Mountain waves explain the formation of first NAT PSCs detected by MIPAS in the Antarctic stratosphere - Höpfner, M.; Stiller, G.; Clarmann, T. von; Fischer, H.; Larsen, N.; Svendsen, S.; Spang, R.; Ma, J.; Eckermann, S. D.; Broutman, D.; Massoli, P.; Cairo, F.; et al. (2005)