Day and night cloud occurrence climatology for space-to-ground optical communication feasibility: the advantages of a thermal infrared sky imager

Olivier Liandrat1, Clément Bertin1, Sylvain Cros2 and Laurent Saint-Antonin1, (1)IRT Saint Exupéry, Toulouse, France, (2)Reuniwatt, Sainte-Clotilde, Reunion