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    Tropospheric boundary layer investigations by differential ground-based solar FTIR spectrometry

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    Barret(1999a).pdf (359.1Kb)
    Authors
    Barret, B.
    Mahieu, E.
    Carleer, M.
    De Maziere, M.
    Colin, R.
    Zander, R.
    Show allShow less
    Discipline
    Earth and related Environmental sciences
    Subject
    Absorption spectroscopy
    Atmospheric composition
    Boundary layers
    Carbon monoxide
    Ethane
    Fourier transform infrared spectroscopy
    Methane
    Nitrogen oxides
    Remote sensing
    Solar radiation
    Spectrometry
    Troposphere
    Solar absorption spectrometry
    Atmospheric chemistry
    Audience
    Scientific
    Date
    1999
    Metadata
    Show full item record
    Description
    In order to better understand the chemistry and the transport mechanisms in the lower troposphere, a new original technique has been developed and tested. The experiment consists in recording high resolution infrared solar absorption spectra containing signatures of important atmospheric constituents, simultaneously from the International Scientific Station of the Jungfraujoch in Switzerland (ISSJ, 3580 m a.s.l., 46.5°N, 8°E, Bruker 120HR Fourier transform spectrometer (FTS)) and from a nearby valley (Grindelwald, 1070 m a.s.l., Bruker 120M FTS). Analysis of individual spectra allows to determine vertical column abundances; differences between measurements at ISSJ and at Grindelwald enable us to retrieve the constituents' concentrations between 1070 m and 3580 m, assuming a constant volume mixing ratio in this layer. A first measurement campaign has been organized during the months of May and June 1998. After an initial period of instrument intercomparison at ISSJ, the mobile instrument was moved down in the valley and installed for one month in Grindelwald. When operated side by side at the Jungfraujoch, measurements made by both instruments showed a very good agreement (maximum bias of 1.5%). Analysis of spectra recorded synchronously at the Jungfraujoch and at Grindelwald gave average boundary layer concentrations for a selected set of tropospheric molecules, i.e. methane, nitrous oxide, carbon monoxide and ethane. Comparison with other results and with carbon monoxide in-situ measurements made at ISSJ showed a good agreement.
    Citation
    Barret, B.; Mahieu, E.; Carleer, M.; De Maziere, M.; Colin, R.; Zander, R. (1999). Tropospheric boundary layer investigations by differential ground-based solar FTIR spectrometry. , Proceedings of SPIE 3821 - Environmental Sensing and Applications, Vol. 3821, 116-123, DOI: 10.1117/12.364172.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/5377
    doi: http://dx.doi.org/10.1117/12.364172
    scopus: 2-s2.0-0033339863
    Type
    Conference
    Peer-Review
    No
    Language
    eng
    Links
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