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    "Lateral boundary conditions in regional climate models: a detailed study of the relaxation procedure"

    Authors
    Marbaix, P.
    Gallée, H.
    Brasseur, O.
    Van Ypersele, J.-P.
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    Discipline
    Earth and related Environmental sciences
    Subject
    gusts
    parameterization
    regional Climate model
    downscaling
    turbulence
    PBL
    Audience
    General Public
    Scientific
    Date
    2003
    Publisher
    IRM
    KMI
    RMI
    Metadata
    Show full item record
    Description
    In gridpoint regional climate models (RCMs), the lateral boundary conditions are usually provided by a procedure called relaxation. The technique was originally studied in the context of numerical weather forecasting. This paper complements the preceding theoretical studies in order to assess the practical choices of model relaxation coefficients. Several profiles of coefficients used in RCMs are then evaluated. The complexity of actual model numerics makes any definite choice of the coefficients out of reach of simple theoretical considerations, but these provide practical guidelines. The latter are confirmed by pragmatic considerations such as minimizing discontinuities and keeping relaxation rates in the range of the represented physical processes. The last part of the paper presents a sensitivity study with the Modèle Atmosphérique Régional (MAR).
    Citation
    Marbaix, P.; Gallée, H.; Brasseur, O.; Van Ypersele, J.-P. (2003). "Lateral boundary conditions in regional climate models: a detailed study of the relaxation procedure". , Issue Monthly Weather Review, 131, pp. 461-479, IRM,
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/8907
    Type
    Article
    Peer-Review
    Not pertinent
    Language
    eng
    Links
    NewsHelpdeskBELSPO OA Policy

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