QuantiAGREMI project partners KIT, METAS, UKCEH and TI were joined by Bern University of Applied Sciences (Switzerland), EMORY University (USA), INRAE (France) to test and evaluate different measurement systems for the determination of ammonia (NH3) fluxes. Since NH3 has distinct adhesive properties and is extremely soluble in water, NH3 flux measurements have remained a challenge. As such, quantification of the uncertainty of different NH3 flux methods is pertinent to improve quantification of NH3 emissions and deposition around livestock buildings. To address both emission and deposition fluxes a series of experiments was conducted during a field study in June/July 2023 in Germany. Background measurements were undertaken where it was assumed deposition fluxes would be the dominant feature.
Subsequently, a known amount of NH3 was released from a circular area within a small footprint of the field. Finally, a known amount of manure was applied to the entire agricultural site in order to cover the footprints of the different measurement approaches. This experiment will contribute to contextualize different measurement approaches as well as identify and characterize technologies for NH3 flux measurements.
