About his logic:
He also assumes that in the phase of doing something when not needed, it will catapult mankind into a great depression. However a side-effect there could be the contrary, since the measures taken tackle with alternative energy and waste management, which are in the long run very healthy for the economy.
His worst case scenario of no action and full MMGW is however not the worst case scenario (the Venus scenario), since he assumes that mankind will survive through some very bad times.
As for Antarctica, the latest news are that there is indeed some big things going on. But it's a heck of a chunk, and things there happen much slower than in the Northern hemisphere.
Now also bear in mind that the sun is now a bit on the cold side. Actually very much so.
Anyway, the IPCC has been forecasting SL rise WITHOUT including the two biggest chunks of Ice, Antarctica and Greenland. Both land-based. Now it turns out that the rise in SL exceeds their predictions 3 times.
"Glaciers can be difficult to use as indicators of change, in part because melt area is not direct a measure of change as the change in mass of glacier, but mass is more difficult to measure. Chenges in mass correspond to accumulation or loss of ice. Nearly all glaciers studied are decreasing in mass, sesulting in rising sea level as the water drains to the ocean. Excluding Antarctica and Greenland, the rate of sea level rise from glacial melt is estimated at 0,58 millimeters fer year from 1961 to 2005, with að higher rate of 0,98 milleters per year between 1993 and 2005. The largest contributors to this rise are glaciers in Alaska and other parts of the Arctic, and the hig mountain of Asia. By 2100, glacial melt may increase sea level further 0,1 to 0,25 meters."
You can also see how careful their prediction is. 0.1 to 0.25....not a lot. But it's a humongous volume in all... Anyway, the result it that one or both of those biggies is responsible for the increase. It's just harder to see.
BTW, the Greenland Glacier had it's fastest retreat in 2007, - the year when some (cough) on these boards claimed to be a record cold one.
Here is something about the reading of data...
http://loftslag.blog.is/blog/loftslag/(scroll down to the Youtube linkie
Now, to the sun:
http://www.youtube.com/watch?v=_Sf_UIQYc20AFAIK our current solar cycle is a long one, it's still cooling after 12 years. No sunspot at the moment.