Table 1 Reconstruction Skill metrics for the Southern Annular Mode calculated against instrumental indices over the given time periods

From: Trends and variability in the Southern Annular Mode over the Common Era

Metric

Marshall index

Fogt index

Fogt index

 

(1958-2000)

(1958-2000)

(1866-2000)

Correlation (p 0.001)

0.72

0.67

0.56

RMSE

1.45

1.56

1.80

σ Ratio

0.97

1.03

1.15

Mean Bias

−0.26

0.45

−0.29