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Carbon dioxide (CO₂) in 1989 (global mean)
Annual mean352.79 ppm
vs previous year+1.63 ppm
Rank of increase32 / 46
Max − min within year4.17 ppm
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 353.01 ppm | +2.10 |
| Feb | 353.46 ppm | +1.99 |
| Mar | 354.01 ppm | +2.16 |
| Apr | 354.38 ppm | +2.09 |
| May | 354.19 ppm | +1.73 |
| Jun | 353.27 ppm | +1.51 |
| Jul | 351.56 ppm | +1.28 |
| Aug | 350.21 ppm | +1.11 |
| Sep | 350.56 ppm | +1.29 |
| Oct | 351.85 ppm | +1.41 |
| Nov | 353.04 ppm | +1.43 |
| Dec | 353.91 ppm | +1.45 |
+1.54 ppm
+1.46 ppm
+1.43 ppm
+1.71 ppm
+2.48 ppm
+1.63 ppm
+1.27 ppm
+1.34 ppm
+0.70 ppm
+0.74 ppm
+1.49 ppm
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.