1. Department of Climate and Space Sciences and Engineering University of Michigan Ann Arbor MI USA
2. Thayer School of Engineering Dartmouth College Hanover NH USA
3. Department of Physics and Astronomy University of Calgary Calgary Alberta Canada
4. Applied Physics Laboratory Johns Hopkins University Laurel MD USA
5. The Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA
6. School of Physics and Astronomy University of Minnesota, Twin Cities Minneapolis MN USA