Baltic Sea Ice Climate Workshop 2005 
44 
strong wind speed (7-9 m/s) and hence the wind direction is more important than the wind 
speed for the ice deformation during winter 2002/03. 
>■ O.OM 
~r\ 
0.0CK2S 
o 
■o 
<L> 
£ 
0.002 
.g 0.0013 
o 
Cl 
-i—r 
a 
0.001 
3= 0.0005 
Q 
o 
0 M 100 150 200 250 3» 550 
Wind direction (deg) 
Fig. 6. Deformed ice growth rate and wind direction. The numbers on the plot are date. 
Conclusions 
The correlations were found between the wind direction, wind speed and deformed ice growth 
rate. The strongest wind blow from SW and NNE in winter 2003. The most intensive ridging 
events occurs during wind blowing from SW, SE and NW. The growth rate of deformed ice was 
not strongly dependent on wind speed. The mean total concentration of deformed ice was up to 
12% from the area of Gulf of Finland. The modelled largest fraction of the deformed ice was 
located at 26.5-28 E. Comparatively less deformed ice was produced at 25.5-26.5E.