KLIWAS 
Seite 25 
SST - Front Zone Vector Direction 
AVHRR 
mean 1990-2011 
1 1 NOV 
mean 1990-2011 
1 2 DEC 
frontzone_vector_direction 
West 
North East South 
-A- 
West 
{¡rallient vector points from cold to warm 
KLIWAS 
Climatology 
of North Sea 
Fronts 
Fig. 15: Direction of mean gradient vector for frontal zone based on the data of the AVHRR 
sensor on NOAA and METOP 1990 - 2011 and for months