Influence of gravity waves on the Martian atmosphere: General circulation modeling

Details Influence of gravity waves on the Martian atmosphere: General circulation modeling Influence of gravity waves on the Martian atmosphere: General circulation modeling

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jgre..11610004m&link_type=abstract

Journal of Geophysical Research, Volume 116, Issue E10, CiteID E10004

Physics

2

Atmospheric Processes: General Circulation (1223), Atmospheric Processes: Acoustic-Gravity Waves, Planetary Sciences: Solid Surface Planets: Atmospheres (0343, 1060), Planetary Sciences: Solid Surface Planets: Meteorology (3346), Planetary Sciences: Solar System Objects: Mars

Scientific paper

Our recently developed nonlinear spectral gravity wave (GW) parameterization has been implemented into a Martian general circulation model (GCM) that has been extended to ˜130 km height. 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 even produce jet reversals similar to those observed in the terrestrial mesosphere and lower thermosphere. GWs also weaken the meridional wind, transform the two-cell meridional equinoctial circulation to a one-cell summer-to-winter hemisphere transport, and modify the zonal-mean temperature by up to ±15 K. Especially large temperature changes occur over the winter pole, where GW-altered meridional circulation enhances both “middle” and “upper” atmosphere maxima by up to 25 K. A series of sensitivity tests demonstrates that these results are not an artefact of a poorly constrained GW scheme, but must be considered as robust features of the Martian atmospheric dynamics.

Affiliated with

Also associated with

No associations

Rating

Influence of gravity waves on the Martian atmosphere: General circulation modeling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Influence of gravity waves on the Martian atmosphere: General circulation modeling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Influence of gravity waves on the Martian atmosphere: General circulation modeling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1650245