ACE2, VODYANITSKIY Met Period 3
Days 181.0 to 187.0, 30-June to 06-July
Significant events at the ship during this period.
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July 3 (184): Initiation of First Full Lagrangian
Meteorological Summary: A low pressure system moved over the
ship on day 182 (1 July). This is seen in the radiosonde data showing no
boundary layer on day 182 (convective to over 5km), in the winds at all
levels under 5km becoming less southwesterly and more northwesterly, in
the surface solar radiation measurements (one of the most cloudy days),
and in the satellite pictures showing a clearly defined low. During most
of this period back trajectories arrived at the ship from the north for
altitudes of 750mb and lower. By the last day of this period (day 186,
5July) a high pressure system west of the Iberian Peninsula had moved sufficiently
north to draw trajectories from the east, drawing polluted air over the
ship. This feature is also seen in the radiosonde wind plot, with winds
at altitudes of 500 to 2000m shifting from westerly to easterly during
day 185. Boundary layer heights were near 2000m until day 185, except for
an undefined BL during the frontal passage on day 182 and also on day 184.
On day 186 BL heights dropped to 300m.
Met data available for Period 3
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Large cruise track map.
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Meteo outlooks, from the ops centre
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Radiosonde, Relative Humidity and winds,
0 to 5 km altitude, (see notes on main met page).
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Radiosonde, Potential Temperature and
winds, 0 to 5 km altitude (see notes on main met page).
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Boundary Layer Heights (see notes on main met
page).
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Surface Met data from ship.
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Radon and Ozone at the ship.
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Satellite - Maps
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30 June, 00Z IR; 12Z VIS,
IR, WV;
14Z AVHRR, 00Z
surface map12Z back trajectories;
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01 July, 00Z IR; 12Z VIS,
IR, WV;
14Z AVHRR, 00Z
surface map;12Z back trajectories;
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02 July, 00Z IR; 12Z VIS,
IR, WV;
14Z AVHRR, 00Z
surface map;12Z back trajectories;
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03 July, 00Z IR; 12Z VIS,
IR, WV;
14Z AVHRR, 00Z
surface map;12Z back trajectories;
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04 July, 00Z IR; 12Z VIS,
IR, WV;
14Z AVHRR, 00Z
surface map;12Z back trajectories;
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05 July, 00Z IR; 12Z VIS,
IR, WV;
14Z AVHRR, 00Z
surface map;12Z back trajectories;