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Lecture: Identifying Jet Stream Response to Human Activity
June 13, 2017 @ 6:00 pm - 8:00 pm UTC-6
Come learn about how the role the jet stream plays in connecting what happens at the poles of the Earth to the rest of the world!
Dr. Elizabeth Barnes of University of Colorado will explain the relationship between the jet streams (regions of air ~7 miles up that move quickly from west-to-east and impact our weather), human activity, and climate change.
The atmosphere is a chaotic place to measure trends. The chaos, or “noise” of the atmosphere can confound our ability to quantify the atmospheric response to human activity. Specifically, Dr. Barnes’ talk focuses on the responses of atmospheric jet-streams ) to two types of human activity: (1) pollution that led to the Ozone Hole and (2) Arctic sea ice loss driven, in part, by greenhouse gases. While the impacts of the Ozone Hole on the Southern Hemisphere jet-stream are clear in atmospheric observations, the impacts of Arctic sea ice loss on the Northern Hemisphere jet-stream are less clear. This talk concludes by looking to the future to see whether the impacts of a recovering Ozone Hole and continued melting of Arctic sea ice will emerge from the “noise” in the coming decades.
About Elizabeth Barnes: Elizabeth Barnes loves noise – atmospheric noise that is. Her passion is sifting through geophysical data in search of previously undetected signals. She gets to do this every day, as well as teach the next generation of scientists techniques for doing so, as an Assistant Professor at Colorado State University. Her research covers a variety of questions related to atmospheric variability, including, “Can we forecast extreme weather 5 weeks in advance?” to “How does the atmosphere respond to volcanic eruptions?” Prof. Barnes and her fantastic research group have written over 40 papers on extracting atmospheric “music” from the “noise” across a range of past, present and future climates.