And that doesn’t account for all the feedback loops within the system e.g., warmer temps melt permafrost, which releases more methane, which warms things further etc etc. so many similar feedback loops. Frightening stuff.
I spent a year in Greenland. There was an A/F base there, Thule, and I was in the Army. It will take a long time for that ice to melt and turn it green again. Where I was stationed at it was ice and snow all summer long. Hell one day the temps even got up to 40 degrees F. And it rained. But at night it got cold and everything froze back up. Shit, that was a long time ago.
The only country that puts more CO2 into the atmosphere than the United States is China. We emit 15% of the world's annual total. We're not the only polluter, but we're one of the biggest and we have the technology to be much better than we are.