1. Birkeland Centre for Space Science Department of Physics and Technology University of Bergen Bergen Norway
2. INAF‐OAS Bologna Bologna Italy
3. Department of Electronic and Electrical Engineering Centre for Space, Atmospheric and Oceanic Science University of Bath Bath UK
4. Laboratory of Aerology University of Toulouse/CNRS Toulouse France
5. Earth Networks Germantown MD USA
6. National Space Institute Technical University of Denmark (DTU Space) Kongens Lyngby Denmark
7. Image Processing Laboratory University of Valencia Valencia Spain