Massive complexity in global climatic systems and human caused change defy simple explanation. This is why it is important to educate people regarding the fact that climate change will have different impacts in different regions. It is entirely possible if not likely that as average global temperatures increase, climatic sub-systems will change their processes and rates in ways that dramatically impact a particular region - either making it more cold, hotter, drier, wetter, etc. There is no contradiction in the fact that climate change may well chill Europe while greening the Arctic. Indeed, the speed and degree to which climate may oscillate has potentially catestrophic implications.

The Daily Telegraph | Global warming to chill Europe

WESTERN Europe may actually get colder as a result of global warming, because the melting Arctic ice cap is cooling off the warm ocean current that is largely responsible for Europe's mild weather