CorrelateAI › Pairs
Atmospheric Methane (global) vs US Cereal Yield
Atmospheric Methane (global) and US Cereal Yield correlate at r = +0.92 over 41 years (1984–2024), p < 0.0001. With the time trend removed, r = -0.18. 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 -0.18 — the relationship is probably coincidental, not causal.
- Pearson r
- +0.92
- p-value
- < 0.0001
- Years compared (n)
- 41 (1984–2024)
- 95% confidence interval
- 0.85 to 0.96
- Correlation with the time trend removed
- -0.18
Sources
- Atmospheric Methane (global) (ppb): NOAA GML. Global annual mean atmospheric methane from marine surface sites (NOAA GML).
- US Cereal Yield (kg per hectare): World Bank. US Cereal Yield (World Bank indicator AG.YLD.CREL.KG).
Related pairs
- Atmospheric Methane (global) vs US Natural Gas Consumption (r = +0.98)
- Atmospheric Methane (global) vs US GDP per Capita (r = +0.98)
- Atmospheric CO₂ (Mauna Loa) vs US Cereal Yield (r = +0.98)
- Atmospheric CO₂ (Mauna Loa) vs Atmospheric Methane (global) (r = +0.98)
- Atmospheric Methane (global) vs US GDP (current US$) (r = +0.98)
- US Cereal Yield vs US Population (r = +0.97)
Correlation does not imply causation. How the verdict is worked out.