Global characteristics of gravity waves in the upper atmosphere of Mars as measured by MAVEN/NGIMS
AffiliationUniv Arizona, Lunar & Planetary Lab
MetadataShow full item record
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
CitationSiddle, A. G., Mueller-Wodarg, I. C. F., Stone, S. W., & Yelle, R. V. (2019). Global characteristics of gravity waves in the upper atmosphere of Mars as measured by MAVEN/NGIMS. Icarus, 333, 12-21.
RightsCopyright © 2019 Elsevier Inc. All rights reserved.
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AbstractWe 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.
Note24 month embargo; published online: 24 May 2019
VersionFinal accepted manuscript
SponsorsScience and Technology Facilities Council; MAVEN mission, part of the NASA Mars Exploration Program