Winning the award, by a mile, for the stupidest "Climate Change Claim" I've ever heard has to be "All of this cold is due to Global Warming." Now, for those who follow the AGW craze, you already know that warm ocean currents control our climate. This is nothing new. Al Gore and his minions have all claimed that we've been warming the oceans, melting the ice caps, and causing unusually-severe weather world-wide.
Only we haven't. Yes, the El Nino/La Nina swings from warm to cool in the Pacific do drive changes in the Jet Stream, but it has always done this, and likely always will. Just because we've recently learned about a process doesn't mean it hasn't been doing it for years. But, according to AGW scientists, apparently THIS winter's Modiki (Japanese for "different") El Nino is not in the same location as past El Nino's were. So the Jet Stream has changed position wildly, bringing stinging cold and snowstorms to the US.
The AGW nuts are chanting "See, we told you so!" They're claiming "extreme weather" because, lately, there just hasn't been much of that. No crazy Category 6 hurricanes. No "Night of the Twister" tornado outbreaks. Just lots of cold air blowing down from the northlands. They're claiming this "cold" is because we're just "too hot".
I have observed, in my life, that it is the Sun which warms us. No Sun, no warmth. Now, if the Sun happens to be doing something funky (and it is at the moment, with the lowest solar output since we've been monitoring it) it would be prudent to perhaps examine the relationship between the Sun and the warmth on this planet.
Naw, that would just be too easy.
Here's my theory... As the Sun's output (and solar wind) has dropped, the upper atmosphere has contracted significantly. It's gone from 400 miles deep down to about 250 or so. Don't quote me on the exact figures. Sure the Sun's output has gone lower, but now the light has less depth to bounce through, and diffracts less, possibly warming the mid-latitude oceans more. Translation? Hot summers still, and freaky winter weather caused by the length of time it takes the ocean to cool back down as winter comes on. The El Nino pools cause the jet stream to go crazy, and it's the Jet Stream's path which scooped up the cold and brought it south. The Pacific is in a cool PDO (look it up) phase, as is the Atlantic's AMO too. This, if the sun continues to heat the oceans in the same way next year, could lead to a repeat of this year's winter.
And a general cooling trend for the planet overall. Hey, I didn't say it was a great theory, but it's miles better than saying "AGW causes harsh winters"!