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dc.contributor.authorClair, Jason M. St.
dc.contributor.authorSwanson, Andrew K.
dc.contributor.authorBailey, Steven A.
dc.contributor.authorHanisco, Thomas F.
dc.date.accessioned2019-10-10T15:44:51Z
dc.date.available2019-10-10T15:44:51Z
dc.date.issued2019-08-30
dc.description.abstractNASA Compact Airborne Formaldehyde Experiment (CAFE) is a nonresonant laser-induced fluorescence instrument for airborne in situ measurement of formaldehyde (HCHO). The instrument is described here with highlighted improvements from the predecessor instrument, COmpact Formaldehyde FluorescencE Experiment (COFFEE). CAFE uses a 480 mW, 80 kHz laser at 355 nm to excite HCHO and detects the resulting fluorescence in the 420–550 nm range. The fluorescence is acquired at 5 ns resolution for 500 ns and the unique time profile of the HCHO fluorescence provides measurement selectivity. CAFE achieves a 1σ precision of 160 pptv (1 s) and 90 pptv (10 s) for [HCHO] = 0 pptv. The accuracy of CAFE, using its curve-fitting data processing, is estimated as ±20 % of [HCHO] + 100 pptv. CAFE has successfully flown on multiple aircraft platforms and is particularly well-suited to high-altitude research aircraft or small air quality research aircraft where high sensitivity is required but operator interaction and instrument payload is limited.en_US
dc.description.sponsorshipThis research has been supported by NASA (Upper Atmospheric Research Program grant), NASA (Tropospheric Composition Program grant), and NASA (grant no. NNH12ZDA001N-AITT).en_US
dc.description.urihttps://www.atmos-meas-tech-discuss.net/amt-2019-153/en_US
dc.format.extent10 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2zlkt-pxrr
dc.identifier.citationJason M. St. Clair, et.al, CAFE: a new, improved non-resonant laser-induced fluorescence instrument for airborne in situ measurement of formaldehyde, Atmos. Meas. Tech., 12, 4581–4590, 2019 https://doi.org/10.5194/amt-12-4581-2019en_US
dc.identifier.urihttps://doi.org/10.5194/amt-12-4581-2019
dc.identifier.urihttp://hdl.handle.net/11603/15024
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.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.rightsAttribution 4.0 International (CC BY 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.subjectCOmpact Formaldehyde FluorescencE Experiment (COFFEE)en_US
dc.subjectCompact Airborne Formaldehyde Experiment (CAFE)en_US
dc.subjectlaser-induced fluorescence instrumenten_US
dc.titleCAFE: a new, improved non-resonant laser-induced fluorescence instrument for airborne in situ measurement of formaldehydeen_US
dc.typeTexten_US


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This 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.
Except where otherwise noted, this item's license is described as This 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.