Mailbox in Arlington, VA near Washington DC after 24 inches of snow, Feb. 6, 2010. Photo by Dennis Dimick/flickr.
Christopher Joyce: "...Most don't see a contradiction between a warming world and lots of snow. That includes Kevin Trenberth, a prominent climate scientist at the National Center for Atmospheric Research in Colorado.
"The fact that the oceans are warmer now than they were, say, 30 years ago means there's about on average 4 percent more water vapor lurking around over the oceans than there was, say, in the 1970s," he says.
"Warmer water means more water vapor rises up into the air, and what goes up must come down.
"So one of the consequences of a warming ocean near a coastline like the East Coast and Washington, D.C., for instance, is that you can get dumped on with more snow partly as a consequence of global warming," he says.
"And Trenberth notes that you don't need very cold temperatures to get big snow. In fact, when the mercury drops too low, it may be too cold to snow...."
=
Posted via email from Signs From Earth Notes