1. University of Reading, Reading, United Kingdom
2. University College London, London, United Kingdom
3. Science and Technology Facilities Council, Swindon, United Kingdom
4. NESII/CIRES/NOAA Earth System Research Laboratory, Boulder, Colorado
5. NASA Goddard Space Flight Center, Greenbelt, Maryland
6. NASA Jet Propulsion Laboratory, Pasadena, California
7. European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom