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Methane (CH₄) in 1992 (global mean)
Annual mean1,735.5 ppb
vs previous year+10.5 ppb
Rank of increase10 / 41
Max − min within year10.4 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,738.9 ppb | +17.2 |
| Feb | 1,737.3 ppb | +15.9 |
| Mar | 1,736.8 ppb | +14.7 |
| Apr | 1,736.6 ppb | +14.3 |
| May | 1,735.1 ppb | +13.0 |
| Jun | 1,731.6 ppb | +12.7 |
| Jul | 1,728.8 ppb | +12.9 |
| Aug | 1,730.4 ppb | +11.3 |
| Sep | 1,734.6 ppb | +8.6 |
| Oct | 1,737.7 ppb | +4.9 |
| Nov | 1,739.2 ppb | +1.7 |
| Dec | 1,738.5 ppb | -1.0 |
+12.6 ppb
+10.5 ppb
+11.3 ppb
+9.9 ppb
+10.4 ppb
+10.5 ppb
+1.1 ppb
+5.6 ppb
+6.7 ppb
+2.4 ppb
+3.3 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.