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New York Average Temperature vs Arctic Sea Ice Extent (September)
New York Average Temperature and Arctic Sea Ice Extent (September) correlate at r = -0.68 over 47 years (1979–2025), p < 0.0001. With the time trend removed, r = -0.38. Holds up after detrending.
Verdict: Holds up after detrending. Statistically significant (p = < 0.0001) and the association survives trend removal (detrended r = -0.38). Correlation still isn't causation, but this one isn't an obvious artifact.
- Pearson r
- -0.68
- p-value
- < 0.0001
- Years compared (n)
- 47 (1979–2025)
- 95% confidence interval
- -0.81 to -0.48
- Correlation with the time trend removed
- -0.38
Sources
- New York Average Temperature (°C): Open-Meteo (ERA5). Annual mean 2m air temperature for New York from the ERA5 reanalysis.
- Arctic Sea Ice Extent (September) (million km²): NSIDC. Mean Arctic sea ice extent in September, the yearly minimum (NSIDC Sea Ice Index).
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)
- Arctic Sea Ice Extent (September) vs US Population (r = -0.90)
- Arctic Sea Ice Extent (September) vs US Marriage Rate (r = +0.90)
- Atmospheric CO₂ (Mauna Loa) vs Arctic Sea Ice Extent (September) (r = -0.89)
Correlation does not imply causation. How the verdict is worked out.