The Influence of Martian Global Dust Storm 2001A on CO2 Hot Band Emission As Observed by the Thermal Emission Spectrometer

Details The Influence of Martian Global Dust Storm 2001A on CO2 Hot Band Emission As Observed by the Thermal Emission Spectrometer The Influence of Martian Global Dust Storm 2001A on CO2 Hot Band Emission As Observed by the Thermal Emission Spectrometer

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002dps....34.1503m&link_type=abstract

American Astronomical Society, DPS Meeting #34, #15.03; Bulletin of the American Astronomical Society, Vol. 34, p.862

Astronomy and Astrophysics

Astronomy

Scientific paper

The Thermal Emission Spectrometer on Mars Global Surveyor observed the genesis and evolution of a major dust storm beginning on 26 June 2001 at areocentric longitude Ls = 185 deg. The atmospheric temperature at 0.5 mbar ( 25 km above the surface) reached a maximum for 200 deg < Ls < 220 deg( 23 July 2001 to 23 August 2001). The middle atmosphere temperature was 40K warmer during this time than the corresponding Ls interval ( 4 September 1999 to 6 October 1999) in the previous Martian year. (Smith et al., Icarus 157 , 259-263 (2001)). The altitude of the region of nonlocal thermodynamic equilibrium (non-LTE) emission from the 10μ m CO2 hot bands rose 10 km compared to the earlier time. We present preliminary modeling of this emission region, comparing it to our previous modeling of non-LTE CO2 hot band seasonal variation (Maguire et al., J.G.R. 107, 10.1029/2001JE001516, 2002). This work was supported in part by the NASA Mars Data Analysis Program.

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