Results 21 to 30 of about 736,131 (304)

Mie scattering and the Martian atmosphere [PDF]

open access: yesSymposium - International Astronomical Union, 1971
It has been suggested that the discrepancy between radio occultation determinations of the Martian atmospheric surface pressure (3.8 to 7 mb) and those deduced from optical polarization measurements and a simple Rayleigh atmosphere model (about 10 mb) are the results of sub-micron sized aerosols in the Martian atmosphere.
Walter G. Egan, Kenneth M. Foreman
openaire   +1 more source

Laser Ablation Sampling With Low-Power Plasma: A LA-MIP-MS Instrument for Spaceflight. [PDF]

open access: yesRapid Commun Mass Spectrom
ABSTRACT Rationale Inductively coupled plasma (ICP) is a commonly used ion source for mass spectrometry‐based chemical analysis of a wide range of materials. Traditional ICP ion sources use high power (> 1000 W) and significant gas flow (> 10 L/min), rendering them unsuitable for spaceflight, as they are too resource‐intensive for planetary spacecraft.
Farcy BJ   +11 more
europepmc   +2 more sources

Quantification of Carbonates, Oxychlorines, and Chlorine Generated by Heterogeneous Electrochemistry Induced by Martian Dust Activity

open access: yesGeophysical Research Letters, 2023
Heterogeneous electrochemistry induced by Martian dust activity is an important type of atmosphere‐surface interaction that affects geochemical processes at the Martian surface and in the Martian atmosphere.
Alian Wang   +6 more
doaj   +1 more source

Optimal Technology Allocation of in the Life Support Subsystem with Maximum Reliability [PDF]

open access: yesفناوری در مهندسی هوافضا, 2023
The atmosphere of the Red Planet or Mars contains 95% of carbon dioxide, 3% of nitrogen, 1.6% of argon and only a small amount of oxygen, and in terms of concentration is about one percent of the planet's atmosphere, which makes it virtually impossible ...
Milad Mahmoudi   +2 more
doaj   +1 more source

Ionization Efficiency in the Dayside Martian Upper Atmosphere [PDF]

open access: bronze, 2018
Jun Cui   +10 more
openalex   +2 more sources

Alternate oscillations of Martian hydrogen and oxygen upper atmospheres during a major dust storm

open access: yesNature Communications, 2022
Dust storms on Mars drive water escape to space. Here, the authors show the impact Martian dust storms have on the abundance of atmospheric hydrogen and oxygen, and how this helps to overall oxidize the Martian atmosphere.
Kei Masunaga   +13 more
doaj   +1 more source

Anaerobic Photosynthesizers and their Potential to Create a Biosphere on the Surface of the Red Planet [PDF]

open access: yesفناوری در مهندسی هوافضا, 2023
The atmosphere of the Red Planet or Mars contains 95% of carbon dioxide, 3% of nitrogen, 1.6% of argon and only a small amount of oxygen, and in terms of concentration is about one percent of the planet's atmosphere, which makes it virtually impossible ...
Fateme Mousavi
doaj   +1 more source

Carbonate formation events in ALH 84001 trace the evolution of the Martian atmosphere. [PDF]

open access: yesProc Natl Acad Sci U S A, 2015
Shaheen R   +4 more
europepmc   +2 more sources

Global distribution and climate sensitivity of the tropical montane forest nitrogen cycle

open access: yesNature Communications, 2022
Dust storms on Mars drive water escape to space. Here, the authors show the impact Martian dust storms have on the abundance of atmospheric hydrogen and oxygen, and how this helps to overall oxidize the Martian atmosphere.
Justin D. Gay   +2 more
doaj   +1 more source

Simulation of Transient Topside Layer in the Martian Ionosphere

open access: yesRemote Sensing, 2023
Many Mars missions, e.g., Mariner, Viking, Mars Global Surveyor (MGS), Mars Express (MEX), and Mars Atmosphere and Volatile Evolution (MAVEN), have been launched to study the Martian atmosphere.
Chunhua Jiang, Rong Tian, Lehui Wei
doaj   +1 more source

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