Peter Gibbs explains sudden stratospheric warming and why it's often linked to outbreaks of cold weather.
A snowy chill has arrived across the UK, with all the fun and chaos which that entails. Many of us are being impacted by the wintry weather this week, a shock for many after such a benign start to the season.
Yet the beginnings of this change in the weather can be traced back to strange goings-on, miles above us in the atmosphere, many days ago .... http://www.bbc.co.uk
