Fig. 5: Cross-correlation coefficients and ACC along the Atlantic water pathway.
From: North Atlantic subpolar gyre provides downstream ocean predictability
Cross-correlation between the SPG index and subsurface salinity along the Atlantic water pathway (green boxes in Fig. 3a) from (a) ASSIM and (b) hindcast. The x-axis in (b) denotes the lag years for cross-correlation (salinity lags the SPG) and the hindcast lead years for salinity. c ACC for salinity at different hindcast lead years. d–f As in (a)–(c), but for temperature. Stippling in (a), (b), (d) and (e) denotes 90% confidence level based on Student’s t test. Stippling in (c) and (f) denotes 95% confidence level based on block bootstrapping. The black arrows in (b), (c), (e), (f) highlight the lag (lead) years 4.
