KLIWAS 
Seite 20 
KLIWAS 
Climatology 
of North Sea 
Fronts 
2.2 Chlorophyll time series based on the data of the MERIS- 
sensoron ENVKAT 
In case of chlorophyll concentration, the statistical measurements could have only calculated 
both for spring and summer time and for growing season which is here defined as the period 
from March 16 th to October 15 th . The cause of this is to be found in the restrictions of the 
algorithms for deviation of the chlorophyll concentration for MERIS data. 
2.2.1 Time period 2002-2010, growing season 
® Brockmann Consult GmbH 2013 B 
0* 5* E 10* E 
10° E 
CHL 
mean 
MERIS 
MEAN 2002 - 2010 
growing season 
chl_mean [log 10 (iOOO*CHL/[mgm- } ])] 
mmmio Mio CO CO CO 
oj-ucncn ro . v 
OIUI Oltn o ro 
Fig. 11: Mean chlorophyll field based on the data of the MERIS sensor on ENVISAT 2002 - 2010