KLIWAS Seite 29 KLIWAS Climatology of North Sea Fronts MEAN 2003 - 2011 frontzone vector magnitude [K/kml mm o o oo o o oo M CJ1<7> © Brockmann Consult GmbH 2013 K Fig. 19: Magnitude of mean gradient vector for frontal zone based on the data of the MODIS sensor on AQUA 2003 - 2011