Soils are considerable sources for gases emitted to the atmosphere. Continuous measurement of gas emissions from soils is by far not trivial. In a recent PhD project we showed that even data from commercial soil chambers suffer from considerable inaccuracies during periods with frequent micrometeorological conditions (Brændholt et al. 2017).
We have now optimised the set-up of our soil chambers and are starting a series of field experiments to document the improvements. Both the field experiments and the data will give an excellent opportunity for an experimental student project, including the possibility to publish the results.
The anticipated methodological improvement will be of utmost relevance for ecosystem field studies such as currently built up in the Danish contribution to the Integrated Carbon Observation System (http://www.icos-denmark.dk/
Brændholt, A., K. Steenberg Larsen, A. Ibrom and K. Pilegaard (2017). "Overestimation of closed-chamber soil CO2 effluxes at low atmospheric turbulence." Biogeosciences 14(6): 1603-1616.
Interest in environmental field methods and research