Mars Perihelion Cloud Trails As Revealed By Marci: Mesoscale Topographically Focused Updrafts And Gravity Wave Forcing Of High Altitude Clouds R. T. Clancy, M. J. Wolff, N. G. Heavens, P. B. James, S. W. Lee, B. J. Sandor, Space Science Institute, Boulder, Co Usa (Clancy@Spacescience.Org), B. A. Cantor, M. C. Malin, Malin Space Science Systems, San Diego, Ca Usa, D. Tyler, Jr., Oregon State University, Corvallis, Or Usa, And A. Spiga, Lmd/Ips, Sorbonne University, Paris Fr. Published In Clancy Et Al., Introduction: The Study Of High Altitude Mars Clouds Is Stimulated By The Wide Variety Of Properties And Behaviors Of Mesospheric (Z > 50km) Aerosols (E.G., Clancy Et Al., 2019). Mars Mesospheric Aerosols Reflect Distinctive Processes Such As Large-Scale Dust Storm Injection Of Dust (E.G., Et Al, 2019), Saturation/Condensation Of The Bulk Atmosphere (I.E., Co2;