Figure 6. Time series of the volume (104 km3) encompassed by the 28.5°C isotherm a) in April south of 5°N and b) in September north of 5°N. Shown are the departures from the long-term mean of each time series. The ensemble mean (red solid line) is the mean of the R005-R009 simulations. The Ishii time series (black solid line) is the estimate based on the observational product.
Figure 7. First EOF of monthly anomalies of sea surface temperature from CCSM4 for the period 1980-2005. EOFs are plotted for the five ensemble members (R005-R009), and the ERSSTv3b data set. The explained variance is on top of each panel.
Figure 8. Principal component (PC) of 1st EOF from monthly anomalies of sea surface temperature (SST) of the tropical Atlantic (30N-30S). PCs are plotted for the five ensemble members (R005-R009), the ensemble mean, and the ERSSTv3b data set. An 11-month running mean was applied to the time series for display.
Figure 9. Second EOF of monthly anomalies of sea surface temperature from CCSM4 for the period 1980-2005. EOFs are plotted for the five ensemble members (R005-R009), and the ERSSTv3b data set. The explained variance is on top of each panel.
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