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Carbon dioxide (CO₂) in 1979 (global mean)
Annual mean336.85 ppm
vs previous year–
Rank of increase–
Max − min within year3.96 ppm
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 336.56 ppm | – |
| Feb | 337.29 ppm | – |
| Mar | 337.88 ppm | – |
| Apr | 338.32 ppm | – |
| May | 338.26 ppm | – |
| Jun | 337.38 ppm | – |
| Jul | 335.56 ppm | – |
| Aug | 334.36 ppm | – |
| Sep | 335.02 ppm | – |
| Oct | 336.36 ppm | – |
| Nov | 337.36 ppm | – |
| Dec | 337.89 ppm | – |
+2.06 ppm
+1.19 ppm
+0.75 ppm
+1.67 ppm
+1.54 ppm
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.