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Summary of correlations between circulation indices and the end of the TGS (C – Central, E – East, N – North, S – South, W – West)_
| Index | The lowest value of the correlation coefficient | The highest value of the correlation coefficient | Mean correlation | % of area with statistically significant correlation (p < 0.05) | Dominant sign of correlation | Main regions of strongest correlation |
|---|---|---|---|---|---|---|
| East Atlantic | –0.66 | 0.65 | ~0.00 | 33 | Mixed | +N Scandinavia, N Germany; –Estonia, C Finland |
| North Atlantic Oscillation | –0.34 | 0.49 | 0.02 | 6 | Mainly positive (weak) | +Denmark, N Germany, S Sweden; –Belarus, NE Europe |
| Scandinavia | –0.43 | 0.40 | 0.03 | 14 | Mainly negative | +Hungary, Denmark, C Germany; –Finland, N Russia |
| East Atlantic/Western Russia | –0.54 | 0.45 | ~0.00 | 13 | +C Poland, NE Europe; –N Norway, W part of study area |
Summary of correlations between circulation indices and the start of the thermal growing season (C – Central, E – East, N – North, S – South, W – West)_
| Index | Lowest value of correlation coefficients | The highest value of the correlation coefficients | Mean correlation | % of area with statistically significant correlation (p < 0.05) | Dominant sign of correlation | Main regions of strongest correlation |
|---|---|---|---|---|---|---|
| East Atlantic | –0.54 | 0.55 | 0.03 | 31 | Mixed | +C Sweden, N Russia; –Denmark, N Germany |
| North Atlantic Oscillation | –0.64 | 0.60 | ~0.00 | 40 | Negative | +C Sweden; –W part of the study area, Norway |
| Scandinavia | –0.50 | 0.48 | ~0.00 | 23 | Positive | +W part of the study area, N Scandinavia; –Finland, Russia |
| East Atlantic/Western Russia | –0.37 | 0.42 | ~0.00 | 5 | Weak/mixed | +C Finland; –N Norway |