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  Global intercomparison of 12 land surface heat flux estimates

Jimenez, C., Prigent, C., Mueller, B., Seneviratne, S. I., Mccabe, M. F., Wood, E. F., et al. (2011). Global intercomparison of 12 land surface heat flux estimates. Journal of Geophysical Research-Atmospheres, 116, D02102. doi:10.1029/2010jd014545.

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BGC1457.pdf (Verlagsversion), 6MB
 
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 Urheber:
Jimenez, C., Autor
Prigent, C., Autor
Mueller, B., Autor
Seneviratne, S. I., Autor
Mccabe, M. F., Autor
Wood, E. F., Autor
Rossow, W. B., Autor
Balsamo, G., Autor
Betts, A. K., Autor
Dirmeyer, P. A., Autor
Fisher, J. B., Autor
Jung, M.1, Autor           
Kanamitsu, M., Autor
Reichle, R. H., Autor
Reichstein, M.1, Autor           
Rodell, M., Autor
Sheffield, J., Autor
Tu, K., Autor
Wang, K., Autor
Affiliations:
1Research Group Biogeochemical Model-data Integration, Dr. M. Reichstein, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1497760              

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Schlagwörter: net ecosystem exchange atmosphere water flux space-time climate islscp-ii data soil-moisture satellite-observations ecmwf model data sets evapotranspiration vegetation
 Zusammenfassung: A global intercomparison of 12 monthly mean land surface heat flux products for the period 1993-1995 is presented. The intercomparison includes some of the first emerging global satellite-based products (developed at Paris Observatory, Max Planck Institute for Biogeochemistry, University of California Berkeley, University of Maryland, and Princeton University) and examples of fluxes produced by reanalyses (ERA-Interim, MERRA, NCEP-DOE) and off-line land surface models (GSWP-2, GLDAS CLM/Mosaic/Noah). An intercomparison of the global latent heat flux (Q(le)) annual means shows a spread of similar to 20 W m(-2) (all-product global average of similar to 45 W m(-2)). A similar spread is observed for the sensible (Q(h)) and net radiative (R-n) fluxes. In general, the products correlate well with each other, helped by the large seasonal variability and common forcing data for some of the products. Expected spatial distributions related to the major climatic regimes and geographical features are reproduced by all products. Nevertheless, large Q(le) and Q(h) absolute differences are also observed. The fluxes were spatially averaged for 10 vegetation classes. The larger Q(le) differences were observed for the rain forest but, when normalized by mean fluxes, the differences were comparable to other classes. In general, the correlations between Q(le) and R-n were higher for the satellite-based products compared with the reanalyses and off-line models. The fluxes were also averaged for 10 selected basins. The seasonality was generally well captured by all products, but large differences in the flux partitioning were observed for some products and basins.

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Sprache(n): eng - English
 Datum: 2011
 Publikationsstatus: Erschienen
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1029/2010jd014545
ISI: ://000286519400002
Anderer: BGC1457
 Art des Abschluß: -

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Titel: Journal of Geophysical Research-Atmospheres
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Washington, D.C. : American Geophysical Union
Seiten: - Band / Heft: 116 Artikelnummer: - Start- / Endseite: D02102 Identifikator: ISSN: 0148-0227
CoNE: https://pure.mpg.de/cone/journals/resource/991042728714264_1