*Harriet George¹, Adnane Osmane², Emilia Kilpua², Solene Lejosne³, Lucile Turc², Maxime Grandin², Milla Kalliokoski⁵, Sanni Hoilijoki², Urs Ganse², Markku Alho², Markus Battarbee², Marja Bussov², Maxime Dubart², Andreas Johlander, Talgat Manglayev, Kostis Papadakis², Yann Pfau-Kempf², Jonas Suni², Vertti Tarvus², Hongyang Zhou², Minna Palmroth^2,4 (1.Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, 2.Department of Physics, University of Helsinki, Helsinki, Finland, 3.Space Sciences Laboratory, University of California, Berkeley, Berkeley, CA, United States, 4.Space and Earth Observation Center, Finnish Meteorological Institute, Helsinki, Finland, 5.Japan Aerospace Exploration Agency, Tokyo, Japan)