Poster, 6th CarboEurope-IP Integrated Project Meeting, Jena: 29.09.2008 - 03.10.2008
Abstract:
Different physical, chemical and biological processes in the soil-vegetation-boundary-layer system were investigated in the frame of EGER (ExchanGE processes in mountainous Regions) project. The main aim is to quantify soil, in-canopy and atmospheric phenomena, their interactive coupling and corresponding role for budgets by observing diurnal and annual cycles of energy, water, and trace gases. Field experiments in 2007 and 2008 were performed at the FLUXNET site Waldstein/Weidenbrunnen in the Fichtelgebirge mountains. Turbulence structure, advection, flux gradients of meteorological and chemical quantities were observed during two intensive observation periods. The turbulence structure was obtained by a vertical profile of sonic anemometers covering all layers of the forest up to the lower part of the roughness sublayer. All heights were additionally equipped with fast CO2 and H2O analysers for assessing the carbon dioxide and water vapour budgets. The vertical profile was continued up to a height of several hundreds of meters above ground by using acoustic and radar remote sensing. To monitor advective flow in the sub-canopy space small masts were set up in the trunk space. Field observations are complemented by simulations of the ACASA model. The obtained results are essential for the advanced, scale dependent description of the landscape. Our contribution will present an overview of the facility and first experimental and model results.