Elisabeth J Moyer¹, Benjamin Clouser¹, Sergey M. Khaykin², Martina Kraemer³, Clare E Singer⁴, Eric Jensen⁵, Alexey Lykov⁶, Silvia Bucci⁷, Bernard Legras⁸, Stephan Borrmann⁹, Francesco Cairo¹⁰, Velentin Mitev¹¹, Renaud Matthey¹², Christian Rolf¹³, Silvia Viciani¹⁴, C Michael Volk¹⁵, Fabrizio Ravegnani¹⁰, Francesco D’Amato¹⁴, Vladimir A Yushkov¹⁶, Alexey Ulanovsky¹⁶ and Fred Stroh¹⁷, (1)University of Chicago, Geophysical Sciences, Chicago, IL, United States, (2)LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales, LATMOS, Paris Cedex 05, France, (3)Forschungszentrum Juelich, Juelich, Germany, (4)University of Chicago, Physics, Chicago, IL, United States, (5)NASA, Boulder, CO, United States, (6)Central Aerological Observatory of RosHydroMet, Dolgoprudny, Russia, (7)National Research Council (CNR), Institute of Atmospheric Sciences and Climate (ISAC), Rome, Italy, (8)Laboratoire de Météorologie Dynamique ENS, Paris, France, (9)Johannes Gutenberg University, Max Planck Institute for Chemistry, Particle Chemistry, Mainz, Germany, (10)Institute of Atmospheric Science and Climate, ISAC-CNR, Rome, Italy, (11)Centre Suisse d’Electronique et de Microtechnique Neuchatel, Neuchatel, Switzerland, (12)LTF-University of Neuchatel, Neuchatel, Switzerland, (13)Forschungszentrum Juelich, IEK-7, Juelich, Germany, (14)CNR-INO National Institute of Optics, Florence, Italy, (15)Bergische Univ. Wuppertal, Wuppertal, Germany, (16)Central Aerological Observatory of RosHydroMet, Moscow, Russia, (17)Forschungszentrum Juelich, Jülich, Germany