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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.

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Presentation on theme: "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."— Presentation transcript:

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 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 SVAT SCHEME

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

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 différent crop types Different woodland types

8 NDVI profiles (Wooded grassland, closed shrubland)

9

10

11 LAI=LAI min + (LAI max -LAI min ) * (NDVI-NDVI min )/(NDVI max -NDVI min )

12 Leaf Area Index for July

13 Annual mean Albedo

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

15 Comparison LAI June Between ECOCLIMAP POLDER and ISCLSCP2

16 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

17 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 …….. THE DATABASE IS AVAILABLE ON THE WEB: http://www.cnrm.meteo.fr/gmme/PROJETS/ECOCLIMAP/page_ecoclimap.htm

18 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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