TY - SLIDE KW - workshop KW - assimilation KW - modelling KW - stratosphere KW - troposphere AU - H. Wernli AU - M Sprenger AU - M Bourqui AU - P Hoor C1 - Events DA - 2003 LA - eng PY - 2003 TI - Cross tropopause transport: Processes and quantification based upon ECMWF analyses ER -