at the Boulder Atmospheric Observatory in Weld County, CO, a location that is highly impacted by urban pollution from Denver, as well as emissions from agricultural activities and oil and gas extraction. A box model is used to analyze the nocturnal nitrate radical chemistry and predict the N2O5 concentration. The uptake coefficient in the model is iterated until the predicted N2O5 concentration matches the measured concentration. The results suggest that during winter, the most important influence that might suppress N2O5 uptake is aerosol nitrate but that this effect does not suppress uptake coefficients enough to limit the rate of NOx loss through N2O5 hydrolysis. N2O5 hydrolysis was found to dominate the nocturnal chemistry during this study consuming similar to 80% of nocturnal gas phase nitrate radical production. Typically, less than 15% of the total nitrate radical production remained in the form of nocturnal species at sunrise when they are photolyzed and reform NO2.en_US
dc.identifier.doi10.1002/jgrd.50653
dc.identifier.endpage9350en_US
dc.identifier.issn2169-897X
dc.identifier.issn2169-8996
dc.identifier.issue16en_US
dc.identifier.scopus2-s2.0-84884151628en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage9331en_US
dc.identifier.urihttps://doi.org/10.1002/jgrd.50653
dc.identifier.urihttps://hdl.handle.net/20.500.12491/7474
dc.identifier.volume118en_US
dc.identifier.wosWOS:000324933900040en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorÖztürk, F.
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/openAccessen_US
dc.subjectN2O5en_US
dc.subjectNitrate Radicalen_US
dc.subjectNOx Removalen_US
dc.subjectNocturnal Chemistryen_US
dc.subjectUptake Coefficienten_US
dc.subjectNACHTTen_US
dc.titleN2O5 uptake coefficients and nocturnal NO2 removal rates determined from ambient wintertime measurementsen_US
dc.typeArticleen_US

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