1. Alfred Wegener Institute, Bremerhaven, Germany
2. Alfred Wegener Institute, Bremerhaven, and University of Bremen, Bremen, Germany
3. Scientific Committee on Antarctic Research, Cambridge, United Kingdom, and International Arctic Research Center, University of Alaska Fairbanks, Fairbanks, Alaska
4. European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom
5. WMO consultant, Montreal, Canada
6. CNRM, Météo France, CNRS UMR 3589, Toulouse, France
7. NOAA/Earth System Research Laboratory, Boulder, Colorado
8. Otaki, New Zealand
9. World Meteorological Organization, Geneva, Switzerland
10. University of Colorado Boulder, Boulder, Colorado
11. Byrd Polar and Climate Research Center, The Ohio State University, Columbus, Ohio
12. Meteorological Research Division, Environment and Climate Change Canada, Dorval, Quebec, Canada
13. A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, Moscow, Russia
14. NCAS-Climate, Department of Meteorology, University of Reading, Reading, United Kingdom
15. Georges Lematre Centre for Earth and Climate Research, Earth and Life Institute, Université Catholique de Louvain, Louvain-la-Neuve, Belgium, and Climate Forecasting Unit, Catalan Institute of Climate Sciences, Barcelona, Spain
16. School of Environmental Sciences, University of East Anglia, Norwich, United Kingdom
17. Alaska Region, NOAA/National Weather Service, Anchorage, Alaska