1. Department of Environmental Science, Faculty of Sciences, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
2. Royal Netherlands Meteorological Institute, Postbus 201, 3730 AE De Bilt, The Netherlands
3. Deltares,
P.O. Box 177, 2600 MH Delft, The Netherlands