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          Institute: MPI für Meteorologie     Collection: Climate Processes     Display Documents



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ID: 282123.0, MPI für Meteorologie / Climate Processes
Evaporation over a heterogeneous land surface - The EVA-GRIPS project
Authors:Mengelkamp, H. T.; Beyrich, F.; Heinemann, G.; Ament, F.; Bange, J.; Berger, F.; Bösenberg, J.; Foken, T.; Hennemuth, B.; Heret, C.; Huneke, S.; Johnsen, K. P.; Kerschgens, M.; Kohsiek, W.; Leps, J. P.; Liebethal, C.; Lohse, H.; Mauder, M.; Meijninger, W.; Raasch, S.; Simmer, C.; Spiess, T.; Tittebrand, A.; Uhlenbrock, J.; Zittel, R.
Language:English
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Bulletin of the American Meteorological Society
Journal Abbrev.:Bull. Amer. Meteorol. Soc.
Volume:87
Start Page:775
End Page:786
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The representation of subgrid-scale surface heterogeneities in numerical weather and climate models has been a challenging problem for more than a decade. The Evaporation at Grid and Pixel Scale (EVA-GRIPS) project adds to the numerous studies on vegetation-atmosphere interaction processes through a comprehensive field campaign and through simulation studies with land surface schemes and mesoscale models. The mixture of surface types in the test area in eastern Germany is typical for larger parts of northern Central Europe. The spatial scale considered corresponds to the grid scale of a regional atmospheric weather prediction or climate model and to the pixel scale of satellite images. Area-averaged fluxes derived from point measurements, scintillometer measurements, and a helicopter-borne turbulence probe were widely consistent with respect to the sensible heat flux. The latent heat flux from the scintillometer measurements is systematically higher than the eddy covariance data. Fluxes derived from numerical simulations proved the so-called mosaic approach to be an appropriate parameterization for subgrid heterogeneity.
Free Keywords:HYDROLOGIC-MODELS; FLUX MEASUREMENTS; DRAINAGE-BASIN; ENERGY-BALANCE; BOUNDARY-LAYER; SCALE; PARAMETERS; AREA; LANDSCAPE; CLIMATE
External Publication Status:published
Document Type:Article
Affiliations:MPI für Meteorologie/Land in the Earth System (2005-)
External Affiliations:GKSS Forschungszentrum Geesthacht GmbH, Inst Coastal Res, Geesthacht, D-21502 Germany
German Meteorol Serv, Meteorol Observ Lindenberg, Tauche, Germany
Univ Bonn, Inst Meteorol, Bonn, D-5300 Germany
Univ Cologne, Inst Geophys & Meteorol, Cologne, D-5000 Germany
Tech Univ Carolo Wilhelmina Braunschweig, Inst Aerosp Syst, Braunschweig, D-3300 Germany
Univ Bayreuth, Dept Micrometeorol, Bayreuth, Germany
Dresden Univ Technol, Inst Hydrol & Meteorol, Tharandt, Germany
Univ Hannover, Inst Meteorol & Climatol, Hannover, Germany
KNMI, De Bilt, Netherlands
Univ Wageningen & Res Ctr, Wageningen, Netherlands
Identifiers:DOI:10.1175/BAMS-87-6-775
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