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    A forward model of limb infrared emission spectra in a two-dimensional atmosphere

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    Authors
    De Clercq, C.
    Lambert, J.-C.
    Discipline
    Physical sciences
    Subject
    Heat transfer
    Information retrieval
    Infrared radiation
    Interferometers
    Mathematical models
    Radiant heating
    Weather satellites
    Concentric layers
    Limb infrared emission spectra
    Michelson Interferometer for Passive Atmospheric Sounding (MIPAS)
    Satellite measurements
    Atmospheric spectra
    Audience
    Scientific
    Date
    2006
    Metadata
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    Description
    Most frequently, one-dimensional profiles of atmospheric constituents are retrieved from satellite radiance measurements assuming a spherical atmosphere made of homogeneous, concentric layers. Averaging kernels associated with the retrieval enable one-dimensional characterisation of the retrieved information as a function of altitude or pressure. Nevertheless, two-dimensional characterisation of the information reatrievable frorm satellite measurements is highly desirable for an increasing number of scientific and operational applications. We describe here a simple radiative transfer model capable of calculating limb radiance emission spectra in a two-dimensional atmosphere. Radiative transfer basics resemble those adopted in the operational processing of Envisat Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) data. However, to keep it as fast and flexible as possible, the model assumes, several simplifications having no or weak influence on geometrical aspects of the ray tracing. The model is applied to MIPAS particular (limb scanning strategy, global fit retrieval approach, specific spectral microwindows) in order to investigate the two-dimensional distribution of the sounded information.
    Citation
    De Clercq, C.; Lambert, J.-C. (2006). A forward model of limb infrared emission spectra in a two-dimensional atmosphere. , Proceedings of the First Atmospheric Science Conference, Issue 628,
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/4527
    scopus: 2-s2.0-33749181279
    Type
    Conference
    Peer-Review
    No
    Language
    eng
    Links
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