Scripps Institution of Oceanography. The Scripps Institution of Oceanography has been tracking the levels of CO2 using the Keeling Curve, created by Charles (Dave) David Keeling.
As of April 2022, the average monthly CO2 concentration in the atmosphere reached a staggering 420.23 parts per million (ppm).
That number is up from 315.00 ppm since the Keeling Curve’s genesis in 1958. But this is not the first time average global CO2 levels reached a record high.