Baltic Sea

6.4
6.3
170 m
200 m
215 m
Daily Temperatures Mooring SW
6.2
6.1
Temperature ( o C)
6
5.9
5.8
5.7
5.6
5.5
5.4
22/06/06 11/08/06 30/09/06 19/11/06 08/01/07 27/02/07
Date (dd/mm/yy)
Figure 4.6: Temperatures in 170, 200 and 215 m depth of mooring SW.
At the start of the recordings daily temperature records of mooring SW in 170 m (Fig. 4.6)
were more varied and also somewhat warmer than temperatures in 200 m and 215 m depth.
Temperatures measured by the deepest sensor showed the least variability. The cold inow
recorded by mooring SW was rst recognised on 30 September by the top sensor in 170 m and
lasted until 14 December 2006. The inow signals had a delay of nearly two weeks before a
drop in temperatures was recognised by the mid sensor. Temperatures recorded by the deepest
current meter showed only minimal changes and little variations. Coldest temperatures
(5.7 ◦ C) and biggest variations where recorded by the sensor in 170 m depth. For about a
month temperatures of all three sensors were separated, with the coldest temperatures in 170
m, temperatures in 200 m becoming slightly warmer and the deepest sensor in 215 m recording
the highest values, until around 20 January 2007 when temperatures in the upper and mid
sensor rose and temperatures of the water column below 170 m oscillated around 5.95 ◦ C.
Naturally the top temperature sensor in 170 m showed the biggest temperature variations
throughout the whole deployment period, since the basin is closed from 170 m downwards
and intrusions are more likely in these parts than in the deep enclosed parts of the basin.
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