Preface The expedition ARK XIX/3 with the German icebreaking RV ...

At end of the leg pressure rising build up a high southwest of Ireland and weather
improved while arriving at Galway on the 2003-06-20.
A. 2.2 Weather situation during the cruise leg ARK XIX/3b
Sußebach, J.
During the transit fom Tromsø to the research area above the Håkon Mosby Mud Volcano
a small low north of the operation area caused southerly winds up to force 5Bft and some
rain. Later in the afternoon the wind veered to Northwest.
From 28th until 30th high pressure influence caused weak winds and mainly misty or
foggy weather. According to this situation the lines of temperature and dewpoint from the
radio sounding of 28 th 12 UTC
show a significant low inversion
with moist air below.
Fig. A2.2- 1: Radio Sounding 2003-06-28 12 UTC
On the first day of July a weak
coldfront passed our area. In its
rear unstable air with good
visibilities, rapid change of cloud
coverage and some showers
dominated the actual weather.
The wind blew mainly weak out of various directions until 2003-07-06.
During the following days until 2003-07-10 small lows over the Norwegian Sea and the
Greenland Sea caused sometimes wind force 5 Bft. Due to unstable air we had good to
excellent visibilities interrupted by some showers.
During the next period until 2003-07-15 wind force 5 Bft was observed at the most. With it
mild and humid air caused misty weather very often. In the afternoon and evening of
2003-07-12 and in the night to 2003-07-13 dense fog wrapped our ship.
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