Table 2. Correlation coefficients of monthly AMO index and six tree-ring chronologies (1856–2007).
AMO | PC1 | Taksimo | Tschita | Mangui | Khotugn | Mengkeshan | Zhigansk |
Average | 0.37 | 0.27 | 0.34 | 0.42 | 0.17 | 0.19 | 0.08 |
Jan | 0.30 | 0.24 | 0.25 | 0.34 | 0.15 | 0.21 | 0.07 |
Feb | 0.27 | 0.19 | 0.26 | 0.32 | 0.11 | 0.18 | 0.05 |
Mar | 0.24 | 0.18 | 0.24 | 0.27 | 0.10 | 0.11 | 0.03 |
Apr | 0.32 | 0.23 | 0.32 | 0.32 | 0.15 | 0.11 | 0.04 |
May | 0.28 | 0.22 | 0.24 | 0.32 | 0.11 | 0.09 | 0.06 |
Jun | 0.30 | 0.19 | 0.26 | 0.32 | 0.17 | 0.13 | 0.10 |
Jul | 0.36 | 0.24 | 0.31 | 0.38 | 0.21 | 0.19 | 0.17 |
Aug | 0.36 | 0.24 | 0.33 | 0.37 | 0.22 | 0.16 | 0.17 |
Sep | 0.37 | 0.26 | 0.34 | 0.41 | 0.19 | 0.19 | 0.12 |
Oct | 0.33 | 0.28 | 0.34 | 0.43 | 0.07 | 0.24 | 0.06 |
Nov | 0.34 | 0.28 | 0.32 | 0.45 | 0.12 | 0.24 | 0.02 |
Dec | 0.34 | 0.31 | 0.31 | 0.42 | 0.10 | 0.20 | 0.03 |
Notes: Bolded values for significance at the 95% confidence level as tested by Pearson correlation.