KLIWAS 
Seite 40 
KLIWAS 
Climatology 
of North Sea 
Fronts 
AATSR 
AVHRR 
frontzone_vector 2003-2010 
dirtection 
frontzone _wector_drection 
Fig. 30: Direction of mean gradient vector for frontal zone based on the data of the AATSR 
sensor on ENVISAT, MODIS sensor on AQUA, of the AVHRR sensor on NOAA and METOP 
2003 - 2010