Iphigenia Keramitsoglou, National Observatory of Athens, Greece; Chris Kiranoudis, National Technical University of Athens, Greece; Panagiotis Sismanidis, National Observatory of Athens, Greece; Noelia Ferreras-Alonso, Sara Barilari, Ivan Ramos-Diez, CARTIF Foundation, Spain; Sofie Hellsten, Jane Ihrfors, IVL Swedish Environmental Research Institute, Sweden; Patricia Perez, Marta Toro, GMV Aerospace and Defense S.A.U., Spain