My opinion, based on quite a bit of reading. Most persuasively, to me at least, is "Skeptical Environmentalist" Bjorn Lomborg's view:
"Global warming is important, environmentally, politically and economically. There is no doubt that mankind has influenced and is still increasing atmospheric concentrations of CO2 and that this will increase temperature."
http://image.guardian.co.uk/sys-files/Guardian/documents/2001/08/14/warming.pdf
As Lomborg demonstrates, most of the climate model predictions of global warming are computer aided storytelling cooked up in order to alarm the public and policymakers and extract maximum funding and attention. On the other hand, the changes in North Atlantic water temperatures and salinity are a matter of direct observation of the best understood sea system on the planet.
There is cause for watching and planning, but not for panic. Events may well prove fears of a cooling Europe wrong, and I suspect that increasing solar output may be a larger factor in global warming than CO2. If that is true, then even the most stringent CO2 reductions will not stop global warming and other remedies may have to be devised.