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Methane (CH₄) in 2012 (global mean)
Annual mean1,808.1 ppb
vs previous year+5.1 ppb
Rank of increase30 / 41
Max − min within year16.6 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,807.3 ppb | +7.3 |
| Feb | 1,808.2 ppb | +8.3 |
| Mar | 1,810.0 ppb | +9.0 |
| Apr | 1,808.5 ppb | +5.7 |
| May | 1,804.8 ppb | +1.7 |
| Jun | 1,801.0 ppb | +2.0 |
| Jul | 1,799.3 ppb | +3.3 |
| Aug | 1,803.3 ppb | +4.2 |
| Sep | 1,810.1 ppb | +5.9 |
| Oct | 1,814.8 ppb | +5.2 |
| Nov | 1,815.9 ppb | +3.5 |
| Dec | 1,814.6 ppb | +4.5 |
+6.4 ppb
+5.7 ppb
+6.5 ppb
+5.4 ppb
+4.1 ppb
+5.1 ppb
+5.3 ppb
+9.2 ppb
+11.6 ppb
+9.0 ppb
+6.4 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.