TY - JOUR A1 - Axelsson, K. A1 - Sergienko, T. A1 - Nilsson, H. A1 - Brändström, U. A1 - Asamura, K. A1 - Sakanoi, T. T1 - First negative system of N2+ in aurora: simultaneous space-borne and ground-based measurements and modeling results JO - Ann. Geophys. J1 - ANGEO VL - 32 IS - 5 SP - 499 EP - 506 Y1 - 2014/05/20 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/32/499/2014/ L1 - https://angeo.copernicus.org/articles/32/499/2014/angeo-32-499-2014.pdf DO - 10.5194/angeo-32-499-2014 ER -