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Retrievals of formaldehyde from ground-based FTIR and MAX-DOAS observations at the Jungfraujoch station and comparisons with GEOS-Chem and IMAGES model simulations

dc.contributor.authorFranco, B.
dc.contributor.authorHendrick, F.
dc.contributor.authorVan Roozendael, M.
dc.contributor.authorMuller, J.-F.
dc.contributor.authorStavrakou, T.
dc.contributor.authorMarais, E.A.
dc.contributor.authorBovy, B.
dc.contributor.authorBader, W.
dc.contributor.authorFayt, C.
dc.contributor.authorHermans, C.
dc.contributor.authorLejeune, B.
dc.contributor.authorPinardi, G.
dc.contributor.authorServais, C.
dc.contributor.authorMahieu, E.
dc.date2015
dc.date.accessioned2016-03-24T12:08:13Z
dc.date.available2016-03-24T12:08:13Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/2770
dc.descriptionAs an ubiquitous product of the oxidation of many volatile organic compounds (VOCs), formaldehyde (HCHO) plays a key role as a short-lived and reactive intermediate in the atmospheric photo-oxidation pathways leading to the formation of tropospheric ozone and secondary organic aerosols. In this study, HCHO profiles have been successfully retrieved from ground-based Fourier transform infrared (FTIR) solar spectra and UV-visible Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) scans recorded during the July 2010–December 2012 time period at the Jungfraujoch station (Swiss Alps, 46.5° N, 8.0° E, 3580 m a.s.l.). Analysis of the retrieved products has revealed different vertical sensitivity between both remote sensing techniques. Furthermore, HCHO amounts simulated by two state-of-the-art chemical transport models (CTMs), GEOS-Chem and IMAGES v2, have been compared to FTIR total columns and MAX-DOAS 3.6–8 km partial columns, accounting for the respective vertical resolution of each ground-based instrument. Using the CTM outputs as the intermediate, FTIR and MAX-DOAS retrievals have shown consistent seasonal modulations of HCHO throughout the investigated period, characterized by summertime maximum and wintertime minimum. Such comparisons have also highlighted that FTIR and MAX-DOAS provide complementary products for the HCHO retrieval above the Jungfraujoch station. Finally, tests have revealed that the updated IR parameters from the HITRAN 2012 database have a cumulative effect and significantly decrease the retrieved HCHO columns with respect to the use of the HITRAN 2008 compilation.
dc.languageeng
dc.titleRetrievals of formaldehyde from ground-based FTIR and MAX-DOAS observations at the Jungfraujoch station and comparisons with GEOS-Chem and IMAGES model simulations
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeaerosol formation
dc.subject.freeatmospheric chemistry
dc.subject.freeatmospheric transport
dc.subject.freedatabase
dc.subject.freeEOS
dc.subject.freeformaldehyde
dc.subject.freeFTIR spectroscopy
dc.subject.freeground-based measurement
dc.subject.freenumerical model
dc.subject.freephotooxidation
dc.subject.freeremote sensing
dc.subject.freetroposphere
dc.subject.freeAlps
dc.subject.freeBern [Switzerland]
dc.subject.freeJungfraujoch
dc.subject.freeSwitzerland
dc.source.titleAtmospheric Measurement Techniques
dc.source.volume8
dc.source.issue4
dc.source.page1733-1756
Orfeo.peerreviewedYes
dc.identifier.doi10.5194/amt-8-1733-2015
dc.identifier.scopus2-s2.0-84928492418


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