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

dc.contributor.authorBarret, B.
dc.contributor.authorMahieu, E.
dc.contributor.authorCarleer, M.
dc.contributor.authorDe Maziere, M.
dc.contributor.authorColin, R.
dc.contributor.authorZander, R.
dc.date1999
dc.date.accessioned2017-05-09T11:58:43Z
dc.date.available2017-05-09T11:58:43Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/5377
dc.descriptionIn 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.
dc.languageeng
dc.titleTropospheric boundary layer investigations by differential ground-based solar FTIR spectrometry
dc.typeConference
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freeAbsorption spectroscopy
dc.subject.freeAtmospheric composition
dc.subject.freeBoundary layers
dc.subject.freeCarbon monoxide
dc.subject.freeEthane
dc.subject.freeFourier transform infrared spectroscopy
dc.subject.freeMethane
dc.subject.freeNitrogen oxides
dc.subject.freeRemote sensing
dc.subject.freeSolar radiation
dc.subject.freeSpectrometry
dc.subject.freeTroposphere
dc.subject.freeSolar absorption spectrometry
dc.subject.freeAtmospheric chemistry
dc.source.titleProceedings of SPIE 3821 - Environmental Sensing and Applications
dc.source.volume3821
dc.source.page116-123
Orfeo.peerreviewedNo
dc.identifier.doi10.1117/12.364172
dc.identifier.scopus2-s2.0-0033339863


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