CorrelateAI › Pairs
Arctic Sea Ice Extent (September) vs US Forest Area
Arctic Sea Ice Extent (September) and US Forest Area correlate at r = -0.88 over 34 years (1990–2023), p < 0.0001. With the time trend removed, r = -0.49. Holds up after detrending.
Verdict: Holds up after detrending. Statistically significant (p = < 0.0001) and the association survives trend removal (detrended r = -0.49). Correlation still isn't causation, but this one isn't an obvious artifact.
- Pearson r
- -0.88
- p-value
- < 0.0001
- Years compared (n)
- 34 (1990–2023)
- 95% confidence interval
- -0.94 to -0.77
- Correlation with the time trend removed
- -0.49
Sources
- Arctic Sea Ice Extent (September) (million km²): NSIDC. Mean Arctic sea ice extent in September, the yearly minimum (NSIDC Sea Ice Index).
- 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)
- US Forest Area vs US Population (r = +0.97)
- Atmospheric CO₂ (Mauna Loa) vs US Forest Area (r = +0.95)
- US Adolescent Birth Rate vs US Forest Area (r = -0.94)
Correlation does not imply causation. How the verdict is worked out.