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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Coupling processes and exchange of energy and reactive and non-reactive trace gases at a forest site - Results of the EGER experiment
Atmospheric Chemistry and Physics, Volume 12, No. 4, Year 2012
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Description
To investigate the energy, matter and reactive and non-reactive trace gas exchange between the atmosphere and a spruce forest in the German mountain region, two intensive measuring periods were conducted at the FLUXNET site DE-Bay (Waldstein-Weidenbrunnen) in September/October 2007 and June/July 2008. They were part of the project "ExchanGE processes in mountainous Regions" (EGER). Beyond a brief description of the experiment, the main focus of the paper concerns the coupling between the trunk space, the canopy and the above-canopy atmosphere. Therefore, relevant coherent structures were analyzed for different in- and above canopy layers, coupling between layers was classified according to already published procedures, and gradients and fluxes of meteorological quantities as well as concentrations of non-reactive and reactive trace compounds have been sorted along the coupling classes. Only in the case of a fully coupled system, it could be shown, that fluxes measured above the canopy are related to gradients between the canopy and the above-canopy atmosphere. Temporal changes of concentration differences between top of canopy and the forest floor, particularly those of reactive trace gases (NO, NO2, O3, and HONO) could only be interpreted on the basis of the coupling stage. Consequently, only concurrent and vertically resolved measurements of micrometeorological (turbulence) quantities and fluxes (gradients) of trace compounds will lead to a better understanding of the forest-atmosphere interaction. © 2012 Author(s).
Authors & Co-Authors
Foken, Thomas
Germany, Bayreuth
Universität Bayreuth
Meixner, Franz X.
Germany, Mainz
Max Planck Institute for Chemistry
Zimbabwe, Harare
University of Zimbabwe
Falge, Eva M.
Germany, Mainz
Max Planck Institute for Chemistry
Zetzsch, C.
Germany, Bayreuth
Universität Bayreuth
Serafimovich, A.
Germany, Bayreuth
Universität Bayreuth
Bargsten, Anika
Germany, Mainz
Max Planck Institute for Chemistry
Behrendt, Thomas
Germany, Mainz
Max Planck Institute for Chemistry
Biermann, T.
Germany, Bayreuth
Universität Bayreuth
Breuninger, C.
Germany, Mainz
Max Planck Institute for Chemistry
Dix, S.
Germany, Bayreuth
Universität Bayreuth
Germany, Regensburg
Now At: Tüv Süd Industrie Service Gmbh Wind Cert Services
Gerken, T.
Germany, Bayreuth
Universität Bayreuth
Hunner, M.
Germany, Bayreuth
Universität Bayreuth
Germany, Regensburg
Now At: Tüv Süd Industrie Service Gmbh Wind Cert Services
Lehmann-Pape, L.
Germany, Mainz
Max Planck Institute for Chemistry
Hens, Korbinian
Germany, Mainz
Max Planck Institute for Chemistry
Jocher, Georg
Germany, Bayreuth
Universität Bayreuth
Germany, Bremerhaven
Alfred-wegener-institut Helmholtz-zentrum Für Polar- Und Meeresforschung
Kesselmeier, J.
Germany, Mainz
Max Planck Institute for Chemistry
Lüers, J.
Germany, Bayreuth
Universität Bayreuth
Moravek, A.
Germany, Mainz
Max Planck Institute for Chemistry
Plake, D.
Germany, Mainz
Max Planck Institute for Chemistry
Riederer, M.
Germany, Bayreuth
Universität Bayreuth
Rütz, F.
Germany, Bayreuth
Universität Bayreuth
Scheibe, M.
Germany, Mainz
Max Planck Institute for Chemistry
Germany, Koln
Deutsches Zentrum Für Luft- Und Raumfahrt Dlr
Siebicke, Lukas
Germany, Bayreuth
Universität Bayreuth
France, Paris
Inrae
Sörgel, M.
Germany, Bayreuth
Universität Bayreuth
Staudt, K.
Germany, Bayreuth
Universität Bayreuth
Switzerland, Zurich
Forschungsanstalt Agroscope Reckenholz-tanikon
Trebs, Ivonne
Germany, Mainz
Max Planck Institute for Chemistry
Tsokankunku, A.
Germany, Mainz
Max Planck Institute for Chemistry
Welling, M.
Germany, Mainz
Max Planck Institute for Chemistry
Wolff, V.
Germany, Mainz
Max Planck Institute for Chemistry
Switzerland, Zurich
Forschungsanstalt Agroscope Reckenholz-tanikon
Zhu, Z.
Germany, Mainz
Max Planck Institute for Chemistry
China, Beijing
Chinese Academy of Sciences
Statistics
Citations: 30
Authors: 30
Affiliations: 9
Identifiers
Doi:
10.5194/acp-12-1923-2012
ISSN:
16807316
e-ISSN:
16807324
Study Approach
Quantitative