A new non-resonant laser-induced fluorescence instrument for the airborne in situ measurement of formaldehyde

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dc.contributor.authorSt. Clair, Jason
dc.contributor.authorSwanson, Andrew K.
dc.contributor.authorBailey, Steven A.
dc.contributor.authorWolfe, Glenn
dc.contributor.authorMarrero, Josette E.
dc.contributor.authorIraci, Laura T.
dc.contributor.authorHagopian, John G.
dc.contributor.authorHanisco, Thomas F.
dc.date.accessioned2020-06-16T17:31:22Z
dc.date.available2020-06-16T17:31:22Z
dc.date.issued2017-12-12
dc.description.abstractA new in situ instrument for gas-phase formaldehyde (HCHO), COmpact Formaldehyde FluorescencE Experiment (COFFEE), is presented. COFFEE utilizes non-resonant laser-induced fluorescence (NR-LIF) to measure HCHO, with 300 mW of 40 kHz 355 nm laser output exciting multiple HCHO absorption features. The resulting HCHO fluorescence is collected at 5 ns resolution, and the fluorescence time profile is fit to yield the ambient HCHO mixing ratio. Typical 1σ precision at  ∼  0 pptv HCHO is 150 pptv for 1 s data. The compact instrument was designed to operate with minimal in-flight operator interaction and infrequent maintenance (1–2 times per year). COFFEE fits in the wing pod of the Alpha Jet stationed at the NASA Ames Research Center and has successfully collected HCHO data on 27 flights through 2017 March. The frequent flights, combined with a potentially long-term data set, makes the Alpha Jet a promising platform for validation of satellite-based column HCHO.en_US
dc.description.sponsorshipFunding was provided by the Goddard Internal Research and Development (IRAD) program and NASA (NNH16ZDA001N-UACO). J. E. Marrero gratefully acknowledges funding from the NASA Postdoctoral Programen_US
dc.description.urihttps://www.atmos-meas-tech.net/10/4833/2017/en_US
dc.format.extent12 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2gski-6lul
dc.identifier.citationSt. Clair, J. M., Swanson, A. K., Bailey, S. A., Wolfe, G. M., Marrero, J. E., Iraci, L. T., Hagopian, J. G., and Hanisco, T. F.: A new non-resonant laser-induced fluorescence instrument for the airborne in situ measurement of formaldehyde, Atmos. Meas. Tech., 10, 4833–4844, https://doi.org/10.5194/amt-10-4833-2017, 2017.en_US
dc.identifier.urihttps://doi.org/10.5194/amt-10-4833-2017
dc.identifier.urihttp://hdl.handle.net/11603/18904
dc.language.isoen_USen_US
dc.publisherCopernicus Publicationsen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
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.titleA new non-resonant laser-induced fluorescence instrument for the airborne in situ measurement of formaldehydeen_US
dc.typeTexten_US

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