TLDR: 3 reasons. First the quickest warming is actually the poles (technically the south pole) which means the North pole cools Europe less. Europe's reduction in CO2 and other pollutants output, cause both more sunlight to hit the ground in Europe and make the likelihood of big airflows coming from the South (ie. Sahara) larger.

And yeah, my read is that this is more arguments in favor of: it doesn't matter which way CO2 evolves, we'll need to take control over the climate if we want cities to remain where they are.