Jennifer Francis
Department of Marine and Coastal Sciences
Rutgers University, New Brunswick, New Jersey USA

Arctic/Mid-Latitude Linkages: New Evidence, Mechanisms, Metrics, and Emerging Questions

Time and place
Thursday 15 October 2015, 14.15
Room C609, Arrhenius Laboratory, 6th floor

In this presentation, I will build on analysis presented in Francis and Vavrus (GRL, 2012) in which mechanisms were proposed and demonstrated that link enhanced warming in the Arctic (Arctic amplification) during recent decades with changes in mid-latitude weather patterns. A flurry of new studies provide additional evidence for linkages that differ by season and region, and new metrics suggest that Arctic amplification is leading to more amplified jet-stream patterns and blocking. Prolonged weather conditions are often associated with extreme weather, such as droughts, cold spells, heat waves, and some flooding events, which have become more frequent in recent years. Recent progress is illuminating but also leads to new questions and unknowns, which I will discuss.