I don’t think 2 degrees would do that
You know, if the globe gets warmer over time, it is not really a big deal. We all farm canada, instead of texas.
Big deal. South pole become a swamp again, oxygen levels go up.
Sure, Florida goes under water - so what? Dumb place to build, on a sandbar.
On the other hand, let the globe go 3C colder - and most of the human race will die. In fact, it is estimated that less than 10K humand on the planet survived that last time.
Blam?