Figure 2.

Seasonal variability at each site of: (a–c) sea-surface CO₂ fugacity ($fC{O}_2^{sw}$, dark-blue line with triangles) and difference respect to the atmosphere ($\mathrm{\Delta }fC{O}_2$, light-blue line with circles); (d–f ) total alkalinity (A_T, green line with circles) and dissolved inorganic carbon (DIC, brown line with triangles), both in μmol kg⁻¹; (g–i) salinity (S, psu, magenta line with circles) and temperature (T, Celsius, yellow line with triangles); (j–l) mixed layer depth (MLD, meters) at the mooring locations (fuchsia line with circles) and off-shore (orange line with triangles); (m–o) air-sea CO₂ fluxes (F, black line with circles, negative values indicate fluxes into the sea).