For starters, kudos for flagging some decent references (not necessarily Wikipedia itself, but the links there are generally good ones).

I don't think anybody's going to get bent too far out of shape by a sea rise of two centimeters in ten years, or about 8 inches in a century (the pattern since 1900). Notice that the curve of rising sea levels is amazingly straight. I suspect a curve of carbons burned during that century would look like a ski slope. Interesting.

Even 340 mm by 2100 (worst case described) is only about a foot (the numbers sound so BIG in millimeters, don't they?)

That Gore's drowned cities scenarios are utter crap goes without saying.