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    Expected Performances of the NOMAD/ExoMars instrument

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    Robert(2016).pdf (2.462Mb)
    Authors
    Robert, S.
    Vandaele, A.C.
    Thomas, I.
    Willame, Y.
    Daerden, F.
    Delanoye, S.
    Depiesse, C.
    Drummond, R.
    Neefs, E.
    Neary, L.
    Ristic, B.
    Mason, J.
    Lopez-Moreno, J.-J.
    Rodriguez-Gomez, J.
    Patel, M.R.
    Bellucci, G.
    the NOMAD Team
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    Discipline
    Physical sciences
    Audience
    Scientific
    Date
    2016
    Metadata
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    Description
    NOMAD (Nadir and Occultation for MArs Discovery) is one of the four instruments on board the ExoMars Trace Gas Orbiter, scheduled for launch in March 2016. It consists of a suite of three high-resolution spectrometers – SO (Solar Occultation), LNO (Limb, Nadir and Occultation) and UVIS (Ultraviolet and Visible Spectrometer). Based upon the characteristics of the channels and the values of Signal-to-Noise Ratio obtained from radiometric models discussed in (Vandaele et al., 2015a and Vandaele et al., 2015b; Thomas et al., 2016), the expected performances of the instrument in terms of sensitivity to detection have been investigated. The analysis led to the determination of detection limits for 18 molecules, namely CO, H2O, HDO, C2H2, C2H4, C2H6, H2CO, CH4, SO2, H2S, HCl, HCN, HO2, NH3, N2O, NO2, OCS, O3. NOMAD should have the ability to measure methane concentrations <25 parts per trillion (ppt) in solar occultation mode, and 11 parts per billion in nadir mode. Occultation detections as low as 10 ppt could be made if spectra are averaged (Drummond et al., 2011). Results have been obtained for all three channels in nadir and in solar occultation.
    Citation
    Robert, S.; Vandaele, A.C.; Thomas, I.; Willame, Y.; Daerden, F.; Delanoye, S.; Depiesse, C.; Drummond, R.; Neefs, E.; Neary, L.; Ristic, B.; Mason, J.; Lopez-Moreno, J.-J.; Rodriguez-Gomez, J.; Patel, M.R.; Bellucci, G.; the NOMAD Team (2016). Expected Performances of the NOMAD/ExoMars instrument. , Planetary and Space Science, Vol. 124, 94-104, DOI: 10.1016/j.pss.2016.03.003.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/4040
    doi: http://dx.doi.org/10.1016/j.pss.2016.03.003
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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