Distinction between different slurry application technics by their ammonia emission with FTIR open-path measurements and dispersion modeling

Georg Depta; Stefan Neser; Sabine C. Becher; Andreas Gronauer; Ina Steinecke; Achim Sedlmaier; Klaus Schaefer

doi:10.1117/12.274717

22 May 1997 Distinction between different slurry application technics by their ammonia emission with FTIR open-path measurements and dispersion modeling

Georg Depta, Stefan Neser, Sabine C. Becher, Andreas Gronauer, Ina Steinecke, Achim Sedlmaier, Klaus Schaefer

Author Affiliations +

Proceedings Volume 3106, Spectroscopic Atmospheric Monitoring Techniques; (1997) https://doi.org/10.1117/12.274717
Event: Environmental Sensing III, 1997, Munich, Germany

Abstract

Agriculture is looked at contributing over 90 percent of the known NH₃ emission in Germany. A large share is due to spreading liquid manure; at sunshine, the loss off nitrogen ia NH₃ emissions may be up to 90 percent compared to the NH₄-bound nitrogen in the slurry. In a practice-oriented experiment, four different spreading techniques were compared. Four plots 36 m wide were laid out along the two main wind directions in a valley. In between two plots each an open path Fourier-transform IR (FTIR) spectrometer was placed on a rotating bearing to allow 180 degree swings on the altogether four IR sources. In combination with meteorological data emission rates could be estimated and compared. Even at rather bad weather conditions the application technics could be classified clearly by their ammonia emission.

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Georg Depta, Stefan Neser, Sabine C. Becher, Andreas Gronauer, Ina Steinecke, Achim Sedlmaier, and Klaus Schaefer "Distinction between different slurry application technics by their ammonia emission with FTIR open-path measurements and dispersion modeling", Proc. SPIE 3106, Spectroscopic Atmospheric Monitoring Techniques, (22 May 1997); https://doi.org/10.1117/12.274717

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