Forecast, observation and modelling of a deep stratospheric intrusion event over Europe

T. Trickl, A. Stohl, H. Wernli, O. Cooper, C. Zerefos, H. Gaeggeler, A. Priller, C. Schnabel, H. E. Scheel, H. J. Kanter, L. Tobler, P. W. Kubik, P. Cristofanelli, C. Forster, P. James, E. Gerasopoulos, A. Delcloo, A. Papayannis, H. Claude