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Methane (CH₄) in 2017 (global mean)
Annual mean1,849.7 ppb
vs previous year+6.4 ppb
Rank of increase24 / 41
Max − min within year18.4 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,849.8 ppb | +7.3 |
| Feb | 1,848.6 ppb | +6.8 |
| Mar | 1,848.3 ppb | +5.2 |
| Apr | 1,848.6 ppb | +4.8 |
| May | 1,847.2 ppb | +5.1 |
| Jun | 1,842.9 ppb | +5.0 |
| Jul | 1,840.2 ppb | +6.0 |
| Aug | 1,844.6 ppb | +7.8 |
| Sep | 1,852.8 ppb | +8.4 |
| Oct | 1,858.0 ppb | +8.1 |
| Nov | 1,858.6 ppb | +7.1 |
| Dec | 1,856.6 ppb | +5.5 |
+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
+16.0 ppb
+16.2 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.