Scientists link frozen spring to dramatic Arctic sea ice loss. ENN 20130328

http://www.enn.com/top_stories/article/45782
"The sea ice is going rapidly. It's 80% less than it was just 30 years ago. There has been a dramatic loss. This is a symptom of global warming and it contributes to enhanced warming of the Arctic," said Jennifer Francis, research professor with the Rutgers Institute of Coastal and Marine Science.
According to Francis and a growing body of other researchers, the Arctic ice loss adds heat to the ocean and atmosphere which shifts the position of the jet stream — the high-altitude river of air that steers storm systems and governs most weather in northern hemisphere.