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| Titel |
ECOCLIMAP-II/Europe: a twofold database of ecosystems and surface parameters at 1 km resolution based on satellite information for use in land surface, meteorological and climate models |
| VerfasserIn |
S. Faroux, A. T. Kaptué Tchuenté, J.-L. Roujean, V. Masson, E. Martin, P. Moigne |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 6, no. 2 ; Nr. 6, no. 2 (2013-04-30), S.563-582 |
| Datensatznummer |
250017809
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| Publikation (Nr.) |
 copernicus.org/gmd-6-563-2013.pdf |
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| Zusammenfassung |
| The overall objective of the present study is to introduce the new
ECOCLIMAP-II database for Europe, which is an upgrade for this region of the
former initiative, ECOCLIMAP-I, already implemented at global scale. The
ECOCLIMAP programme is a dual database at 1 km resolution that includes an
ecosystem classification and a coherent set of land surface parameters that
are primarily mandatory in meteorological modelling (notably leaf area index
and albedo). Hence, the aim of this innovative physiography is to enhance
the quality of initialisation and impose some surface attributes within the
scope of weather forecasting and climate related studies. The strategy for
implementing ECOCLIMAP-II is to depart from prevalent land cover products
such as CLC2000 (Corine Land Cover) and GLC2000 (Global Land Cover) by
splitting existing classes into new classes that possess a better regional
character by virtue of the climatic environment (latitude, proximity to the
sea, topography). The leaf area index (LAI) from MODIS and normalized difference vegetation index (NDVI) from
SPOT/Vegetation (a global monitoring system of vegetation) yield the two proxy variables that were considered here in
order to perform a multi-year trimmed analysis between 1999 and 2005 using
the K-means method. Further, meteorological applications require each land
cover type to appear as a partition of fractions of 4 main surface types or
tiles (nature, water bodies, sea, urban areas) and, inside the nature tile,
fractions of 12 plant functional types (PFTs) representing generic
vegetation types – principally broadleaf forest, needleleaf forest, C3 and
C4 crops, grassland and bare land – as incorporated by the SVAT model ISBA
(Interactions Surface Biosphere Atmosphere) developed at Météo France. This landscape division also forms the
cornerstone of a validation exercise. The new ECOCLIMAP-II can be verified
with auxiliary land cover products at very fine and coarse resolutions by
means of versatile land occupation nomenclatures. |
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