1. Department of Meteorology, University of Reading, and European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom;
2. Department of Meteorology, and Department of Geography and Environmental Science, University of Reading, and European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom;
3. Department of Meteorology, and Department of Mathematics and Statistics, University of Reading, and National Centre for Earth Observation (NCEO), Reading, United Kingdom;
4. European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom;
5. European Centre for Medium-Range Weather Forecasts, Reading, and Department of Geography, Loughborough University, Loughborough, United Kingdom