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Carbon dioxide (CO₂) in 1985 (global mean)
Annual mean345.54 ppm
vs previous year+1.46 ppm
Rank of increase37 / 46
Max − min within year3.57 ppm
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 345.35 ppm | +1.03 |
| Feb | 345.80 ppm | +0.98 |
| Mar | 346.64 ppm | +1.68 |
| Apr | 346.94 ppm | +1.75 |
| May | 346.78 ppm | +1.45 |
| Jun | 346.26 ppm | +1.69 |
| Jul | 344.92 ppm | +1.72 |
| Aug | 343.41 ppm | +1.20 |
| Sep | 343.37 ppm | +1.24 |
| Oct | 344.64 ppm | +1.65 |
| Nov | 345.79 ppm | +1.63 |
| Dec | 346.55 ppm | +1.55 |
+2.06 ppm
+1.19 ppm
+0.75 ppm
+1.67 ppm
+1.54 ppm
+1.46 ppm
+1.43 ppm
+1.71 ppm
+2.48 ppm
+1.63 ppm
+1.27 ppm
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.