Gunter Stober, Bern University of Applied Sciences, Bern, Switzerland, Alan Liu, Embry-Riddle Aeronautical University, Department of Physical Sciences, Daytona Beach, United States, Alexander Kozlovsky, Sodankylä Geophysical Observatory, Sodankylä, Finland, Diego Janches, NASA/GSFC, Greenbelt, MD, United States, Jie Zeng, University of Science and Technology of China, Hefei, China, Loretta Poku, University of Bern, Institute for Applied Physics, Bern, Switzerland, Wen Yi, University of Science and Technology of China, CAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences, Hefei, China, Witali Krochin, University Bern, Microwave Physics, Bern, Switzerland, Zishun Qiao, NCAR High Altitude Observatory, Department of Physical Sciences, Boulder, United States, Satonori Nozawa, ISEE, Nagoya University, Nagoya, Japan, Masaki Tsutsumi, NIPR National Institute of Polar Research, Tachikawa, Tokyo, Japan, Njal Gulbrandsen, University of Tromsø, Tromsø, Norway, Johan Kero, Swedish Institute of Space Physics, Kiruna, Sweden, Mark Lester, University of Leicester, Leicester, United Kingdom, Nicholas J Mitchell, University of Bath, Bath, United Kingdom and Tracy Moffat-Griffin, Boston University, Boston, United States