Remote sensing of the arctic stratosphere with the new balloon-borne MIPAS-B2 instrument - Oelhaf, H.; Clarmann, T. von; Fischer, H.; Friedl-Vallon, F.; Keim, C.; Maucher, G.; Sartorius, C.; Seefeldner, M.; Trieschmann, O.; Wetzel, G.; Wölfel, M. (1999)