A moderately strong (n = 214, r = 0.40) and statistically significant (p < 0.001) relationship was found at monthly resolution between the modern δ 18 O sw record and the SODA salinity **data** (Figure 6a). The monthly δ 18 O sw record was also significantly correlated (n = 214, r = 0.39, p < 0.001) with log-transformed Tully