1. L’Institut Pierre-Simon Laplace, Centre National de la Recherche Scientifique, Palaiseau, France
2. Institute for Geophysics and Meteorology, University of Cologne, Cologne, Germany
3. Department of Meteorology, University of Reading, Reading, United Kingdom
4. Consiglio Nazionale delle Ricerche–Istituto di Metodologie per l’Analisi Ambientale, Potenza, Italy
5. Department of Geoscience and Remote Sensing, Delft University of Technology, Delft, Netherlands
6. Laboratoire Atmosphère, Milieu, Observations Spatiales, Université Versailles Saint Quentin en Yvelines, Guyancourt, France