1. Hans Ertel Centre for Weather Research Deutscher Wetterdienst, Munich Germany
2. ECMWF, Reading UK
3. CEREA, Joint Laboratory École des Ponts ParisTech and EDF R&D, Université Paris‐Est Champs‐sur‐Marne France
4. Department of Atmospheric and Oceanic Science University of Maryland College Park USA
5. NASA Goddard Space Flight Center Greenbelt Maryland USA
6. School of Mathematical Computational and Physical Sciences, University of Reading UK
7. Alfred Wegener Institute Helmholtz Center for Polar and Marine Research Bremerhaven Germany
8. Deutscher Wetterdienst, Offenbach Germany