Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dps....40.1403t&link_type=abstract
American Astronomical Society, DPS meeting #40, #14.03; Bulletin of the American Astronomical Society, Vol. 40, p.407
Astronomy and Astrophysics
Astronomy
Scientific paper
The Martian version of the National Center for Atmospheric Research (NCAR) Weather Research and Forecasting (WRF) model has been developed to study a broad range of global, mesoscale, and microscale problems. We present simulations of mesoscale areas interactively nested within a global region (i.e., a mesoscale model interactively nested within a general circulation model (GCM)). Two-way interactivity and the use of the same dynamics and integration method eliminates inconsistencies between the global domain and mesoscale nests unavoidable in our prior work with different models. We show two examples that highlight the utility of the model. First is a simulation focused on the northern high latitudes during northern mid-autumn. In order to remove the study region from the area of polar filtering in the GCM, we base the simulation on a transverse cylindrical map projection, in which the rotational poles of Mars have been transposed to the middle of the projection, and then center the higher resolution nest on the geographical northern pole. This season and region sees strong baroclinic frontal development, sometimes associated with dust lifting and storms. Second is a simulation of diurnal flow within Valles Marineris. This circulation is sensitive to the global scale thermal tide, topographic forcing associated with the Tharsis plateau, and strong diurnal forcing associated with the steep slopes of the canyon wall.
Richardson Mark I.
Toigo Anthony
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