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Line narrowing effect on the retrieval of HF and HCl vertical profiles from ground-based FTIR measurements

dc.contributor.authorBarret, B.
dc.contributor.authorHurtmans, D.
dc.contributor.authorCarleer, M.R.
dc.contributor.authorDe Mazière, M.
dc.contributor.authorMahieu, E.
dc.contributor.authorCoheur, P.-F.
dc.date2005
dc.date.accessioned2016-12-07T10:36:06Z
dc.date.available2016-12-07T10:36:06Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4640
dc.descriptionCollision-induced line narrowing, which has been discovered in the 1950s and investigated thoroughly in the laboratory since then, has yet never been taken into account in the spectroscopic remote sensing of the atmosphere. This work investigates the effect of collision-induced line narrowing onto the retrieval of HCl and HF vertical profiles from ground-based solar absorption FTIR measurements made at the NDSC station of the Jungfraujoch (46.5°N, 8°E and 3580 m above see level). The retrievals are performed with the Atmosphit software, recently developed at the Université Libre de Bruxelles. It is presented in this paper for the first time and is validated against the widely used SFIT2 software. The impact of the line narrowing onto the retrieval of HCl and HF vertical profiles is examined relying on careful information content and error budget analyses. We report that the effect is relatively weak for HCl but significant for HF. Confirmation of the need to take the line narrowing into account for the retrieval of vertical profiles from ground-based FTIR spectra is given by comparison with data from the HALOE space borne instrument, rather insensitive to this spectroscopic effect.
dc.languageeng
dc.titleLine narrowing effect on the retrieval of HF and HCl vertical profiles from ground-based FTIR measurements
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeComputer software
dc.subject.freeEarth atmosphere
dc.subject.freeFourier transform infrared spectroscopy
dc.subject.freeHydrogen inorganic compounds
dc.subject.freeLight absorption
dc.subject.freeRemote sensing
dc.subject.freeSolar radiation
dc.subject.freeCollision-induced line narrowing
dc.subject.freeSFIT2 software
dc.subject.freeSpectroscopic effect
dc.subject.freeSpectroscopic remote-sensing
dc.subject.freeHydrochloric acid
dc.subject.freeatmospheric chemistry
dc.subject.freespectroscopy
dc.source.titleJournal of Quantitative Spectroscopy and Radiative Transfer
dc.source.volume95
dc.source.issue4
dc.source.page499-519
Orfeo.peerreviewedYes
dc.identifier.doi10.1016/j.jqsrt.2004.12.005
dc.identifier.scopus2-s2.0-18844432324


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