Last month’s global average concentration of atmospheric carbon dioxide (CO2) was nearly 412 parts per million (ppm), up…
Last month’s global average concentration of atmospheric carbon dioxide (CO2) was nearly 412 parts per million (ppm), up approximately 24 ppm from October 2009. #2009vs2019 https://t.co/qjYgQZqqbL
— NASA Climate (@NASAClimate) November 19, 2019
(via http://twitter.com/NASAClimate/status/1196920098440675328)