Total Peroxy Nitrates (ΣPNs) in the atmosphere: the Thermal Dissociation-Laser Induced Fluorescence (TD-LIF) technique and comparisons to speciated PAN measurements

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dc.contributor.authorWooldridge, P. J.
dc.contributor.authorPerring, A. E.
dc.contributor.authorBertram, T. H.
dc.contributor.authorFlocke, F. M.
dc.contributor.authorRoberts, J.M.
dc.contributor.authorSingh, H. B.
dc.contributor.authorHuey, L. G.
dc.contributor.authorThornton, J.A.
dc.contributor.authorWolfe, G. M.
dc.contributor.authorMurphy, J. G.
dc.contributor.authorFry, J. L.
dc.contributor.authorRollins, A. W.
dc.contributor.authorLaFranchi, B. W.
dc.contributor.authorCohen, R.C.
dc.date.accessioned2020-09-16T15:27:01Z
dc.date.available2020-09-16T15:27:01Z
dc.date.issued2010-05-12
dc.description.abstractPeroxyacetyl nitrate (PAN) and its chemical analogues are increasingly being quantified in the ambient atmosphere by thermal dissociation (TD) followed by detection of either the peroxyacyl radical or the NO₂ product. Here we present details of the technique developed at University of California, Berkeley which detects the sum of all peroxynitrates (ΣPNs) via laser-induced fluorescence (LIF) of the NO2 product. We review the various deployments and compare the Berkeley ΣPNs measurements with the sums of PAN and its homologue species detected individually by other instruments. The observed TD-LIF ΣPNs usually agree to within 10% with the summed individual species, thus arguing against the presence of significant concentrations of unmeasured PAN-type compounds in the atmosphere, as suggested by some photochemical mechanisms. Examples of poorer agreement are attributed to a sampling inlet design that is shown to be inappropriate for high NOₓ conditions. Interferences to the TD-LIF measurements are described along with strategies to minimize their effects.en_US
dc.description.sponsorshipThe Berkeley authors gratefully acknowledge funding from NSF grants ATM-1038669, ATM-0639847, ATM0511829, and Office of Polar Programs Grant No. 9907928; NASA grants NNG05GH196, NAG5-13668, NNX08AE56G, and Instrument Incubator Program contract NAS1-99053; and NOAA grant RA133R-04-AE-0023. The NO₃-N₂O₅-Intercomparison campaign (2007) was supported by grant no. RII3-CT-2004-505968 of the European Community within the 6th Framework Program, Section Support for research Infrastructures – Integrated Infrastructure Initiative: EUROCHAMP 15 and Priority 1.1.6.3. Global Change and Ecosystems: ACCENT. Thanks also to S. Brown, H. Fuchs, and W. Dube for N₂O₅ for providing the NOAA cavity ring-down N₂O₅ dataen_US
dc.description.urihttps://amt.copernicus.org/articles/3/593/2010/en_US
dc.format.extent15 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m29cbs-49kx
dc.identifier.citationP. J. Wooldridge et al., Total Peroxy Nitrates (ΣPNs) in the atmosphere: the Thermal Dissociation-Laser Induced Fluorescence (TD-LIF) technique and comparisons to speciated PAN measurements, Atmos. Meas. Tech., 3, 593–607, 2010 https://doi.org/10.5194/amt-3-593-2010en_US
dc.identifier.urihttps://doi.org/10.5194/amt-3-593-2010
dc.identifier.urihttp://hdl.handle.net/11603/19659
dc.language.isoen_USen_US
dc.publisherCopernicusen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Physics Department
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleTotal Peroxy Nitrates (ΣPNs) in the atmosphere: the Thermal Dissociation-Laser Induced Fluorescence (TD-LIF) technique and comparisons to speciated PAN measurementsen_US
dc.typeTexten_US

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