Nazzareno Pierdicca, Davide Comite, Sapienza University of Rome, Italy; Leila Guerriero, Laura Dente, University Tor Vergata of Rome, Italy; Martin Unwin, Gabrielle Marigold, Tom Norris, Andy Newton, Surrey Satellite Technology Ltd (SSTL), United Kingdom; Estel Cardellach, Li Weiqiang, Emanuele Santi, Institut d'Estudis Espacials de Catalunya (IEEC), Spain; Kimmo Rautiainen, Finnish Meteorological Institute (FMI), Finland; Maria Paola Clarizia, Nicholas Floury Floury, European Space Agency (ESA), Netherlands