1. Climate and Space Sciences and Engineering University of Michigan Ann Arbor MI USA
2. Environmental Sciences University of Virginia Charlottesville VA USA
3. Marine Chemistry & Geochemistry Woods Hole Oceanographic Institution Woods Hole MA USA
4. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology Cambridge MA USA
5. School for the Environment University of Massachusetts Boston Boston MA USA
6. Royal Belgian Institute for Space Aeronomy Brussels Belgium
7. IMK‐ASF Karlsruhe Institute of Technology Karlsruhe Germany
8. Institute of Environmental Physics University of Bremen Bremen Germany
9. National Institute of Water and Atmospheric Research Lauder New Zealand
10. Division of Geological and Planetary Sciences California Institute of Technology Pasadena CA USA
11. IMK‐IFU Karlsruhe Institute of Technology Garmisch‐Partenkirchen Germany
12. Department of Physics University of Toronto Toronto Ontario Canada