Figure 3.

(a) Average Seasonal Cycles of Warm and Cold Core Ring formation between ${75}^{\circ }\text{W}$ and ${55}^{\circ }\text{W}$ from 1980 to 2019, error bars represent standard error from the mean. Shaded regions under the curve represent the difference between Warm and Cold Cord Ring rates of formation, emphasizing the shift from more Cold Core Rings forming during January through June to more Warm Core Rings forming during July through December. (b) The difference in ring formation numbers of Warm and Cold Core Rings (black line) and the monthly temperature difference (purple dashed line) between Sargasso and Slope waters from their respective monthly climatology shown in the bottom (c).