You said — “Fill a glass nearly full with water. Add enough ice cubes to float above the lip of the glass. Leave it out and watch to see if it overflows the glass when it melts.”
Ummm..., while I do not agree with Anthropogenic Global Warming (AGW), one must be careful when stating facts to argue against it.
In this case, you’ve stated something wrong, which doesn’t help the credibility of the case against AGW. What you’ve said is true with ice that is built up in water (i.e., the oceans). If it melts, the oceans don’t gain in height (as in your example of the water glass with ice in it).
BUT, in this particular article, we’re not talking about a mass of ice that is submerged and floating in the water. Here in this article, it’s on land (it’s not like the Arctic, which is “sea ice”. This is “land ice”.
And — in that case — it *would raise sea level* — without a doubt. This is certain.
So, what you say is true with Arctic ice (already on water), but it is not true with Antarctic ice (the part which is over land).
Here’s a map of the geography of Antarctica...
http://upload.wikimedia.org/wikipedia/commons/b/b7/AntarcticBedrock.jpg
Yes, I have already been whipped and run into the night with my tail between my legs. Thank you.
