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Methane (CH₄) in 2014 (global mean)
Annual mean1,822.7 ppb
vs previous year+9.2 ppb
Rank of increase15 / 41
Max − min within year17.7 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,816.8 ppb | +2.8 |
| Feb | 1,816.5 ppb | +2.3 |
| Mar | 1,818.2 ppb | +5.0 |
| Apr | 1,820.9 ppb | +8.0 |
| May | 1,821.9 ppb | +10.0 |
| Jun | 1,818.4 ppb | +9.9 |
| Jul | 1,815.7 ppb | +9.8 |
| Aug | 1,819.9 ppb | +11.3 |
| Sep | 1,826.8 ppb | +12.6 |
| Oct | 1,831.1 ppb | +12.6 |
| Nov | 1,832.9 ppb | +12.5 |
| Dec | 1,833.4 ppb | +14.1 |
+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
+7.8 ppb
+9.2 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.