"Climate scientists broadly agree that the extreme weather we’ve seen over the past few years is exactly what we’d expect to see in a changing climate. And it’s not just Sandy; we’re on track to have the hottest year in more than a century of record-keeping in the continental United States."
1. Back in Sept. as the arctic sea ice low for the year was passing Scientists in the UK raised concern
about how this years unprecedented area of open sea could lead to bad fall and winter weather in the British Isles...
Well, the mechanism they talked about was shifts in the jet stream that could increase 'BLOCKS' that would interrupt the normal west to east progression of storm systems.
Sandy was prevented from moving eastward and out to sea by just such a block.
So the question becomes one of linkage across several phenomena all the way back to the unprecedented melting of the ice in the Siberian Sea this summer.
The events in the arctic most certainly created yet another in a series of anomolous low area of sea ice coverage compared to the historic record. That's a trend. Trends in weather over decades must be considered--CLIMATE CHANGE.