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

Alexander S. Medvedev, Hiromu Nakagawa, Chris Mockel, Erdal Yiǧit, Takeshi Kuroda, Paul Hartogh, Kaori Terada, Naoki Terada, Kanako Seki, Nicholas M. Schneider, Sonal K. Jain, J. Scott Evans, Justin I. Deighan, William E. McClintock, Daniel Lo, Bruce M. Jakosky

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)3095-3104
Number of pages10
JournalGeophysical Research Letters
Volume43
Issue number7
DOIs
Publication statusPublished - 2016 Apr 16

Keywords

  • IUVS instrument
  • MAVEN mission
  • Mars thermosphere
  • general circulation modeling
  • gravity waves
  • temperature and density

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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