Articles | Volume 15, issue 24
https://doi.org/10.5194/acp-15-14055-2015
https://doi.org/10.5194/acp-15-14055-2015
Research article
 | 
21 Dec 2015
Research article |  | 21 Dec 2015

Validation of farm-scale methane emissions using nocturnal boundary layer budgets

J. Stieger, I. Bamberger, N. Buchmann, and W. Eugster

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Cited articles

ART: Agricultural CH4 and N2O emissions in Switzerland, Agroscope Reckenholz Tänikon Research Station (ART), QA/QC Internal Report, Zurich, Switzerland, 61 pp., 2012.
Baldocchi, D., Detto, M., Sonnentag, O., Verfaillie, J., The, Y., Silver, W., and Kelly, N.: The challenges of measuring methane fluxes and concentrations over a peatland pasture, Agr. Forest Meteorol., 153, 177–187, https://doi.org/10.1016/j.agrformet.2011.04.013, 2012.
Bamberger, I., Stieger, J., Buchmann, N., and Eugster, W.: Spatial variability of methane: Attributing atmospheric concentrations to emissions, Environ. Pollut., 190, 65–74, https://doi.org/10.1016/j.envpol.2014.03.028, 2014.
Beswick, K., Simpson, T., Fowler, D., Choularton, T., Gallagher, M., Hargreaves, K., Sutton, M., and Kaye, A.: Methane emissions on large scales, Atmos. Environ., 32, 3283–3291, https://doi.org/10.1016/S1352-2310(98)00080-6, 1998.
Choularton, T., Gallagher, M., Bower, K., Fowler, D., Zahniser, M., Kaye, A., Monteith, J., and Harding, R.: Trace gas flux measurements at the landscape scale using boundary-layer budgets, Philos. T. R. Soc. A, 351, 357–369, https://doi.org/10.1098/rsta.1995.0039, 1995.
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At night, concentrations of methane and other trace gases in the near-surface atmosphere increase due to limited turbulent mixing and confluence of cold air from valley slopes towards the valley bottom. Here we used a tethered balloon sounding system to obtain time-height profiles of methane concentrations from which we compute methane emissions. These flux estimates serve as the first experimental validation of Swiss agricultural methane emissions at the farm scale.
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