The storage of slurry substantially contributes to the ammonia (NH₃) released from livestock production. This study quantified farm-scale NH₃ emissions from a circular open tank storing dairy cow slurry by means of continuous measurements over two years. Emissions were determined by scaling the product of line-integrated concentration measurements across the tank and wind speed measurements at 10 m height. The resulting data were calibrated to emissions determined using the integrated horizontal flux method. The data analysis was structured according to the main influencing factors: natural crust and meteorological conditions. The average annual emission was 0.065 g NH₃ m⁻² h⁻¹ with a maximum of 1.67 g NH₃ m⁻² h⁻¹. Annual emissions scaled to total ammoniacal nitrogen (TAN) were 3.3% of the TAN flow into the store. A natural crust on the slurry surface, which was strongly affected by agitation of the tank, diminished the gas release. An increasing time span after agitation led to correspondingly lower emissions. A greater filling level enhanced crust formation and induced an additional drop in emissions. Precipitation reduced emissions by 64%–86% compared to dry weather conditions. Higher wind speed and temperatures increased emissions. The emissions were highest in periods with weak or no crusting of the slurry surface, which covered 40% of the study time, but produced 61% of total emissions. The response of NH₃ emissions to the interactions of influencing factors, which might vary considerably between stores, suggests that these factors require consideration for the determination of emission factors used for inventory reporting.

淤浆的存储基本上有助于从畜牧生产中释放出的氨（NH ₃）。这项研究通过连续两年的测量，量化了存储奶牛粪便的圆形开放式储罐中农场规模的NH ₃排放量。排放的确定是通过对横跨储罐的线路综合浓度测量值与10 m高处的风速测量值的乘积进行缩放来确定的。将结果数据校准为使用集成水平通量方法确定的排放量。数据分析是根据主要影响因素进行构造的：自然地壳和气象条件。年平均排放量为0.065 g NH ₃ m ^-2 h ^-1，最大为1.67 g NH₃ m ^-2 h ^-1。按氨总氮（TAN）换算的年排放量是进入商店的TAN的3.3％。泥浆表面上的天然结皮受到罐搅拌的强烈影响，从而减少了气体释放。搅拌后时间跨度的增加导致排放量相应降低。较高的填充水平可促进结皮形成，并导致排放量进一步下降。与干旱天气相比，降水减少了64％–86％的排放。更高的风速和温度增加了排放。在泥浆表面薄弱或无结皮的时期，排放量最高，占研究时间的40％，但占总排放量的61％。NH ₃的响应 影响因素相互作用的排放量（在不同商店之间可能有很大差异）表明，在确定用于清单报告的排放因子时需要考虑这些因素。