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CO₂ Concentration

Global Monthly CO₂ concentration in ppm
Data source:
Historical Greenhouse Gas Concentrations for CMIP6 (Version 1 July 2016)

See the full list of spiral variants - Background, Videos, and GIFs
Original Climate Spiral by Ed Hawkins (Climate Lab Book),
extended with Carbon Budget and Concentration Spiral by
Robert Gieseke and Malte Meinshausen
(PRIMAP Group, Potsdam Institute for Climate Impact Research, Germany &
Australian-German Climate & Energy College, The University of Melbourne, Australia)
Data Processing · Source Code