Fig. 4. Eddy stratification in the five subtropical gyres.

(A to E) Median squared buoyancy frequency N2 from Argo floats in ACEs (red) and CEs (blue) during summer (dotted lines) and during winter (solid lines).

(A to E) Median squared buoyancy frequency N2 from Argo floats in ACEs (red) and CEs (blue) during summer (dotted lines) and during winter (solid lines).