Daily numerical simulations
of the terrestrial biosphere

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This page displays some comparisons between the global simulation of the net ecosystem productivity (NEP) by the ORCHIDEE model and pointwise measurements made by the eddy-covariance technique. The fluxes have been averaged over 24 hours. Note that ORCHIDEE uses here ECMWF global atmospheric data rather than the locally-measured weather parameters.

Data for the following sites are available:
  • Hyytiälä, Finland, longitude 24°694', latitude 61°50' (pine forest ecosystem), University of Helsinki.
  • Kenttarova, Finland, longitude 24°14', latitude 67°59' (spruce forest), Finnish Meteorological Institute.
  • Sodankylä, Finland, longitude 26°38', latitude 67°21' (coniferous forest), Finnish Meteorological Institute.
  • Sorø, Denmark, longitude 11°38', latitude 55°29' (Fagus sylvatica forest), Technical University of Denmark.

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    Hyytiälä, Finland (longitude 24°694', latitude 61°50')

    HYY
    The measurements have been kindly provided by Timo Vesala and Pasi Aalto, University of Helsinki, Finland.



    Kenttarova, Finland (longitude 24°14', latitude 67°59')

    FMI2
    The measurements have been kindly provided by Tuomas Laurila, Finnish Meteorological Institute, Helsinki, Finland. FMI



    Sodankylä, Finland (longitude 26°38', latitude 67°21')

    FMI1
    The measurements have been kindly provided by Tuomas Laurila, Finnish Meteorological Institute, Helsinki, Finland. FMI



    Sorø, Denmark (longitude 11°38', latitude 55°29')

    FMI2
    The measurements have been kindly provided by Merete Bruun Christiansen †, Michael S. Courtney †, Ebba Dellwik †, Andreas Ibrom ‡, Kim Pilegaard ‡ and Lise Lotte Sørensen †.
    † Wind Energy Department
    ‡ Biosystems Department
    Risø National Laboratory, Technical University of Denmark



    Development of near real-time system: Nicolas Viovy and Frédéric Chevallier
    Contact: Frederic.Chevallliercea.fr
     © CEA