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| Titel |
Evaluating the potential of large-scale simulations to predict carbon fluxes of terrestrial ecosystems over a European Eddy Covariance network |
| VerfasserIn |
M. Balzarolo, S. Boussetta, G. Balsamo, A. Beljaars, F. Maignan, J.-C. Calvet, S. Lafont, A. Barbu, B. Poulter, F. Chevallier, C. Szczypta, D. Papale |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 11, no. 10 ; Nr. 11, no. 10 (2014-05-20), S.2661-2678 |
| Datensatznummer |
250117416
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| Publikation (Nr.) |
 copernicus.org/bg-11-2661-2014.pdf |
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| Zusammenfassung |
| This paper reports a comparison between large-scale simulations of three
different land surface models (LSMs), ORCHIDEE, ISBA-A-gs and CTESSEL, forced
with the same meteorological data, and compared with the carbon fluxes
measured at 32 eddy covariance (EC) flux tower sites in Europe. The results
show that the three simulations have the best performance for forest sites
and the poorest performance for cropland and grassland sites. In addition,
the three simulations have difficulties capturing the seasonality of
Mediterranean and sub-tropical biomes, characterized by dry summers. This
reduced simulation performance is also reflected in deficiencies in diagnosed
light-use efficiency (LUE) and vapour pressure deficit (VPD) dependencies
compared to observations. Shortcomings in the forcing data may also play a
role. These results indicate that more research is needed on the LUE and VPD
functions for Mediterranean and sub-tropical biomes. Finally, this study
highlights the importance of correctly representing phenology (i.e. leaf area
evolution) and management (i.e. rotation–irrigation for cropland, and
grazing–harvesting for grassland) to simulate the carbon dynamics of European
ecosystems and the importance of ecosystem-level observations in model
development and validation. |
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