Greenhouse Gas Bulletin

This Bulletin represents the latest analysis of observations from the WMO GAW Programme.

It shows globally averaged surface mole fractions for carbon dioxide (CO₂), methane (CH₄) and nitrous oxide (N₂O) and compares them with the mole fractions during the previous year and with ‌preindustrial levels. It also provides insights into the change in radiative forcing by long-lived GHGs (LLGHGs) and the contribution of individual gases to this increase.