Atmospheric Concentration of CO2
Source: Source: NASA database (Accessed on 26th December 2020)
Unit: Parts Per Million (ppm)
| Year | CO2 Concentration |
|---|---|
| 1900 | 296 |
| 1910 | 300 |
| 1920 | 303 |
| 1930 | 308 |
| 1940 | 311 |
| 1950 | 311 |
| 1960 | 317 |
| 1970 | 326 |
| 1980 | 339 |
| 1990 | 354 |
| 2000 | 370 |
| 2010 | 389 |
| 2015 | 398 |
| 2019 | 412 |