Articles | Volume 17, issue 14
https://doi.org/10.5194/amt-17-4493-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-17-4493-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Evaluation of optimized flux chamber design for measurement of ammonia emission after field application of slurry with full-scale farm machinery
Department of Biological and Chemical Engineering, Aarhus University, Gustav Wieds Vej 10D, 8000 Aarhus C, Denmark
Sasha D. Hafner
Department of Biological and Chemical Engineering, Aarhus University, Gustav Wieds Vej 10D, 8000 Aarhus C, Denmark
Andreas Pacholski
Thünen Institute for Climate-Smart Agriculture, Bundesallee 50, 38116 Braunschweig, Germany
Valthor I. Karlsson
Department of Civil and Architectural Engineering, Aarhus University, Inge Lehmanns Gade 10, 8000 Aarhus C, Denmark
Li Rong
Department of Civil and Architectural Engineering, Aarhus University, Inge Lehmanns Gade 10, 8000 Aarhus C, Denmark
Rodrigo Labouriau
Department of Mathematics, Aarhus University, Ny Munkegade 118, 8000 Aarhus C, Denmark
Jesper N. Kamp
Department of Biological and Chemical Engineering, Aarhus University, Gustav Wieds Vej 10D, 8000 Aarhus C, Denmark
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EGUsphere, https://doi.org/10.5194/egusphere-2026-5494, https://doi.org/10.5194/egusphere-2026-5494, 2026
This preprint is open for discussion and under review for Atmospheric Measurement Techniques (AMT).
Short summary
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Measuring ammonia from fertilised fields is difficult, and different methods give different results. We compared two methods during eight fertilisation campaigns and compared concentrations and emissions. Both captured the timing of emissions, but one measured 31% higher concentrations while estimating 23% lower emissions. The other did not yield usable results for 38% of measurement periods. Method choice and data gaps must therefore be considered when assessing agricultural ammonia emissions.
Yolanda Maria Lemes, Christoph Häni, Jesper Nørlem Kamp, and Anders Feilberg
Atmos. Meas. Tech., 16, 1295–1309, https://doi.org/10.5194/amt-16-1295-2023, https://doi.org/10.5194/amt-16-1295-2023, 2023
Short summary
Short summary
The implementation of a new method, line-averaged concentration measurement with a closed-path analyzer, will enable the measurement of fluxes of multiple gases from different types of sources and will evaluate the effects of mitigation strategies on emissions. In addition, this method allows for continuous online measurements that resolve temporal variation in ammonia emissions and the peak emissions of methane.
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Short summary
Field-applied animal slurry is a significant source of NH3 emission. A new system of dynamic flux chambers for NH3 measurements was developed and validated using three field trials in order to assess the variability after application with a trailing hose at different scales: manual (handheld) application, a 3 m slurry boom, and a 30 m slurry boom. The system facilitates NH3 emission measurement with replication after both manual and farm-scale slurry application with relatively high precision.
Field-applied animal slurry is a significant source of NH3 emission. A new system of dynamic...