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Jennifer Francis

Department of Marine and Coastal Sciences, Rutgers University

Linkages Between The Arctic Meltdown and Extreme Weather: New Evidence, Mechanisms, Metrics, and Emerging Questions

Room 811 AOSS, April 18, 2016, 3:30 PM

Abstract

In this presentation, I will build on analysis presented in Francis and Vavrus (GRL, 2012) in which mechanisms were proposed and demonstrated that link amplified Arctic warming (AAW) during recent decades with changes in mid-latitude weather patterns. A flurry of new studies provides additional evidence for linkages that differ by season and region, and new metrics suggest that AAW is leading to more amplified jet-stream configurations and persistent atmospheric patterns. 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.



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