Observations and Measurements of the Martian Atmosphere

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Planetary Atmospheres".

Deadline for manuscript submissions: closed (24 April 2020) | Viewed by 6775

Special Issue Editors


E-Mail Website
Guest Editor
Laboratory for Atmospheric and Space Physics (LASP), University of Colorado, Boulder, CO 80303, USA
Interests: planetary science; planetary aeronomy; space physics; ultraviolet dayglow

E-Mail Website
Guest Editor
Laboratory for Atmospheric and Space Physics (LASP), University of Colorado, Boulder, CO 80303, USA
Interests: Mars; space weather; space physics; aeronomy; solar physics

Special Issue Information

Dear Colleagues,

For over 200 years, humanity has known that Mars has an atmosphere, but it was not until the advent of space-based observations beginning with the Mariner spacecraft that a clear understanding of the composition, temperature, and dynamics of the Martian atmosphere began to form. In 1976, Viking landers travelled from the top of the Martian atmosphere to the surface, providing the first in situ measurements of the planet’s atmospheric column. During their time on the surface, the Viking landers provided the first direct measurements of climatology and weather on the planet’s surface. Since the Viking missions, over ten missions have visited Mars and made measurements of its atmosphere from the surface to the exosphere. These observations have provided new insight into the major processes active in the Mars atmosphere, including the importance of the CO2, water, and dust cycles for driving the current climate, and the role of processes in the upper atmosphere for driving long-term atmospheric evolution. It has also become evident that coupling between the lower and upper atmosphere is a major source of day-to-day upper atmospheric variability, as well as the variability of water loss to space over seasonal time scales.

Given the wealth of data collected by past missions to the red planet and the numerous missions presently at Mars that, when considered in aggregate, are characterizing the entire atmosphere, it is timely to bring together a collection of papers on the latest analyses of Mars atmospheric observations and measurements. We encourage submissions of research that analyze data from any region of the Mars atmosphere, including the ionosphere. Further, although space-based observations are emphasized, ground-based measurements are also welcome.

Dr. Sonal Kumar Jain
Dr. Edward Thiemann
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Mars atmosphere
  • Mars ionosphere
  • Mars climatology
  • atmospheric science
  • atmospheric coupling
  • atmospheric dynamics
  • Mars water and dust cycle
  • lower atmosphere
  • upper atmosphere
  • middle atmosphere
  • escape

Published Papers (2 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

21 pages, 6529 KiB  
Article
Tidal Wave-Driven Variability in the Mars Ionosphere-Thermosphere System
by Scott A. Thaller, Laila Andersson, Marcin Dominik Pilinski, Edward Thiemann, Paul Withers, Meredith Elrod, Xiaohua Fang, Francisco González-Galindo, Stephen Bougher and Geoffrey Jenkins
Atmosphere 2020, 11(5), 521; https://doi.org/10.3390/atmos11050521 - 19 May 2020
Cited by 17 | Viewed by 3015
Abstract
In order to further evaluate the behavior of ionospheric variations at Mars, we investigate the Martian ionosphere-thermosphere (IT) perturbations associated with non-migrating thermal tides using over four years of Mars Atmosphere and Volatile Evolution (MAVEN) in situ measurements of the IT electron and [...] Read more.
In order to further evaluate the behavior of ionospheric variations at Mars, we investigate the Martian ionosphere-thermosphere (IT) perturbations associated with non-migrating thermal tides using over four years of Mars Atmosphere and Volatile Evolution (MAVEN) in situ measurements of the IT electron and neutral densities. The results are consistent with those of previous studies, namely strong correlation between the tidal perturbations in electron and neutral densities on the dayside at altitudes ~150–185 km, as expected from photochemical theory. In addition, there are intervals during which this correlation extends to higher altitudes, up to ~270 km, where diffusive transport of plasma plays a dominant role over photochemical processes. This is significant because at these altitudes the thermosphere and ionosphere are only weakly coupled through collisions. The identified non-migrating tidal wave variations in the neutral thermosphere are predominantly wave-1, wave-2, and wave-3. Wave-1 is often the dominant wavenumber for electron density tidal variations, particularly at high altitudes over crustal fields. The Mars Climate Database (MCD) neutral densities (below 300 km along the MAVEN orbit) shows clear tidal variations which are predominantly wave-2 and wave-3, and have similar wave amplitudes to those observed. Full article
(This article belongs to the Special Issue Observations and Measurements of the Martian Atmosphere)
Show Figures

Figure 1

16 pages, 930 KiB  
Article
Density Fluctuations in the Lower Thermosphere of Mars Retrieved From the ExoMars Trace Gas Orbiter (TGO) Aerobraking
by David Jesch, Alexander S. Medvedev, Francesco Castellini, Erdal Yiğit and Paul Hartogh
Atmosphere 2019, 10(10), 620; https://doi.org/10.3390/atmos10100620 - 15 Oct 2019
Cited by 15 | Viewed by 3177
Abstract
The upper atmosphere of Mars is constantly perturbed by small-scale gravity waves propagating from below. As gravity waves strongly affect the large-scale dynamics and thermal state, constraining their statistical characteristics is of great importance for modeling the atmospheric circulation. We present a new [...] Read more.
The upper atmosphere of Mars is constantly perturbed by small-scale gravity waves propagating from below. As gravity waves strongly affect the large-scale dynamics and thermal state, constraining their statistical characteristics is of great importance for modeling the atmospheric circulation. We present a new data set of density perturbation amplitudes derived from accelerometer measurements during aerobraking of the European Space Agency’s Trace Gas Orbiter. The obtained data set presents features found by three previous orbiters: the lower thermosphere polar warming in the winter hemisphere, and the lack of links between gravity wave activity and topography. In addition, the orbits allowed for demonstrating a very weak diurnal variability in wave activity at high latitudes of the southern winter hemisphere for the first time. The estimated vertical damping rates of gravity waves agree well with theoretical predictions. No clear anticorrelation between perturbation amplitudes and the background temperature has been found. This indicates differences in dissipation mechanisms of gravity waves in the lower and upper thermosphere. Full article
(This article belongs to the Special Issue Observations and Measurements of the Martian Atmosphere)
Show Figures

Figure 1

Back to TopTop