What Can We Learn for a Better Understanding of the Turbulent Exchange Processes Occurring at FLUXNET Sites?

  • Thomas Foken
Part of the Ecological Studies book series (ECOLSTUD, volume 229)


This chapter summarizes the results of all 18 chapters and has a special focus on flux measurements in a changing environment, linking atmospheric turbulence and air chemistry, an optimal data quality protocol, and recommendations for the future of FLUXNET sites. It was found that windthrow and black beetle pests are responsible for the development of a larger heterogeneity of the forest site over the nearly 20-year observing period, with the consequence of an increase in carbon uptake. This heterogeneity, and not only the footprint and target area, should be included in a site description; however, such a heterogeneity index has yet to be developed. The developed coupling schema is extremely useful for interpreting chemical flux measurements, and it should be used together with the Damköhler number to characterize chemical reactions in a turbulent atmosphere in and above a forest. Furthermore, the possibility of characterizing the coupling should be implemented in each forest flux measurement program.


Large Eddy Simulation Forest Edge Flux Measurement Carbon Uptake Sonic Anemometer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Because most of the conclusions have been made above, I would like to highlight some personal feelings regarding this book. The book is highly interdisciplinary; not only did experimentalists and modelers come together but also micrometeorologists, climatologists, atmospheric chemists, ecologists, and hydrologists. As well, groups that have been operating for a long time in the Waldstein area have brought their research together and compared their data under the subject of fluxes on short time scales. In this context, Chaps.  5,  7, and  15 are remarkable. Therefore, I want to acknowledge all scientists who were responsible for the 18 chapters and three appendixes or supported these, as well as all agencies (for details see the relevant chapters) and the University of Bayreuth with the Bayreuth Center of Ecology and Environmental Research (BayCEER), who supported the research at the Waldstein sites and this book.


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© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.BischbergGermany
  2. 2.Bayreuth Center of Ecology and Environmental ResearchUniversity of BayreuthBayreuthGermany

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