Richard J Engelen, Jerome Barre, Melanie Ades, Anna Agusti-panareda, Gianpaolo Balsamo, Nicolas Bousserez, Margarita Choulga, Johannes Flemming, Antje Inness, Zak Kipling, Sebastien Massart, Joe McNorton, Mark Parrington and Vincent-Henri Peuch, European Centre for Medium-Range Weather Forecasts, Reading, United Kingdom