Application of a novel photoacoustic instrument for ammonia concentration and flux monitoring above agricultural landscape - results of a field measurement campaign in Choryn, Poland

摘要

A one-week field measurement campaign has been carried out on a winter wheat field nearby a cattle farm in Poland. The aim of the campaign was to demonstrate applicability of a recently developed photoacoustic ammonia monitoring instrument for environmental research purposes. The photoacoustic instrument was operated with three sampling lines, and a wet-chemical AMANDA instrument with one sampling inlet was used as a reference for ammonia concentration monitoring. In addition to the ammonia measurements, several meteorological parameters were measured with a micro-meteorological station. The campaign was started with instrument intercomparison when all inlets of the ammonia monitoring instruments were placed at the same point. Good agreement has been found between concentration data measured by the three channels of the photoacoustic instrument and the AMANDA, which proves reliability of the instruments.