As 100+ temperatures in the Artic melt the perma frost Methane is released which is 10 times the green house gas than CO2. Add the 100,000 fracking wells releasing methane, the runaway effect has come 100 years early.
https://www.cbsnews.com/news/arctic-temperature-record-100-4-degrees-earth-warmest-12000-years/#:~:text=Bird%20Carrying%20Fish-,