Lecture Co-ordinated observations of ozone, PSCs and stratospheric trace gases at ALOMAR, Norway. Hansen, G.H.; Arlander, W.; Edvardsen, K.; Tørnkvist, K.; Fiedler, J.; von Cossart, G.; Sarcissian, A. Publication details European Geophysical Society, Annual Meeting: XXV General Assembly, Nice, 26.-29.4.2000.