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    Improvement in the GERB short wave flux estimations over snow covered surfaces

    Authors
    Bertrand, C.
    , Gonzalez, L.
    , Ipe, A.
    Clerbaux, N.
    Dewitte, S.
    Show allShow less
    Discipline
    Earth and related Environmental sciences
    Subject
    Remote sensing
    Snow cover
    Short wave flux
    Radiance-to-flux conversion
    Angular distribution model
    Audience
    General Public
    Scientific
    Date
    2008
    Publisher
    IRM
    KMI
    RMI
    Metadata
    Show full item record
    Description
    Because space-borne radiometers do not measure the Earth’s outgoing fluxes directly, angular distribution models (ADMs) are required to relate actual radiance measurement to flux at given solar angle, satellite-viewing geometries, surface, and atmospheric conditions. The conversion of one footprint broad-band radiance into the corresponding flux requires therefore one to first characterize each footprint in terms of surface type and cloud cover properties to properly select the adequate ADM. A snow (and sea-ice) retrieval technique based on spectral measurements from the Spinning Enhanced Visible and Infrared Imager (SEVIRI) on board Meteosat 8 is presented. It has been developed to improve the scene identification and thus the ADM selection in the near-real time processing of the Geostationary Earth Radiation Budget (GERB) data at the Royal Meteorological Institute of Belgium. The improvement in the GERB short wave flux estimations over snow covered scene types resulting from angular conversion using dedicated snow ADMs (e.g.; empirical snow ADMs and/or pre-computed theoretical snow ADM) instead of empirical snow-free ADMs is discussed.
    Citation
    Bertrand, C.; , Gonzalez, L.; , Ipe, A.; Clerbaux, N.; Dewitte, S. (2008). Improvement in the GERB short wave flux estimations over snow covered surfaces. , Issue Advances in Space Research, No. 41, 1894-1905, IRM,
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/8789
    Type
    Article
    Peer-Review
    Not pertinent
    Language
    eng
    Links
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