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The black solid line is the 13-year centered moving average atmospheric temperature (°C) from Fig 3 (truncated at 2007 because of the 13-year moving average). The red solid line is calculated by combining the monotonic and oscillatory (AMO) modes. The slope of the monotonic mode is 0.0089 K yr-1 and the amplitude of the oscillatory mode (AMO) is 0.75 K. The correlation between the measured and calculated curves is 0.98.
