Is there a way to change the final value to CO2e, in ppm?

And a way to compare the sum of them with what we have, by example, versus 1980?

Here you go, Juan:

I converted the radiative forcing back into CO

_{2} equivalents. Please find the values for each January of the following years. Please also keep in mind that these numbers only represent the four "NOAA gases" CO

_{2}, CH

_{4}, N

_{2}O and SF

_{6}. Therefore the "true" value is higher than that.

Jan 1980 372.2 ppm

Jan 1990 394.8 ppm (+22.6 ppm or +6.1%)

Jan 2000 415.7 ppm (+20.9 ppm or +5.3%)

Jan 2010 440.4 ppm (+24.7 ppm or +5.9%)

Jan 2020 473.4 ppm (+33.0 ppm or +7.5%)

The latest value (June 2020) represents a CO

_{2} equivalent of 477.1 ppm (annual increase of 3.6 ppm). I will report this equivalent in future, once a month, when NOAA adds the latest monthly averages to its website.

It is obvious that we are on an exponential track. The smaller increase during the 1990s is a consequence of the breakdown of the Soviet Union's and its allies' economy after the revolutions of 1989/90.