Reinhard Mechler1,2, Thomas Schinko3,4. 1. International Institute for Applied Systems Analysis, Schlossplatz 1, 2361 Laxenburg, Austria. mechler@iiasa.ac.at. 2. Vienna University of Economics and Business, 1020 Vienna, Austria. 3. International Institute for Applied Systems Analysis, Schlossplatz 1, 2361 Laxenburg, Austria. 4. Wegener Center for Climate and Global Change, University of Graz, 8010 Graz, Austria.