The Bad Astronomer is happy to go on and on about melting Arctic ice, but when it comes to supporting his claim that it’s increasing sea level, we get crickets.
Plait’s Slate.com column “The Arctic Ice ‘Death Spiral’” offers this penultimate paragraph, presented with Plait’s links:
And, no doubt, the deniers will make lots of noise about this, calling me an alarmist and pointing to ever more cherry-picked data and misleadingly plotted numbers. But the fact is the Earth is warming up. That’s melting the ice at both poles, increasing sea levels. We’re still dumping gigatons of carbon dioxide in the air every year, and the amount increases at a steady and measurable level. That CO2 is warming us up.
Note that Plait offers no link (i.e., support) for his money line about the effect of Arctic ice melting — i.e., “increasing sea levels.”