USA/Another winter storm is brewing in Middle America. So what else is new?

It’s been one spate of severe weather after another even before 2011 began. And you would expect those skeptical of climate change to capitalize on the cold snap by questioning whether human-spurred global warming is a real deal.

Strangely enough, climate skeptics appear to be less vocal than they were last year, when Republican Sen. James Inhofe of Oklahoma built an igloo as a blizzard blew through Washington DC, and dubbed it “Al Gore’s new home.” If it’s so cold, the argument went, how can there be global warming?

Gore himself offered an answer last week, in a blog post meant to respond to just such a question from Fox News’s Bill O’Reilly.

“In fact, scientists have been warning for at least two decades that global warming could make snowstorms more severe,” Gore wrote. “Snow has two simple ingredients: cold and moisture. Warmer air collects moisture like a sponge until it hits a patch of cold air. When temperatures dip below freezing, a lot of moisture creates a lot of snow.”

All the numbers indicate the planet as a whole is warming, which means climate change is already under way. But climate skeptics remain unpersuaded.