luminouscuboids

CO₂

417.31 ppm

C. van Gog, 22 April 2022

Pre-industrial levels were about 278 ppm CO₂. In the subtitles of Cuboids, I keep track of de-seasonalized Mauna Loa ppm CO₂ concentrations on the WMO X2019 scale. For sources and methodology, see https://gml.noaa.gov/ccgg/trends/data.html.