Figure 6.

Ventilation effects on the subsurface ∆PCO₂ structure. (a–c) Influence of anthropogenic carbon uptake ($∆{\mathrm{P}\mathrm{C}\mathrm{O}}_2^{\mathrm{c}\mathrm{a}\mathrm{n}\mathrm{t}}$). (d–f) Influence of air‐sea gas exchange due to equilibration and other residual effects ($∆{\mathrm{P}\mathrm{C}\mathrm{O}}_2^{\mathrm{r}\mathrm{e}\mathrm{s}}$). Panels show the Atlantic (left), Indian (middle), and Pacific (right) sectors of the Southern Ocean. Isoneutral surfaces are shown in black, and the 0 μatm ∆PCO₂ isoline in orange.