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ECOCLIMAP, A GLOBAL DATABASE OF LAND SURFACE PARAMETERS AT 1KM RESOLUTION

ECOCLIMAP, A GLOBAL DATABASE OF LAND SURFACE PARAMETERS AT 1KM RESOLUTION J.L. CHAMPEAUX , V. MASSON, F. CHAUVIN METEO-FRANCE/CNRM, 42, Av Coriolis, 31057 Toulouse Cedex, France Tph : (0)5 61 07 93 55, Fax : (0)5 61 07 96 26, email : Jean-louis.champeaux@meteo.fr

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ECOCLIMAP, A GLOBAL DATABASE OF LAND SURFACE PARAMETERS AT 1KM RESOLUTION

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  1. ECOCLIMAP, A GLOBAL DATABASE OF LAND SURFACE PARAMETERS AT 1KM RESOLUTION J.L. CHAMPEAUX, V. MASSON, F. CHAUVIN METEO-FRANCE/CNRM, 42, Av Coriolis, 31057 Toulouse Cedex, France Tph : (0)5 61 07 93 55, Fax : (0)5 61 07 96 26, email : Jean-louis.champeaux@meteo.fr Mots-clé : Landcover,surface parameters, leaf area index, atmospheric models

  2. SVAT SCHEME • Input parameters: • depending on soil • Percentage of sand and clay • Soil depth • depending on vegetation • Fraction of végétation (VEG) • Leaf area index (LAI) • - Minimal stomatal resistance • Rugosity (Z0) • dépending on soil and vegetation • Albedo • - Emissivity Atmospheric forcing

  3. Climate maps Temporal profiles NDVI NOAA/AVHRR or SPOT/VGT Land cover maps 225 ecosystems Soil types Database of of surface parameters

  4. Land cover map at 1km resolution (University of Maryland)

  5. Corine Land cover over Europe at 250m resolution

  6. Climate global map (Koeppe et de Lond, 1958)

  7. Different woodland types différent crop types

  8. NDVI profiles (Wooded grassland, closed shrubland)

  9. LAI=LAImin + (LAImax-LAImin) * (NDVI-NDVImin)/(NDVImax-NDVImin)

  10. Leaf Area Index for July

  11. Annual mean Albedo

  12. Comparison LAI ECOCLIMAP (in Y-axis) and LAI in situ (in X-axis)

  13. Comparison LAI June Between ECOCLIMAP POLDER and ISCLSCP2

  14. Daily Tmax Anomalies 10 years of simulation by comparison with the climatology CRU(1961-1990) for ECOCLIMAP and the old database Henderson-Sellers Old base New base New - old base

  15. THE DATABASE IS AVAILABLE ON THE WEB: http://www.cnrm.meteo.fr/gmme/PROJETS/ECOCLIMAP/page_ecoclimap.htm Project: UPDATE ECOCLIMAP using GLC2000 landcover map and Corine 2000 for Europe • Contribution of the GLC 2000 land cover map at global scale: • - Consistent legend with LCCS classifiers • Good description of the different biomes • Real 1km resolution The knowledge of regional experts will be very useful to specify the surface parameters: fraction of vegetation, LAI ……..

  16. CONCLUSIONS: • Global database of surface parameters at 1km resolution • (minimum) complete, robust and et coherent • Used in all the operational NWP and research models • of Meteo-France: • - ARPEGE CLIMAT • - ARPEGE NWP • - ALADIN • - MESO-NH

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