Amazing congratulations on that magnificent article leaving out that we had 4 CMEs overlaying each other hitting the earth directly.[1]
Which wasn't a particularly active day for space weather: https://services.swpc.noaa.gov/text/daily-geomagnetic-indice...
I am not aware of this.
They do warm the earth, but not nearly as much as greenhouse gasses do.
But CMEs actually cool it [1].
1: https://www.colorado.edu/today/2016/12/14/researchers-dial-t...