Influence of gravity waves on the Martian atmosphere

Details Influence of gravity waves on the Martian atmosphere Influence of gravity waves on the Martian atmosphere

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..419m&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.419

Physics

Scientific paper

Our recently developed nonlinear spectral gravity wave (GW) parameterization has been implemented into a Martian general circulation model (GCM) extending to ~130 km. The simulations reveal a very strong influence of subgrid-scale GWs with non-zero phase velocities in the upper mesosphere (100-130 km). The momentum deposition provided by breaking/saturating/dissipating GWs of lower atmospheric origin significantly decelerate the zonal wind, and produce jet reversals similar to those in the terrestrial mesosphere and lower thermosphere. GWs also weaken the meridional wind, transform the twocell meridional equinoctial circulation to a one-cell summer-to-winter hemisphere transport, and modify the zonal-mean temperature by up to ±15 K.

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