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    The GODFIT (GOME direct fitting) algorithm: A new approach for total column retrieval

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    Authors
    Spurr, R.
    Van Roozendael, M.
    Fayt, C.
    Lambert, J.-C.
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    Discipline
    Earth and related Environmental sciences
    Subject
    Computer simulation
    Data reduction
    Ozone
    Remote sensing
    Ultraviolet spectrometers
    Weather satellites
    GOME direct fitting (GODFIT)
    Model simulation
    Radiative transfer
    Scatter
    Algorithms
    Audience
    Scientific
    Date
    2005
    Metadata
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    Description
    We present a new direct fitting algorithm for retrieval of total column amounts from remote sensing UV/visible spectrometers. The GODFIT algorithm for GOME total ozone makes a single fit for the vertical column; there is no DOAS slant-column fitting and AMF conversion. GODFIT relies on a 1-1 column-profile map for ozone; all forward model simulations are done from scratch using the LIDORT linearized radiative transfer model. The algorithm includes a new molecular Ring correction implementation. A 2300-orbit validation showed closer agreement with ground-based results (excepting some polar regions), and much reduced scatter and seasonal variation. These findings are in line with results from the new generation of DOAS algorithms.
    Citation
    Spurr, R.; Van Roozendael, M.; Fayt, C.; Lambert, J.-C. (2005). The GODFIT (GOME direct fitting) algorithm: A new approach for total column retrieval. (Lacoste, H., Ed.), Proceedings of the 2004 Envisat & ERS Symposium, Salzburg, Austria, 6-10 September 2004 (ESA SP-572), Vol. 572, 1231-1240,
    Identifiers
    isbn: 92-9092-883-2
    uri: https://orfeo.belnet.be/handle/internal/4615
    scopus: 2-s2.0-23844543059
    Type
    Conference
    Peer-Review
    No
    Language
    eng
    Links
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