Extended Data Fig. 6: Rossby wave feedback. | Nature Geoscience

Extended Data Fig. 6: Rossby wave feedback.

From: Weakening of the Atlantic Meridional Overturning Circulation driven by subarctic freshening since the mid-twentieth century

Extended Data Fig. 6

a SSTSPG index and b Gulf Stream transport anomaly in idealized freshwater perturbation experiments. Solid lines indicate 4-member ensemble mean in ESM-fw and dashed lines indicate the single OM-fw simulation. Banding indicates 4-member ensemble range for ESM-fw and one standard deviation range of the control run for OM-fw. c Detrended time series of the Gulf Stream and SSTSPG obtained through removing their respective 7-years running average. Time series were smoothed by a 5-years running average. d Hovmoeller plot (longitude vs time in model years) of mixed layer depth anomalies averaged between 20°N-30°N in the North Atlantic. Zonal green line indicates the speed of the first-mode baroclinic Rossby wave in the North between 20°N-30°N. Vertical green line indicates the approximate length of the Rossby feedback.

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