Global greenhouse gas concentrations

CO2 concentration PPM

330 340 350 360 370 380 390 400 410 420 430 1980 Jan 1990 Jan 2000 Jan 2010 Jan 2020 JanCO2CO2 average

CH4 concentration PPB

1600 1650 1700 1750 1800 1850 1900 1950 1980 Jan 1990 Jan 2000 Jan 2010 Jan 2020 JanCH4CH4 average

N2O concentration PPB

300 305 310 315 320 325 330 335 340 1980 Jan 1990 Jan 2000 Jan 2010 Jan 2020 JanN2ON2O average

Source: Carbon Brief