Fig. 6: Influence of equatorial Atlantic mean upwelling bias on the simulated inter-basin decadal connection.
From: Synchronous decadal climate variability in the tropical Central Pacific and tropical South Atlantic
Ensemble the mean of the anomalous SST (shading, unit: K) response in the Pacific pacemaker experiment during the b MAM and b JJA seasons. The green dashed lines in (a, b) enclose the region of no active air–sea coupling with a mask value of zero while the black dashed box encloses the equatorial Atlantic region (50° W–10° E, 5° S–5° N). Stippled shading indicates values exceeding the 90% confidence level based on a two-tailed Student’s t-test. Meridionally averaged equatorial (5° S–5° N) Atlantic vertical velocity (shading, unit: 10−6 m s−1) and ocean temperature (contours, unit: K) climatology from the last 50 years of simulation of the Pacific-driven control experiment using the CM2.1 model during the c MAM and d JJA seasons. e, f as (c, d) but using the GECCO3 reanalysis data from 1951 to 2018. The thermocline represented by the 20 °C isotherm line is thickened in (c–f).
