Global characteristics of gravity waves in the upper atmosphere of Mars as measured by MAVEN/NGIMS

A. G. Siddle, I. C.F. Mueller-Wodarg, S. W. Stone, Roger Yelle

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

We present an analysis of gravity waves in Mars' upper atmosphere above 120 km. Using in-situ data from NGIMS onboard MAVEN we have been able to characterise waves from nearly 4000 orbits. We have used temperature and density profiles to extract perturbations and interpret these as vertically propagating gravity waves which we characterise by their amplitude and wavelength. In this region of the atmosphere gravity waves have amplitudes of around 10%. Vertical wavelengths are found to be around 10–30 km. We observe an increase in gravity wave amplitudes with increasing solar zenith angle. Gravity wave amplitudes appear invariant in altitude on the dayside, however increase with altitude on the nightside.

Original languageEnglish (US)
Pages (from-to)12-21
Number of pages10
JournalIcarus
Volume333
DOIs
StatePublished - Nov 15 2019

Keywords

  • Gravity waves
  • Mars
  • MAVEN
  • Thermosphere

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Fingerprint Dive into the research topics of 'Global characteristics of gravity waves in the upper atmosphere of Mars as measured by MAVEN/NGIMS'. Together they form a unique fingerprint.

  • Cite this