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.
Discipline
Earth and related Environmental sciences
Subject
Acetone
IASI satellite
neural network retrieval
remote sensing
oxygenated VOCs
Audience
Scientific
Date
2019Metadata
Show full item recordDescription
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
Type
Article
Peer-Review
Yes
Language
eng