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Arctic Sea Ice Extent (September) vs US Exports
Arctic Sea Ice Extent (September) and US Exports correlate at r = -0.75 over 46 years (1979–2024), p < 0.0001. With the time trend removed, r = -0.24. 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 -0.24 — the relationship is probably coincidental, not causal.
- Pearson r
- -0.75
- p-value
- < 0.0001
- Years compared (n)
- 46 (1979–2024)
- 95% confidence interval
- -0.85 to -0.58
- Correlation with the time trend removed
- -0.24
Sources
- Arctic Sea Ice Extent (September) (million km²): NSIDC. Mean Arctic sea ice extent in September, the yearly minimum (NSIDC Sea Ice Index).
- US Exports (% of GDP): World Bank. US Exports (World Bank indicator NE.EXP.GNFS.ZS).
Related pairs
- Arctic Sea Ice Extent (September) vs US Mobile Subscriptions (r = -0.92)
- Arctic Sea Ice Extent (September) vs US Resident Patent Applications (r = -0.91)
- Arctic Sea Ice Extent (September) vs US Adult Obesity (r = -0.91)
- US Exports vs US Imports (r = +0.90)
- Arctic Sea Ice Extent (September) vs US Population (r = -0.90)
- Arctic Sea Ice Extent (September) vs US Marriage Rate (r = +0.90)
Correlation does not imply causation. How the verdict is worked out.