1. NASA Langley Research Center; Hampton; Virginia; USA
2. LATMOS, CNRS, INSU; Université de Versailles Saint Quentin, Université de Paris 6; Guyancourt; France
3. Institute of Space and Atmospheric Studies; University of Saskatchewan; Saskatoon, Saskatchewan; Canada
4. Institute for Research and Development; Paraiba Valley University; São José dos Campos; Brazil