Martian Dust Storms And Gravity Waves: Disentangling Water Transport To The Upper Atmosphere.
D. S. Shaposhnikov, Moscow Institute Of Physics And Technology, Moscow, Russia (Shaposhnikov@Phystech.Edu),
A. S. Medvedev, Max Planck Institute For Solar System Research, GöTtingen, Germany, A. V. Rodin, Moscow Institute
Of Physics And Technology, Space Research Institute, Moscow, Russia, E. YiğIt, George Mason University, Fairfax,
Va, Usa, P. Hartogh, Max Planck Institute For Solar System Research, GöTtingen, Germany.

Abstract

Figures

Simulations With The Max Planck Institute Martian General Circulation Model For Martian Years 28 And 34 Reveal
Details Of The Water “Pump" Mechanism And The Role Of
Gravity Wave (Gw) Forcing. Water Is Advected To The Upper Atmosphere Mainly By Upward Branches Of The Meridional Circulation: In Low Latitudes During Equinoxes And
Over The South Pole During Solstices. Molecular Diffusion
Plays Little Role In Water Transport In The Middle Atmosphere And Across The Mesopause. Gws Modulate The Circulation And Temperature During Global Dust Storms, Thus
Changing The Timing And Intensity Of The Transport. At
Equinoxes, They Facilitate Water Accumulation In The Polar Warming Regions In The Middle Atmosphere Followed
By Stronger Upwelling Over The Equator. As Equinoctial
Storms Decay, Gws Tend To Accelerate The Reduction Of
Water In The Thermosphere. Gws Delay The Onset Of The