51 below and sinking

Last night, most on Britain suffered a severe freeze. Nothing unusual about that for the time of the year. Except that, as recently as last week, the Met Office had been warning that we would be suffering one of the wettest Decembers on record and that we should put aside all thoughts of a white Christmas. Now, the nation is shivering with genuine winter cold and some bookies have reduced the odds on snow falling on Christmas day to 5-1. On the other side of the Atlantic, temperatures in states like Minnesota have hit -51C and even Florida sea side resorts, like Pensicola on the northern shore of the Gulf of Mexico, have been hit by sub-zero temperatures.
To be fair to the Met Office boffins, this stream of Arctic air snuck down on them while they were busying themselves preparing their latest sandwich boards predicting the end of the world unless we agree to stop driving, flying, eating meat and eructing. By we, I mean of course, all of the ordinary citizens of the UK whose normal human activities create such huge quantities of C02 and not those politicians and others of blessed fame and fortune who either do not defecate or fart or whose carbon footprint can be offset by the planting of some trees in the Gobi Desert - or who are simply SO important that if they didn't continually fly around the world to desperately important conferences and seminars the globe would stop spinning and topple off its axis.
It doesn't seem to have occurred to them that the blame for this sudden Arctic chill can be laid at the doors of the Copenhagen Conference. The delegates there have, apparently, consumed as much C02 as a small African country simply to get themselves to Denmark and will, presumably, use as much again to get home. More importantly, at the conference itself they have generated so much hot air that it has created a kind of vacuum over the Northern Hemisphere that hoovered the freezing air southwards.