Relationship between calculated and estimated Ω_Arag.

<p>The latter was approximated from measured pH_T and either TA_est (blue points and line, r² = 0.996, y = 0.998x + 0.0271) or a regional average TA (red points and line, r² = 0.996, y = 0.983x-0.0049). See text for details.</p

Upwelling as a driver of total alkalinity at Stearns Wharf.

<p>Total alkalinity (top) shows little connection to upwelling events, though there are occasional spikes in the upwelling index (dotted lines) that co-occur with changes in temperature and salinity.</p

Relationship between salinity and total alkalinity (r² = 0.014, n = 70).

<p>Relationship between salinity and total alkalinity (r² = 0.014, n = 70).</p

Relationship between measured and estimated DIC.

<p>DIC is estimated either from pH_T and TA_est (blue points) or pH_T and regional average TA (red points). The black line denotes the theoretical 1:1 relationship, the blue and red lines the respective correlations with the grey shading marking the 95% intervals. See text for details.</p