Fig. 5
GS13 δ18O, Labrador Sea, Denmark Strait temperatures and salinities. (A) As in Figs. 2–4. (B) 1- and 5-yr smoothed GS13 δ18O (blue lines) and Central Labrador Sea instrumental SSS from the compilation of Reverdin et al.48 (red line) and Labrador Sea SSS as simulated in response to “Greenland/Arctic” atmospheric blocking from Ionita et al.60 (brown lines). (C) GS13 δ18O (as in B) along with annual mean potential temperature of Denmark Strait overflow waters since 1949 AD after Eldevik et al.43. Open circles denote missing years in the instrumental record. Blue horizontal bars indicate the timing of the Great Salinity Anomalies after Belkin45. Red/white transition in background color indicates the start of pronounced instability in hydrographic characteristics of Nordic Seas inflow waters.
