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    Acetone Atmospheric Distribution Retrieved From Space

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    Authors
    Franco, B.
    Clarisse, L.
    Stavrakou, T.
    Müller, J.-F.
    Pozzer, A.
    Hadji‐Lazaro, J.
    Hurtmans, D.
    Clerbaux, C.
    Coheur, P.-F.
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    Discipline
    Earth and related Environmental sciences
    Subject
    Acetone
    IASI satellite
    neural network retrieval
    remote sensing
    oxygenated VOCs
    Audience
    Scientific
    Date
    2019
    Metadata
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    Description
    As one of the most abundant oxygenated volatile organic compounds in the atmosphere, acetone (CH3C[O]CH3) influences atmospheric oxidants levels and ozone formation. Here we report the first unambiguous identification of acetone from the nadir‐viewing satellite sounder Infrared Atmospheric Sounding Interferometer (IASI). Via a neural network‐based retrieval approach that was previously applied to the retrieval of other weak absorbers, we obtain daily global acetone retrievals. A first intercomparison with independent measurements is conducted. As the retrieval method is computationally fast, it allowed the full reprocessing of the 2007–2018 IASI time series. Analysis of the retrieved global product and its seasonality suggests that emissions of acetone and precursors from the terrestrial biosphere at Northern Hemisphere middle and high latitudes are the main contributors to the atmospheric acetone abundance, more than year‐round oxidation of anthropogenic isoalkanes. Remarkably, biomass burning does not appear to be a strong global source of acetone.
    Citation
    Franco, B.; Clarisse, L.; Stavrakou, T.; Müller, J.-F.; Pozzer, A.; Hadji‐Lazaro, J.; Hurtmans, D.; Clerbaux, C.; Coheur, P.-F. (2019). Acetone Atmospheric Distribution Retrieved From Space. , Geophysical Research Letters, Vol. 46, Issue 5, 2884-2893, DOI: 10.1029/2019GL082052.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/7210
    doi: http://dx.doi.org/10.1029/2019GL082052
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
    NewsHelpdeskBELSPO OA Policy

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