KLIWAS 
Seite 24 
KLIWAS 
Climatology 
of North Sea 
Fronts 
SST - Front Zone Vector Magnitude 
AVHRR 
mean 1990-2011 
01 JAN 
AVHRR 
mean 1990-2011 
10 OCT 
frontzone_vector 
magnitude [K/km] 
0 0.02 0.050.06 o.1 0.2 0.3 
Fig. 14: Magnitude of mean gradient vector for frontal zone based on the data of the AVHRR 
sensor on NOAA and METOP 1990 - 2011 and for months