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

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    Barret(2005).pdf (329.8Kb)
    Authors
    Barret, B.
    Hurtmans, D.
    Carleer, M.R.
    De Mazière, M.
    Mahieu, E.
    Coheur, P.-F.
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    Discipline
    Earth and related Environmental sciences
    Subject
    Computer software
    Earth atmosphere
    Fourier transform infrared spectroscopy
    Hydrogen inorganic compounds
    Light absorption
    Remote sensing
    Solar radiation
    Collision-induced line narrowing
    SFIT2 software
    Spectroscopic effect
    Spectroscopic remote-sensing
    Hydrochloric acid
    atmospheric chemistry
    spectroscopy
    Audience
    Scientific
    Date
    2005
    Metadata
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    Description
    Collision-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.
    Citation
    Barret, B.; Hurtmans, D.; Carleer, M.R.; De Mazière, M.; Mahieu, E.; Coheur, P.-F. (2005). Line narrowing effect on the retrieval of HF and HCl vertical profiles from ground-based FTIR measurements. , Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 95, Issue 4, 499-519, DOI: 10.1016/j.jqsrt.2004.12.005.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/4640
    doi: http://dx.doi.org/10.1016/j.jqsrt.2004.12.005
    scopus: 2-s2.0-18844432324
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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