Time series of sensitivity experiments for the bottom layer at four stations. Time series of bottom values at four stations (columns) and five variables (rows) for three experiments: Baseline (black), Freshwater at Ambient Concentrations (FW@AmbientC, red), and High DICobc (gray). Experiments are shown for the first year (spin-up time) so that all simulations start with identical values. The five variables shown are chlorophyll (μg L–1), DIC (μmol kg–1), TA (μmol kg–1), pH (total scale) and ΩA. The FW@AmbientC experiment showed the largest deviations with respect to the Baseline simulation. In the High DICobc experiment, changes in DIC by the end of the first year are approximately half of the changes imposed at the open boundary, and pH changes are even closer (~0.08 vs. 0.1 at the open boundary). DOI: https://doi.org/10.1525/elementa.151.f8