<p>Extensive field measurements have been performed at three CarboEurope-Integrated Project forest sites with different topography (Renon/Ritten, Italian Alps, Italy; Wetzstein, Thuringia, Germany; Norunda, Uppland, Sweden) to evaluate the relevant terms of the carbon balance by measuring CO2 concentrations [CO2] and the wind field in a 3D multitower cube setup. The same experimental setup (geometry and instrumentation) and the same methodology were applied to all the three experiments. Refer to Feigenwinter et al. (2008), <a href="https://doi.org/10.1016/j.agrformet.2007.08.013">https://doi.org/10.1016/j.agrformet.2007.08.013</a> for more details of the ADVEX campaign.</p>This work received funding from CE-IP (CarboEurope-Integrated Project) of the European Commission (GOCECT2003-
505572).
Special thanks go to the following administrative, scientific and technical staff: to Luigi Minach and Guenther Kerschbaumer of the Agency of Environment and to workers from the Forest Service of the Autonomous Province of
Bolzano, Italy; to Michael Hielscher and many others from the field division of the Max Planck Institute for Biogeochemistry,
Jena, Germany; to Thomas Pluntke from the Institute of Hydrology and Meteorology of the Technical University of Dresden,
Germany; to Alain Debacq from the Faculte´ Universitaire des Sciences Agronomiques de Gembloux, Belgium; to Monika trömgren, Anders Bath and Lars-Olov Karlsson of the GeoBioshpere Science Centre of the Lund University, Sweden. The corresponding author's thanks go to Roland Vogt and Eberhard Parlow, Institute ofMeteorology, Climatology and Remote Sensing at University Basel, Switzerland, for their support in instrumentation and infrastructure. The ADVEX field activities would not have been possible without the substantial support from all participating institutions