Results 271 to 280 of about 736,131 (304)

The vertical structure of CO in the Martian atmosphere from the ExoMars Trace Gas Orbiter

Nature Geoscience, 2021
K. Olsen, F. Lefèvre, F. Montmessin, A. Fedorova, A. Trokhimovskiy, L. Baggio, O. Korablev, J. Alday, C. Wilson, F. Forget, D. Belyaev, A. Patrakeev, A. Grigoriev, A. Shakun   +13 more
semanticscholar   +1 more source

On the abundance of NO2 in the Martian atmosphere

Icarus, 1975
Abstract Spectrophotometric scans of Mars and the Moon in the region 4000–5000 A were obtained and ratioed. No evidence of any absorption greater than 3% is visible in the Martian spectrum. Using our own laboratory spectra of NO 2 as well as the published work of Hall and Blacet (1952) we confirm Marshall's (1964) upper limit of 8 μm atmospheres
Tobias Owen, Thomas Scattergood, Jerry H. Woodman   +2 more
openaire   +1 more source

The Martian atmosphere: Some unanswered questions

Journal of Molecular Evolution, 1979
The study of the Martian atmosphere and its significance for the possible origin of life on Mars is still very incomplete. Further investigations are needed to define the total volatile inventory, the early history of the atmosphere, and the relationship of the atmosphere to the question of indigenous life.
openaire   +2 more sources

Coupling and interactions across the Martian whole atmosphere system

Nature Geoscience, 2023
Erdal Yiğit
semanticscholar   +1 more source

Atmospheric Tides at High Latitudes in the Martian Upper Atmosphere Observed by MAVEN and MRO

Journal of Geophysical Research: Space Physics, 2019
Global‐scale waves have been seen throughout the Martian atmosphere and can achieve significant amplitude at higher altitudes. Previous observations of the upper atmosphere have also revealed wavenumber‐3 signatures with significant amplitudes that have ...
S. England, Guiping Liu, Aishwarya Kumar, P. Mahaffy, M. Elrod, M. Benna, S. Jain, J. Deighan, N. Schneider, W. McClintock, J. Evans   +10 more
semanticscholar   +1 more source

Photochemistry of the Martian Atmosphere

1986
A problem and ways to solve it. Consider a problem of the calculation of ionospheric composition with the neutral upper atmospheric composition being known.
openaire   +1 more source

Absorption of sound in the Martian atmosphere

The Journal of the Acoustical Society of America, 2001
Future missions to the planet Mars might include microphones to listen for sounds in the tenuous Martian atmosphere. The chemical composition of the atmosphere is well established by previous missions and ground based observations. The dominant constituent is CO2 with a minor amount of N2 and Argon and smaller amounts of H2O.
Henry E. Bass, James P. Chambers
openaire   +1 more source

Low palaeopressure of the martian atmosphere estimated from the size distribution of ancient craters

, 2013
The decay of the martian atmosphere—which is dominated by carbon dioxide—is a component of the long-term environmental change on Mars from a climate that once allowed rivers to flow to the cold and dry conditions of today.
E. Kite, Jean‐Pierre Williams, A. Lucas, O. Aharonson   +3 more
semanticscholar   +1 more source

Change in the Martian Atmosphere

1999
There are several lines of evidence that the atmosphere of Mars has significantly evolved over the history of the planet. Because Mars does not have a strong intrinsic magnetic field, the atmosphere is eroded by interactions with the solar wind. Conditions in the early solar-system significantly enhanced this loss, notably the component due to solar ...
openaire   +1 more source

Dawn‐Dusk Asymmetries in the Martian Upper Atmosphere

Journal of Geophysical Research: Planets, 2019
In this paper, we report the first comprehensive observations of local time asymmetries in densities and scale heights (temperatures) of the Martian upper atmosphere (between 150 and 300 km) measured by the Mars Atmosphere and Volatile Evolution mission ...
N. Gupta, N. Venkateswara Rao, U. Kadhane   +2 more
semanticscholar   +1 more source