Field measurements were carried out from 12 July until 21 July
2004, on the eastern shore of the Chesapeake Bay, in Maryland,
USA (latitude 3885404500N; longitude 76890400W). The field site
was a flat, 0.2 km2 corn field. During the course of the
experiments the corn plants were fully matured and pollinating.
Within the measurement site, the average corn height (h)
was 3m, measured from the ground to the top of the tassels.
Three different towers, two measuring local meteorological
conditions and the third measuring vertical profiles of pollen
concentration, were positioned near the center of the field as
shown schematically in Fig. 2. Local meteorological conditions,
averaged over 15 min intervals, were monitored continuously
Field measurements were carried out from 12 July until 21 July
2004, on the eastern shore of the Chesapeake Bay, in Maryland,
USA (latitude 3885404500N; longitude 76890400W). The field site
was a flat, 0.2 km2 corn field. During the course of the
experiments the corn plants were fully matured and pollinating.
Within the measurement site, the average corn height (h)
was 3m, measured from the ground to the top of the tassels.
Three different towers, two measuring local meteorological
conditions and the third measuring vertical profiles of pollen
concentration, were positioned near the center of the field as
shown schematically in Fig. 2. Local meteorological conditions,
averaged over 15 min intervals, were monitored continuously
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