Comparison of the Martian thermospheric density and temperature from IUVS/MAVEN data and general circulation modeling

Comparison of the Martian thermospheric density and temperature from IUVS/MAVEN data and general circulation modeling

Newly released Imaging Ultraviolet Spectrograph/Mars Atmosphere and Volatile EvolutioN (IUVS/MAVEN) measurements of CO2 density in the Martian thermosphere have been used for comparison with the predictions of the Max Planck Institute Martian General Circulation Model (MPI‐MGCM). The simulations rep...

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Bibliographic Details
Published in:Geophysical research letters Vol. 43; no. 7; pp. 3095 - 3104
Main Authors: Medvedev, Alexander S., Nakagawa, Hiromu, Mockel, Chris, Yiğit, Erdal, Kuroda, Takeshi, Hartogh, Paul, Terada, Kaori, Terada, Naoki, Seki, Kanako, Schneider, Nicholas M., Jain, Sonal K., Evans, J. Scott, Deighan, Justin I., McClintock, William E., Lo, Daniel, Jakosky, Bruce M.
Format: Journal Article
Language:English
Published: Washington John Wiley & Sons, Inc 16-04-2016
Subjects:
Atmosphere
Carbon dioxide
Circulation
Density
general circulation modeling
General circulation models
Geophysics
Gravity waves
IUVS instrument
Mars
Mars atmosphere
Mars missions
Mars thermosphere
Mathematical models
MAVEN mission
temperature and density
Thermosphere
Topography
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Summary:Newly released Imaging Ultraviolet Spectrograph/Mars Atmosphere and Volatile EvolutioN (IUVS/MAVEN) measurements of CO2 density in the Martian thermosphere have been used for comparison with the predictions of the Max Planck Institute Martian General Circulation Model (MPI‐MGCM). The simulations reproduced (within one standard deviation) the available zonal mean density and derived temperature above 130 km. The MGCM replicated the observed dominant zonal wave number 3 nonmigrating tide and demonstrated that it represents a nonmoving imprint of the topography in the thermosphere. The comparison shows a great dependence of the simulated density and temperature to the prescribed solar flux, atomic oxygen abundances and gravity wave effects, with the former two being especially important in the thermosphere above 130 km and the latter playing a significant role both in the mesosphere and thermosphere. Key Points Observed CO2 density and temperature agree well with model predictions Sensitivity of temperature and density on physical parameters is explored Longitudinal disturbances represent a stationary imprint of topography in the thermosphere
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ISSN:0094-8276
1944-8007
DOI:10.1002/2016GL068388