Figure 9 . Spatial distribution of isopycnal diffusivity for CDW. Upper and lower panels are based on spiciness and thickness, respectively. In addition to SB (red) and isobaths, dynamic topography is overlaid by 2 cm intervals (white contours). Characteristic contours of dynamic topography are highlighted in blue (thick: subpolar gyre as –1.97 m, thin: SACCF-S as –1.85 m).