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Methane (CH₄) in 2015 (global mean)
Annual mean1,834.3 ppb
vs previous year+11.6 ppb
Rank of increase7 / 41
Max − min within year20.2 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,833.1 ppb | +16.3 |
| Feb | 1,833.0 ppb | +16.5 |
| Mar | 1,833.2 ppb | +15.0 |
| Apr | 1,833.2 ppb | +12.3 |
| May | 1,831.5 ppb | +9.6 |
| Jun | 1,827.1 ppb | +8.7 |
| Jul | 1,824.6 ppb | +8.8 |
| Aug | 1,829.0 ppb | +9.1 |
| Sep | 1,836.2 ppb | +9.4 |
| Oct | 1,841.5 ppb | +10.3 |
| Nov | 1,844.6 ppb | +11.7 |
| Dec | 1,844.7 ppb | +11.3 |
+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
+12.2 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.