The Use of FTIR-Spectrometry in Combination with Different Biosphere-Atmosphere Flux Measurement Techniques - Towards an Interdisciplinary Approach in Earth System Science - page 75

conditions. Figure 2 also shows a clear diurnal air temperature pattern, which (not
shown) correlates well with chamber CO 2 - fl uxes over the whole measurement

period.

4 Discussion and Conclusion

The developed technique consisting of a FTIR connected to a ux measurement

technique has multiple advantages. The combination of two different

fl

ux methods
synchronically provides the opportunity to study different ecosystem processes and
scales at the same time. The setup is

fl

flexible and easily adapted when research
focus is shifted (requirement of higher precision or higher frequency) and can easily
be expanded by different concentration or

fl

flux measurement techniques such as the
boundary layer method or by concentration pro

fl

le measurements. A possible dis-

advantage of using an FTIR for field measurements is the high power demand, the

costs and the size of the instrument. An advantage of the use of FTIR-spectrometry
is the opportunity to study different (greenhouse) gas species simultaneously.
Conclusively, the new setup gives the opportunity to study biosphere-atmosphere
exchange in detail and its application can improve our understanding of biosphere-
atmosphere exchange dynamics.

Acknowledgments We would like to thank the Torfwerke Quickborn and David Holl, Norman
R ü ggen, Christian Wille and Lars Kutzbach from the university of Hamburg for their help and
cooperation during the field campaign in Himmelmoor. Also, we are grateful for the support of the
InGOS-project (European Community Seventh Framework Programme (FP7/2007 - 2013)). Fur-
thermore, we would like to thank the two reviewers for their comments on the subject.

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