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Nitrous oxide (N₂O) in 2008 (global mean)
Annual mean321.51 ppb
vs previous year+1.06 ppb
Rank of increase9 / 24
Max − min within year0.64 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 321.33 ppb | +0.97 |
| Feb | 321.39 ppb | +1.01 |
| Mar | 321.38 ppb | +1.10 |
| Apr | 321.39 ppb | +1.20 |
| May | 321.43 ppb | +1.21 |
| Jun | 321.46 ppb | +1.21 |
| Jul | 321.43 ppb | +1.25 |
| Aug | 321.40 ppb | +1.17 |
| Sep | 321.49 ppb | +1.03 |
| Oct | 321.65 ppb | +0.91 |
| Nov | 321.80 ppb | +0.84 |
| Dec | 321.97 ppb | +0.81 |
+0.69 ppb
+0.63 ppb
+0.66 ppb
+0.91 ppb
+0.62 ppb
+1.06 ppb
+0.77 ppb
+0.91 ppb
+1.02 ppb
+0.84 ppb
+0.89 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.