Extreme heat sets records across the northern hemisphere
Is global warming causing extreme weather via jet stream waves?
Guardian 17 July 2014
Big Waves in Jet Stream Mean Extreme Weather
Scientific American, 23 June 2014
The main system that helps determine the weather over Northern Europe and North America may be changing, research suggests.
The study shows that the so-called jet stream has increasingly taken a longer, meandering path.
BBC 15 February 2014
Britannica about the Jet Stream
Väderkartan är konstig (inte som den var förr)
Rolf Englund blog 12 maj 2010