Physics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..252w&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.252
Physics
Scientific paper
To investigate the behavior of transient eddies and their relationship with atmospheric dust loadings, we have performed general circulation model (MarsWRF) simulations under different dust conditions. For the control run using the Mars Climate Database MGS background dust scenario, the model simulates well the general seasonality and vertical structure of traveling waves. Specifically, model results show strong near surface temperature variations before and after the winter solstice period and strong surface pressure variations throughout the fall and winter, which indicates that the solstice m = 1 and 2 modes are more barotropic than the m = 3 mode. However, the 2 - 3 sol m = 3 waves in the simulation appear to be not strong and persistent enough. We have experimented with different horizontal and vertical dust distributions, traveling dust forcing, and interactive dust simulations. Some simulations show greatly enhanced m = 3 wave modes. We will present the favorable conditions for m = 3 wave excitation, the seasonal evolution of wave modes in the simulations and discuss the implications for the development of flushing dust storms.
Newman Charles
Richardson Mark I.
Toigo Anthony D.
Wang Hai-Hong
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