Effects of a dust storm on the coupled Mars thermosphere-ionosphere

Details Effects of a dust storm on the coupled Mars thermosphere-ionosphere Effects of a dust storm on the coupled Mars thermosphere-ionosphere

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....2192w&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #2192

Computer Science

Scientific paper

In order to investigate the influence of a dust storm event on the thermosphere-ionosphere, complementary numerical simulations have been carried out: the coupled lower and upper atmosphere MGCM (Mars General Circulation Model) and MTGCM (Mars Thermosphere General Circulation Model) models address the processes coupling the Mars lower and upper atmospheres. These models are 3-D self-consistent models, the latter whose output is being used by a detailed ionospheric 1-D model. This coupled magnetohydrodynamic (MHD), fluid and kinetic model describes both the thermal and suprathermal plasma of the dayside ionosphere between 100 and 500 km height. We present the effect of a dust storm on the main thermospheric and ionospheric parameters: neutral composition, wind and temperature, ion and electron densities and temperatures. The height and magnitude of the dayside F1-peak (tracked by the MTGCM and the coupled MHD, fluid and kinetic model) is compared with previous Radio Occulation experiments results. The opportunities to detect these effects by space experiments on board planned and future missions to Mars will be outlined.

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