The KLIWAS Climatology for Sea Surface Temperature and Ocean Colour Fronts In the North Sea List of figures 12 1 IMPACT OF CLIMATE CHANGE ON FRONTS AND ECOSYSTEMS 15 2 FLOWCHART OF FRONT DETECTION ALGORITHM 16 3 SST FIELD AND SST FRONTAL ZONES IN THE NORTHERN PART OF THE NORTH SEA 17 4 SST FIELD AND SST FRONTAL ZONES IN THE NORTHERN PART OF THE NORTH SEA 21 5 LAND WATER MASK OF THE NORTH SEA 22 6 BATHYMETRY OF THE NORTH SEA 24 7 DISTRIBUTION OF THE SST FRONT GRADIENT VECTORS AND HISTOGRAM OF THE DIRECTION OF THE SST FRONT GRADIENT VECTORS 27 8 FREQUENCY OF GEOSTROPHIC EAST (RED) AND WEST (BLUE) WINDS OVER THE NORTH SEA 27 9 RELATIVE MONTHLY FREQUENCY OF GEOSTROPHIC EAST (RED) AND WEST (RED) WINDS WIND DIRECTION 28 10 DISTRIBUTION OF ALL GEOSTROPHIC WIND DIRECTIONS OVER THE NORTH SEA 28 11 MONTHLY FREQUENCY OF THE AVHHR PRODUCTS SHOWN IN FIG. 12 29 12 DIFFERENT FRONT PRODUCTS BASED ON THE DATA OF THE AVHRR SENSOR ON NOAA AND METOP 30 13 SIGN AND SIGNIFICANCE OF TRENDS OF YEARLY WIND DIRECTION FREQUENCIES List of tables 1 DATA SETS INCLUDED INTO THE CLIMATOLOGY 2 18 25 VALUES SUPPLIED FOR THE STATISTICAL SST/OC FRONT PRODUCT