Fig. 14

Appearance rate distributions of a lower salinity (< 33.8; PSS-78) on the 26.7 σθ isopycnal surface and b along the zonal section at 34.0° N. Appearance rate is calculated from the number of appearance days (< 33.8) divided by 365 days using the daily mean data in 2003 of the OFES. Appearance rate of 1.0 means the area where the lower salinity value comes up for 365 days, while 0.0 means that the lower values do not appear