Why its cold here but warm over Greenland: Diverted jet stream letting icy blast in from the Arctic | Mail Online Posted on December 22, 2010 by OldNol http://www.dailymail.co.uk/sciencetech/article-1340436/Why-cold-warm-Greenland-Diverted-jet-stream-letting-icy-blast-Arctic.html So that’s why it’s a mild -5C here and why the UK is so cold….