Meteorological data for the sampling period is
shown in Figure 2. During the bloom period both
wind and precipitation were weak, and wind direction
fluctuated between the W and E quadrants. In the day
before the bloom (17 April), relatively higher
precipitation occurred (15 mm/day) and the wind was
extremely low, with absence (0 km/h) of wind from
the afternoon until the morning of the next day (18
April). Wind direction in the day of the bloom was
ENE which is directly towards the sampling area. Air
temperature showed an increase towards the end of
the sampling period, with diurnal maximums around
mid-day.