KLIWAS 
Seite 29 
a 
b 
NORTH wind 
sst mean 
sst mean 
WEST WIND 
sst mean 
EAST WIND 
sst mean 
- 3285 
- 3283 
NORTH wind 
zone probability 
SOUTH WIND 
probability 
WEST WIND 
zone probability 
0.23 
0.1/ 
EAST WIND 
zone probability 
0.06 
{3 0.41 
KLIWAS 
Climatology 
of North Sea 
Fronts 
c 
d 
'ff NORTH wind 
front zone 
* magni tute total 
/ SOUTH WIND 
front zone 
* magnitute total 
WEST WIND 
L front zone 
& magnitute total 
NORTH wind 
front zone 
** vector magnitude 
/ SOUTH WIND 
% front zone 
vector magnitude 
Who I WIND 
front zone 
vector magnitude 
e 
South 
North 
y'north 
y WEST wind 
y front zone 
* vector direction 
SOUTH 
' front zone 
vector direction 
' front zone 
vector direction 
front zone 
vector direction 
Fig. 12: Different front products based on the data of the AVHRR sensor on NOAA and MetOp 
from 1990-2011 for geostrophic wind from the north, south, west and east: 
a: mean SST distribution, b: SST front probability, c: mean of gradient magnitude for SST 
frontal zone, d: magnitude of mean SST front gradient vector, and e: direction of mean SST 
front gradient vector.