What Have we Learned From BARREL?

Wednesday, 7 March 2018: 08:50
Longshot and Bogey (Hotel Quinta da Marinha)
Robyn M Millan, Dartmouth College, Department of Physics & Astronomy, Hanover, NH, United States, John Glen Sample, Montana State University, Physics, Bozeman, MT, United States, Michael P McCarthy, University of Washington Seattle Campus, Earth and Space Sciences, Seattle, WA, United States, David Miles Smith, Univ of California Santa Cruz, Santa Cruz, CA, United States, Leslie A Woodger, Dartmouth College, Physics & Astronomy, Hanover, NH, United States and Alexa Jean Halford, Dartmouth College, Hanover, NH, United States
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Abstract:
The Balloon Array for Radiation belt Relativistic Electron Loss (BARREL) is a multiple-balloon experiment that works in tandem with NASA’s twin Van Allen Probes to study atmospheric loss of radiation belt electrons. A total of 55 balloons were launched from Antarctic in 2013 and 2014 and Sweden in 2015 and 2016. BARREL provided the first balloon measurements of relativistic electron precipitation while in situ equatorial measurements of both plasma waves and energetic particles were available. The multi-point measurements also provide information about the spatial scale of energetic precipitation. This presentation will review BARREL science results and will provide an overview of work in progress and new questions that have emerged as a result of this experiment.