Evaporation over a heterogeneous land surface

The EVA-GRIPS Project

verfasst von

Heinz Theo Mengelkamp, F. Beyrich, G. Heinemann, F. Ament, J. Bange, F. Berger, J. Bösenberg, T. Foken, B. Hennemuth, C. Heret, S. Huneke, K. P. Johnsen, M. Kerschgens, W. Kohsiek, J. P. Leps, C. Liebethal, H. Lohse, M. Mauder, W. Meijninger, S. Raasch, C. Simmer, T. Spieß, A. Tittebrand, J. Uhlenbrock, P. Zittel

Abstract

The representation of sudgrid-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.

Organisationseinheit(en)

Institut für Meteorologie und Klimatologie

Externe Organisation(en)

Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH
Deutscher Wetterdienst (DWD)
Universität zu Köln
Rheinische Friedrich-Wilhelms-Universität Bonn
Technische Universität Braunschweig
Technische Universität Dresden
Max-Planck-Institut für Meteorologie
Universität Bayreuth
Royal Netherlands Meteorological Institute
Wageningen University and Research

Typ

Artikel

Journal

Bulletin of the American Meteorological Society

Band

87

Seiten

775-786

Anzahl der Seiten

12

ISSN

0003-0007

Publikationsdatum

06.2006

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Atmosphärenwissenschaften

Ziele für nachhaltige Entwicklung

SDG 13 – Klimaschutzmaßnahmen

Elektronische Version(en)

https://doi.org/10.1175/BAMS-87-6-775 (Zugang: Offen)