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Methane (CH₄) in 1986 (global mean)
Annual mean1,670.2 ppb
vs previous year+12.8 ppb
Rank of increase3 / 41
Max − min within year16.8 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,666.3 ppb | +10.6 |
| Feb | 1,666.9 ppb | +14.6 |
| Mar | 1,669.3 ppb | +14.6 |
| Apr | 1,670.8 ppb | +12.6 |
| May | 1,668.5 ppb | +12.6 |
| Jun | 1,664.8 ppb | +14.7 |
| Jul | 1,662.3 ppb | +15.5 |
| Aug | 1,664.4 ppb | +12.1 |
| Sep | 1,672.6 ppb | +10.1 |
| Oct | 1,678.7 ppb | +11.2 |
| Nov | 1,679.0 ppb | +12.2 |
| Dec | 1,679.1 ppb | +13.1 |
+12.4 ppb
+12.8 ppb
+12.6 ppb
+10.5 ppb
+11.3 ppb
+9.9 ppb
+10.4 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.