KLIWAS 
Seite 38 
KLIWAS 
Climatology 
of North Sea 
Fronts 
AATSR 
AVHRR 
frontzone magnitude 2003-2010 
total 
AATSR 
MODIS 
AVHRR 
front20rte_magnitude_total 
0025 0 050 0 075 0100 0125 0150 0.175 0 200 0 225 
Fig. 28: Mean of gradient magnitude 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