Catchments as space-time filters – a joint spatio-temporal geostatistical analysis of runoff and precipitation J. O. Skøien and G. Blöschl Institute for Hydraulic and Water Resources Engineering, Vienna University of Technology, Karlsplatz 13, 1040 Vienna, Austria Received: 29 March 2006 – Accepted: 21 April 2006 – Published: 12 June 2006 Correspondence to: J. O. Skøien ([email protected])