Long optical cavities for open-path monitoring of atmospheric trace gases and aerosol extinction

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dc.contributor.author Varma, Ravi M.
dc.contributor.author Venables, Dean S.
dc.contributor.author Ruth, Albert A.
dc.contributor.author Heitmann, Uwe M.
dc.contributor.author Schlosser, E.
dc.contributor.author Dixneuf, Sophie
dc.date.accessioned 2012-11-08T10:29:14Z
dc.date.available 2012-11-08T10:29:14Z
dc.date.copyright 2009
dc.date.issued 2009-02
dc.identifier.citation Varma, R. M.,Venables, D. S.,Ruth, A. A.,Heitmann, U.,Schlosser, E.,Dixneuf, S.; (2009) 'Long optical cavities for open-path monitoring of atmospheric trace gases and aerosol extinction'. Applied Optics, 48 (4):B159-B171. http://dx.doi.org/10.1364/AO.48.00B159 en
dc.identifier.volume 48 en
dc.identifier.issued 4 en
dc.identifier.startpage B159 en
dc.identifier.endpage B171 en
dc.identifier.issn 0003-6935
dc.identifier.uri http://hdl.handle.net/10468/740
dc.identifier.doi 10.1364/AO.48.00B159
dc.description.abstract An incoherent broadband cavity-enhanced absorption spectroscopy setup employing a 20 m long optical cavity is described for sensitive in situ measurements of light extinction between 630 and 690 nm. The setup was installed at the SAPHIR atmospheric simulation chamber during an intercomparison of instruments for nitrate (NO3) radical detection. The long cavity was stable for the entire duration of the two week campaign. A detection limit of similar to 2 pptv for NO3 in an acquisition time of 5 s was established during that time. In addition to monitoring NO3, nitrogen dioxide (NO2) concentrations were simultaneously retrieved and compared against concurrent measurements by a chemiluminescence detector. Some results from the campaign are presented to demonstrate the performance of the instrument in an atmosphere containing water vapor and inorganic aerosol. The spectral analysis of NO3 and NO2, the concentration dependence of the water absorption cross sections, and the retrieval of aerosol extinction are discussed. The first deployment of the setup in the field is also briefly described. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Optical Society of America en
dc.relation.uri http://dx.doi.org/10.1364/AO.48.00B159
dc.rights © 2009 Optical Society of America. This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/AO.48.00B159. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. en
dc.subject Atmospheric and oceanic optics en
dc.subject Air pollution monitoring en
dc.subject Spectroscopy en
dc.title Long optical cavities for open-path monitoring of atmospheric trace gases and aerosol extinction en
dc.type Article (peer-reviewed) en
dc.internal.authorurl http://publish.ucc.ie/researchprofiles/D004/dvenables en
dc.internal.authorcontactother Dean Venables, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: d.venables@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2012-10-23T15:11:34Z
dc.description.version Published Version en
dc.internal.rssid 18609283
dc.description.status Peer reviewed en
dc.identifier.journaltitle Applied Optics en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress d.venables@ucc.ie en

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