Trissevgeni Stavrakou¹, Jean Francois Mueller², Bruno Franco³, Maite Bauwens², Lieven Clarisse⁴, Pierre-Francois Coheur⁴ and Cathy Clerbaux⁵, (1)Belgisch Instituut voor Ruimte-Aeronomie, Brussel, Belgium, (2)Belgian Institute for Space Aeronomy, Brussels, Belgium, (3)Université Libre de Bruxelles, Brussels, Belgium, (4)Université Libre de Bruxelles (ULB), Quantum Chemistry and Photophysics, Atmospheric Spectroscopy, Brussels, Belgium, (5)LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales,Sorbonne Université, UVSQ, CNRS, Paris, France