First of all, apologies for "innacurate" - can't think how that got past the Pedant Patrol.
The ocean current switches have certainly been proposed, and even featured in a disaster movie (The Day After Tomorrow, I think). I don't actually know how much validity the theory has, but I don't think it's significantly sillier than some of the other stuff doing the rounds at the moment.
The point that Coren was trying to make which supports my own point of view was that short-term weather anomalies have nothing whatsoever to do with long term climate change. And it was at one time believed that it was possible that Great Britain would get colder rather than warmer in the event of global warming.
Part of the observable public confusion arises from the fact that trying to identify the current prevailing theory/model is like trying to nail jelly to the wall. Whatever we punters quote can always be ridiculed by a scientist saying we are out of date. Even if you spend all your time with your nose in the learned journals, you aren't going to find out what's "current", because you aren't part of the network.
I take your point about weather not being climate, Jereboim, (although the latter is an aggregate of the former). But what gets me about Coren is that he is clearly an AGW believer. During the latter parts of the 90s and early 00s, we were inundated by stories of "exceptional" temperatures and melting ice caps which spewed forth from believers' mouths. I find it ironic that, now the climate is cooler, they can't take people wondering what happened to all that warming. And yes, Mr Coren, there were plenty of people who said that temperatures would go higher because of CO2. For example, go to the Met Office website and you will see claims (from computer mopdels) that every region of the UK will have significantly higher average temperatures and summer maxima by 2050). Also, there was that chap (again from the Met Office, IIRC) who said, ten years ago, that winter snow would become a very rare event.
The point is that these Islington believers, in words of Corporal Jones, "Don't like it up 'em". Yes, it is amusingly ironic, even if Coren doesn't think so.
Oh, and just to tease you, Jereboim, you said "The ocean current switches have certainly been proposed, and even featured in a disaster movie (
The Day After Tomorrow, I think)". King Kong featured in a disaster movie, but I'm sure not expecting to see a 200ft ape anytime soon.