1920 · CO₂ and temperature

CO₂ 304.10 ppm · 56.7 °F / 13.7 °C.

Calculated absolute global surface-temperature estimate.

published 20-year ice-core/firn spline

instrumental analysis

calendar year

Annual snapshot at ten-year intervals, not a ten-year mean.

Calculation: source anomaly + the published 14.0 °C reference; °F = °C × 1.8 + 32. Absolute-reference uncertainty is additional to the reconstruction uncertainty.

Sources and Records

1. LAW DOME
2. HADCRUT5
3. Met Office — absolute global annual temperature reference — FAQ: actual temperatures; Jones et al. (1999), 1961–1990 global annual average 14.0 °C

AI generated report by Explorvia.com.