1. a Research Centre for Agricultural and Forest Environment , Polish Academy of Sciences , Poznań , Poland E-mail:
2. b Potsdam Institute for Climate Impact Research , Potsdam , Germany E-mail:
3. c North—South Center for Development Research (ZEF) , University of Bonn , Bonn , Germany E-mail:
4. d Institute of Fluid Dynamics, Central University of Venezuela , Caracas , Venezuela E-mail:
5. e Walker Institute for Climate System Research, University of Reading , Reading , UK E-mail:
6. f Institute of Physical Geography, University of Frankfurt/M. , Frankfurt am Main , Germany E-mail:
7. g Institute of Engineering, National Autonomous University of Mexico (UNAM) , Cogoacon , Mexico E-mail:
8. h National Center for Atmospheric Research , Boulder , Colorado , USA E-mail:
9. i Institute of Industrial Science, University of Tokyo , Tokyo , Japan E-mail:
10. j Department of Meteorology , Istanbul Technical University , Maslak , Istanbul , Turkey E-mail:
11. k State Hydrological Institute , St. Petersburg , Russian Federation E-mail: