A wind tunnel was used to measure odour emissions from the surface of a liquid manure storage basin on 15 June 1999 in Minnesota, USA. The basin stored manure from a 1200 sow gestation/farrowing complex, and was the second cell of a 2-stage manure storage system. Nine air samples were taken were taken from the same location on the liquid storage basin within a 3 h period at surface wind speeds of 0.19-1.14 m/s to assess the effect of surface wind speed on odour and hydrogen sulfide emission rate. Odour and emissions ranged from 15.9 to 180.7 ou m 3/s/m2 and generally increased with wind speed. Hydrogen sulfide emissions ranged from 7.8 to 47.9 micro g/s/m2 and also increased with wind speed. Lower wind speeds gave more consistent results.
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