1. Department of Geography and Environmental Science, University of Reading, and European Centre for Medium-Range Weather Forecasts, Shinfield Park, Reading, United Kingdom
2. Research Applications Laboratory, NCAR, Boulder, Colorado
3. Department of Geography and Environmental Science, University of Reading, Reading, United Kingdom
4. Department of Geography and Environmental Science, and Department of Meteorology, University of Reading, Reading, United Kingdom
5. European Centre for Medium-Range Weather Forecasts, Shinfield Park, Reading, and School of Geographical Sciences, University of Bristol, Bristol, United Kingdom