CO2 concentration at Mauna Loa Observatory 1958-2023 (310ppm-422ppm) Keeling Curve (Scripps Institution of Oceanography)
CO2 concentration from 10,000 years ago to 1958 (265ppm-310ppm) CO2 data from ice cores (Scripps Institution of Oceanography)
1900 - 300ppm (see above)
year | 0 | 200 | 400 | 600 | 800 | 1000 | 1200 | 1400 | 1600 | 1800 | 1900 | 2000 | 2023 |
CO2 | 265 | 265 | 265 | 265 | 270 | 265 | 275 | 265 | 260 | 265 | 300 | 415 | 422 |
NOAA/ESRI graph see full sized