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R/V Ronald H. Brown Daily Summaries

Select a day 2002 07 12 2002 07 13 2002 07 14 2002 07 15 2002 07 16 2002 07 17 2002 07 18 2002 07 19 2002 07 20 2002 07 21 2002 07 22 2002 07 23 2002 07 24 2002 07 25 2002 07 26 2002 07 27 2002 07 28 2002 07 29 2002 07 30 2002 07 31 2002 08 01 2002 08 02 2002 08 03 2002 08 04 2002 08 05 2002 08 06 2002 08 07 2002 08 08 2002 08 09 2002 08 10

Daily Summary August 6, 2002, DOY = 218

The cold front passed the ship at 0245 UTC with a dramatic wind shift to NE and then NW. Barometric pressure and O3 began to rise. Aerosol light scattering and SO2 concentrations decreased. By 0900 UTC light scattering by aerosols (green) was one tenth that of yesterday. In the NW flow the ship was downwind of Portsmouth during the night. Plumes of SO2 were observed. The plume of a large tanker leaving Portland was sampled by Brown at 1200 UTC. At 1330 the wind came abaft the beam for operations at Star Island. Two passengers were embarked at 1500 and the ship departed the IOS for Nantucket. The wind during this transit was behind the ship (mast blower was reversed).

For all plots, time is indicated in GMT. Eastern time is -5 hours.

Location	Temperature, Pressure	Sea Surface Temperature, Relative Humidity
True Wind Speed, Direction	Ship Speed, Direction	Relative Wind Speed, Direction

Textual information and data plots are for quicklook and overview purposes only.

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