The 12 month rate of change in CO2CO2 Carbon dioxide (chemical formula CO2) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. levels from the Mauna Loa volcano in Hawaii continues to fall from 3 ppmppm Parts Per Million per year in 2019, to close to 2 ppm per year in October 2022. It’s the only way you can detect if something underlying is going on with CO2, because a plot of monthly values is relentlessly increasing by 24.8 ppm per decade, if you believe the simple linear trend.
