Results 41 to 50 of about 2,793,510 (386)
Mars' atmospheric neon suggests volatile-rich primitive mantle [PDF]
, 2021 Martian atmospheric neon (Ne) has been detected by Viking and also found as trapped gas in Martian meteorites, though its abundance and isotopic composition have not been well determined. Because the timescale of Ne loss via atmospheric escape estimated from recent measurements with MAVEN is short (0.6--1 $\times$ 10$^8$ years), the abundance and ...
arxiv +1 more source
The Ensemble Mars Atmosphere Reanalysis System (EMARS) Version 1.0
Geoscience Data Journal, 2019 The Ensemble Mars Atmosphere Reanalysis System (EMARS) dataset version 1.0 contains hourly gridded atmospheric variables for the planet Mars, spanning Mars Year (MY) 24 through 33 (1999 through 2017).
Steven J. Greybush +16 more
doaj +1 more source
The Mars system revealed by the Martian Moons eXploration mission
Earth, Planets and Space, 2022 Japan Aerospace Exploration Agency (JAXA) plans a Phobos sample return mission (MMX: Martian Moons eXploration). In this study, we review the related works on the past climate of Mars, its evolution, and the present climate and weather to describe the ...
Kazunori Ogohara +23 more
doaj +1 more source
A Lower Limit of Atmospheric Pressure on Early Mars Inferred from Nitrogen and Argon Isotopic Compositions [PDF]
, 2017 We examine the history of the loss and replenishment of the Martian atmosphere using elemental and isotopic compositions of nitrogen and noble gases. The evolution of the atmosphere is calculated by taking into consideration various processes: impact erosion and replenishment by asteroids and comets, atmospheric escape induced by solar radiation and ...
arxiv +1 more source
Moisture in the Atmosphere of Mars [PDF]
Nature, 1904 IN your issue of May 5 I see a note in the astronomical column on Mr. Lowell's theory of the Martian canals. It is perhaps not just to criticise it on so short a summary, but there is a point on which I should like to ask a question. If, as Mr. Lowell says, there is not sufficient moisture on the planet to produce vegetation, how does the water return ...
openaire +2 more sources
Kinetic Helicity in the Earth's atmosphere [PDF]
arXiv, 2023 An overview is given of the helicity of the velocity field (``kinetic'' helicity to distinguish it from the ``magnetic'' helicity used in magnetohydrodynamics, astrophysics, and solar physics; or simply \emph{helicity} in this Chapter) and of the role, which this concept plays in the modern research in atmospheric physics and atmospheric turbulence ...
arxiv
Hydrodynamic simulations of captured protoatmospheres around Earth-like planets [PDF]
2015, A&A, 576, 87, 2015 Young terrestrial planets, when they are still embedded in a circumstellar disk, accumulate an atmosphere of nebula gas. The evolution and eventual evaporation of the protoplanetary disk affect the structure and dynamics of the planetary atmosphere.
arxiv +1 more source
Mars and a Lunar Atmosphere [PDF]
Nature, 1912 IN NATURE, February 22, p. 565, reference is made to an interesting observation by Prof. Luther, of the Dusseldorf Observatory. The note states that he saw the half of the disc of Mars nearest the moon become green just before occultation on December 4, 1911, and he suggests that this may have been due to a lunar atmosphere. The time was 16h.
openaire +3 more sources
Using Spatial Data Science in Energy-Related Modeling of Terraforming the Martian Atmosphere
Energies, 2022 This paper proposes a methodology for numerical modeling of terraforming Mars’ atmosphere using high-energy asteroid impact and greenhouse gas production processes. The developed simulation model uses a spatial data science approach to analyze the Global
Piotr Pałka +2 more
doaj +1 more source
Properties and models of the Martian bow shock
地球与行星物理论评, 2021 Mars does not have a global magnetic field of the internal origin, thus, the solar wind plasma can interact directly with the upper atmosphere and the ionosphere and be shocked with the mass-loading and magnetic pileup processes.
Yifan Li +4 more
doaj +1 more source