1. School of Earth and Environment University of Leeds Leeds UK
2. Department of Meteorology and the Bert Bolin Centre for Climate Research Stockholm University Stockholm Sweden
3. Cooperative Institute for Research in Environmental Science University of Colorado Boulder Boulder CO USA
4. NOAA‐ESRL Boulder CO USA
5. CNRM‐GAME (Météo‐France and CNRS) Toulouse France
6. Max Planck Institute for Meteorology Hamburg Germany
7. Swedish Meteorological and Hydrological Institute Norrköping Sweden
8. National Centre for Atmospheric Science, School of Earth and Environment University of Leeds Leeds UK