14,000 years ago, all of Canada was under mountains of snow.
Whos to say, if we throw the balance of the world out of order, something like that doesnt happend again?
Water covers around 2/3rds of the earths surface.
Large amounts of Heat distribution around the world, are impacted by ocean currents.
If our climate change effects things like the ocean currents (even to small degrees), it could effect such things as how hot or cold certain area's are.
So while europe is getting "hotter" it might be because less heat, is being moved to area's such as canada, which would then get colder.
Which might be a good thing, instead of all the snow/ice of say greenland just melting and riseing sea levels.
Maybe some of it can "build up" in canada, that way we dont just all drown, due to sea level rises :p
For that the snow needs to stay though. However the great lakes have been at record high water levels the last few years. More rain / snow, higher water levels, so yep we're doing our part to slow down sea levels rising :)