1. Department of Meteorology and National Centre for Earth ObservationUniversity of Reading Reading UK
2. Department of Atmospheric SciencesColorado State University Fort Collins Colorado USA
3. Seminar für Statistik ETH Zurich Swiszerland
4. Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research Bremerhaven Germany
5. Deutscher Wetterdienst Offenbach Germany
6. Institut für MathematikUniversit'́at Potsdam Potsdam Germany