Physics
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusm.p23a..02w&link_type=abstract
American Geophysical Union, Spring Meeting 2009, abstract #P23A-02
Physics
0394 Instruments And Techniques, 5210 Planetary Atmospheres, Clouds, And Hazes (0343), 5405 Atmospheres (0343, 1060), 5704 Atmospheres (0343, 1060)
Scientific paper
Although Martian wind measurements have been identified as important for understanding the Martian atmosphere and for operational needs (for Entry/Descent/Landing, aerocapture, aerobraking, and orbit lifetimes), to date there has not been a wind instrument capable of measuring winds globally on Mars included in any mission . The Dynamic Atmosphere Mars Observer (DynAMO) is an instrument concept initially formulated in 2000 (Ward et al., 2002) and proposed as an instrument for the CNES Mars 2007 Orbiter in 2002. The instrument is a field widened Michelson interferometer, designed to measure vertical profiles of wind in the Martian atmosphere. The two emission targets are the O2 IR atmospheric band at 1.27 microns and an oxygen recombination emission, the green line from O(1S) at 557.7 nm. These emissions allow winds in the Martian atmosphere to be observed from 10 to 45 km and 80 to 160 km during the day and 55 to 75 km and 80 to 100 km at night. In this presentation, dynamical signatures from a Martian general circulation model (M3M), being developed at York University, are reported, and the implementation of a forward model developed at the University of New Brunswick for DynAMO is summarized. An overview of the DynAMO concept is followed by an outline of the observing conditions associated with a nominal orbit and the modelled atmospheric conditions derived from a run of the M3M. The coupling of these two models provides the means to investigate the scientific capabilities of this instrument. These capabilities have the potential to significantly advance our understanding of Martian winds.
Akingunola Ayodeji
Bell Alan
McConnell John C.
Wang Dongming
Ward William E.
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