• Login
     
    View Item 
    •   ORFEO Home
    • Royal Belgian Institute for Space Aeronomy
    • BIRA-IASB publications
    • View Item
    •   ORFEO Home
    • Royal Belgian Institute for Space Aeronomy
    • BIRA-IASB publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Impact of SO2 Flux Estimation in the Modeling of the Plume of Mount Etna Christmas 2018 Eruption and Comparison against Multiple Satellite Sensors

    Thumbnail
    View/Open
    Lamotte(2023a).pdf (11.09Mb)
    Authors
    Lamotte, C.
    Marécal, V.
    Guth, J.
    Salerno, G.
    Corradini, S.
    Theys, N.
    Warnach, S.
    Guerrieri, L.
    Brenot, H.
    Wagner, T.
    Bacles, M.
    Show allShow less
    Discipline
    Earth and related Environmental sciences
    Subject
    SO2 flux estimation
    Mount Etna eruption
    modeling
    volcanic plume dispersion
    multi-sensor comparison
    Audience
    Scientific
    Date
    2023
    Metadata
    Show full item record
    Description
    In this study, we focus on the eruption of Mount Etna on Christmas 2018, which emitted great amounts of SO2 from 24th to 30th December into the free troposphere. Simulations based on two different estimations of SO2 emission fluxes are conducted with the chemistry-transport model MOCAGE in order to study the impact of these estimations on the volcanic plume modeling. The two flux emissions used are retrieved (1) from the ground-based network FLAME, located on the flank of the volcano, and (2) from the spaceborne instrument SEVIRI onboard the geostationary satellite MSG. Multiple spaceborne observations, in the infrared and ultraviolet bands, are used to evaluate the model results. Overall, the model results match well with the plume location over the period of the eruption showing the good transport of the volcanic plume by the model, which is linked to the use of a realistic estimation of the altitude of injection of the emissions. However, there are some discrepancies in the plume concentrations of SO2 between the two simulations, which are due to the differences between the two emission flux estimations used that are large on some of the days. These differences are linked to uncertainties in the retrieval methods and observations used to derive SO2 volcanic fluxes. We find that the uncertainties in the satellite-retrieved column of SO2 used for the evaluation of the simulations, linked to the instrument sensitivity and/or the retrieval algorithm, are sometimes nearly as large as the differences between the two simulations. This shows a limitation of the use of satellite retrievals of SO2 concentrations to quantitatively validate modeled volcanic plumes. In the paper, we also discuss approaches to improve the simulation of SO2 concentrations in volcanic plumes through model improvements and also via more advanced methods to more effectively use satellite-derived products.
    Citation
    Lamotte, C.; Marécal, V.; Guth, J.; Salerno, G.; Corradini, S.; Theys, N.; Warnach, S.; Guerrieri, L.; Brenot, H.; Wagner, T.; Bacles, M. (2023). Impact of SO2 Flux Estimation in the Modeling of the Plume of Mount Etna Christmas 2018 Eruption and Comparison against Multiple Satellite Sensors. , Remote Sensing, Vol. 15, Issue 3, A758, DOI: 10.3390/rs15030758.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/10745
    doi: http://dx.doi.org/10.3390/rs15030758
    scopus:
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
    NewsHelpdeskBELSPO OA Policy

    Browse

    All of ORFEOCommunities & CollectionsBy Issue DateAuthorsTitlesDisciplinesThis CollectionBy Issue DateAuthorsTitlesDisciplines
     

    DSpace software copyright © 2002-2016  DuraSpace
    Send Feedback | Cookie Information
    Theme by 
    Atmire NV