Multi-instrument observations and numerical modeling of intense ion upflows during stormtime polar cap expansion

Shasha Zou, University of Michigan Ann Arbor, Climate and Space Sciences and Engineering, Ann Arbor, MI, United States, Dogacan Su Ozturk, University of Alaska, Fairbanks, United States, Aaron J Ridley, University of Michigan Ann Arbor, Climate and Space Sciences and Engineering, Ann Arbor, United States, Xianzhe Jia, University of Michigan, Department of Climate and Space Sciences and Engineering, Ann Arbor, United States, Michael J Nicolls, SRI International Menlo Park, Menlo Park, CA, United States, Anthea Coster, Massachusetts Institute of Technology, Cambridge, MA, United States, Evan G Thomas, Dartmouth College, Thayer School of Engineering, Hanover, NH, United States and J. Michael Ruohoniemi, Virginia Polytechnic Institute and State University, Blacksburg, United States