Measuring the emissions of trace compounds from a livestock building

Inverse modeling with a Gaussian dispersion model is used to determine emission rates of diffuse sources from experimental data. The path-integrated gaseous concentrations of an exhaust are measured downwind of the source by open-path FTIR absorption spectroscopy. Additionally, a Doppler mini sodar was used to determine the vertical wind profile and an aerosol lidar to measure the spatial distribution of particulate emissions. The particle- size distribution was contributed by a high-volume aerosol impactor. Results of emission investigations form a piggery are discussed.