First Cross Emm/Exi And Tgo/Acs-Mir Observations Of Martian Water Ice Clouds. A. Stcherbinine, Dept. Of Astronomy And Planetary Science, Northern Arizona University, Flagstaff, Az, Usa (Aurelien.Stcherbinine@Nau.Edu), M. J. Wolff, Space Science Institute, Boulder, Co, Usa, C. S. Edwards, Dept. Of Astronomy And Planetary Science, Northern Arizona University, Flagstaff, Az, Usa, F. Montmessin, Latmos/Ipsl, Uvsq, Université Paris-Saclay, Sorbonne Université, Cnrs, Guyancourt, France, M. Vincendon, Institut D’Astrophysique Spatiale, Université Paris-Saclay, Cnrs, Orsay, France, O. Korablev, A. Fedorova, A. Trokhimovskiy, Space Research Institute (Iki), Moscow, Russia, M. Osterloo, R. Shuping, Space Science Institute, Boulder, Co, Usa. Introduction Water Ice Clouds Play An Important Role In The Martian Water Cycle And Climate. They Are A Major Actor In The Inter-Hemispheric Water Exchange And Affect The Radiative Structure Of The Atmosphere, As Their Crystals Absorb And Scatter The Incoming Solar Radiation [2, 6, And References Contained Within]. Thus, Monitoring The Spatial And Temporal Evolution Of The Martian Water Ice Clouds, Along With Their Physical Properties (Crystals Size, Opacity) Is Of Importance To Improve Our Understanding And Modeling Of The Current Martian Climate. The Emirates Exploration Images (Exi) Instrument Onboard Emirates Mars Mission (Emm) "Hope" Probe Is A Uv-Visible Framing Camera That Is Imaging The Mars