Audrey Martini, University of Versailles Saint-Quentin en Yvelines, Versailles, France, Nicolas Viltard, CNRS, LATMOS, PARIS, France, Pierre-Emmanuel Kirstetter, University of Oklahoma, School of Civil Engineering and Environmental Sciences and School of Meteorology, Norman, OK, United States and Julien Delanoë, LATMOS, UVSQ, IPSL, CNRS, Guyancourt, France