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Global Temperature Anomaly vs US Forest Area
Global Temperature Anomaly and US Forest Area correlate at r = +0.86 over 34 years (1990–2023), p < 0.0001. With the time trend removed, r = -0.22. Likely spurious (shared time trend).
Verdict: Likely spurious (shared time trend). Both series mostly just trend over time. After removing that trend the correlation collapses to -0.22 — the relationship is probably coincidental, not causal.
- Pearson r
- +0.86
- p-value
- < 0.0001
- Years compared (n)
- 34 (1990–2023)
- 95% confidence interval
- 0.74 to 0.93
- Correlation with the time trend removed
- -0.22
Sources
- Global Temperature Anomaly (°C vs 1901–2000): NOAA NCEI. Annual global land and ocean surface temperature departure from the 1901–2000 average (NOAA NCEI).
- US Forest Area (% of land): World Bank. US Forest Area (World Bank indicator AG.LND.FRST.ZS).
Related pairs
- US Forest Area vs US Mobile Subscriptions (r = +0.98)
- US Forest Area vs US Resident Patent Applications (r = +0.97)
- US Adult Obesity vs US Forest Area (r = +0.97)
- Atmospheric CO₂ (Mauna Loa) vs Global Temperature Anomaly (r = +0.97)
- US Forest Area vs US Population (r = +0.97)
- Global Temperature Anomaly vs US GDP per Capita (r = +0.97)
Correlation does not imply causation. How the verdict is worked out.