Effects Of Orographic Gravity Wave Drag In The
Martian Atmosphere By Parameterization And
Gravity Wave-Resolving Simulations
A. Kling , Nasa Ames/Baeri (Alexandre.M.Kling@Nasa.Gov), R. J Wilson, A. Brecht, M. Kahre, Nasa
Ames, J. Murphy, Nmsu, New Mexico, Usa

Introduction:
Gravity Or Inertia-Gravity Waves Are Ubiquitous In
The Martian Atmosphere [1, 2]. Gravity Waves (Gws)
Are Described As Orographic When They Are Excited By
An Isentropic Displacement Of Low-Level Winds That
Encounter An Obstacle (Topography) Or Nonorographic When The Source Of The Perturbation Is
Dynamic (E.G., Convection, Jet/Front Systems). In The
Mesosphere And In The Thermosphere, Gws May
Break And Interact With Planetary Waves, Triggering
Secondary Waves [3, 4, 5] And Dynamically Alter The
Circulation And Thermal Structure.
In Principle, The Effects Of Gws Could Be Incorporated Into Mars Global Climate Models (Mgcms)
By Explicitly Resolving Them And Validating The Results Against Extant Observations, As Can Be Done With
Mars’S Baroclinic Waves And Thermal Tides. In That