Results 121 to 130 of about 59,566 (259)

Global Distribution and Seasonality of Martian Atmospheric HCl Explained Through Heterogeneous Chemistry

open access: yesGeophysical Research Letters, Volume 52, Issue 6, 28 March 2025.
Abstract Recent observations from the ExoMars Trace Gas Orbiter (TGO) have revealed the presence of hydrogen chloride (HCl) in the martian atmosphere. HCl shows strong seasonality, primarily appearing during Mars' perihelion period before decreasing faster than projected from photolysis and gas‐phase chemistry.
Paul M. Streeter   +6 more
wiley   +1 more source

Propagation and Periodicity of Mars's Northern Annular Mode Modulates the Dust Cycle

open access: yesGeophysical Research Letters, Volume 52, Issue 6, 28 March 2025.
Abstract We document the propagation of annular modes—zonally symmetric patterns of variability—in Mars's atmosphere using a reanalysis dataset. Mars's Northern Annular Mode (MNAM) sees anomalies of zonal‐mean zonal wind emerge near the subtropics and migrate poleward with a period of ∼ ${\sim} $150 days, similarly to Earth's Southern Annular Mode. The
J. Michael Battalio   +3 more
wiley   +1 more source

Meteoroid Fragmentation in the Martian Atmosphere and the Formation of Crater Clusters. [PDF]

open access: yesJ Geophys Res Planets, 2022
Collins GS   +8 more
europepmc   +1 more source

Role of Synthetic Biofilms in Bed Evolution and the Formation of Sedimentary Structures

open access: yesGeophysical Research Letters, Volume 52, Issue 6, 28 March 2025.
Abstract Microbes are known to shape topographies; however, mechanisms of biofilm‐sediment interactions and the dynamic evolution of biofilm‐covered bedforms remain poorly understood. Here, we explore the effects of synthetic biofilms on the geometry and temporal evolution of underwater bedforms through flume experiments.
Willian R. Assis   +2 more
wiley   +1 more source

Mars 2020 Perseverance Rover Studies of the Martian Atmosphere Over Jezero From Pressure Measurements. [PDF]

open access: yesJ Geophys Res Planets, 2023
Sánchez-Lavega A   +26 more
europepmc   +1 more source

Assimilation of Both Column- and Layer-Integrated Dust Opacity Observations in the Martian Atmosphere. [PDF]

open access: yesEarth Space Sci, 2021
Ruan T   +5 more
europepmc   +1 more source

Behaviors of Martian CO2-driven dry climate system and conditions for atmospheric collapses [PDF]

open access: yesarXiv
The present Martian climate is characterized by a cold and dry environment with a thin atmosphere of carbon dioxides (CO2). In such conditions, the planetary climate and habitability are determined by the distribution of CO2 between exchangeable reservoirs, that is the atmosphere, ice caps, and regolith.
arxiv  

Evaluation of thermal insulation materials [PDF]

open access: yes, 1973
Data was obtained on silicone-bonded fiberglass, isocyanurate foam, and two dozen other insulators. Materials were selected to withstand heat sterilization, outer space, and the Martian atmosphere.
Conti, J. C.   +3 more
core   +1 more source

Magnetosonic Waves Driven by Maxwellian Ring Protons in the Martian Upper Ionosphere

open access: yesGeophysical Research Letters, Volume 52, Issue 5, 16 March 2025.
Abstract Magnetosonic (MS) waves can be generated by hot Maxwellian ring protons locally within the Martian upper ionosphere, characterized by a weak ambient magnetic field and the presence of cold plasma abundant in heavier ions. A comprehensive study on the resonant instabilities of MS waves making use of the derived growth rates show that ring ...
Amrutha   +3 more
wiley   +1 more source

Mariner 4 and the atmosphere of Mars [PDF]

open access: yes
Interpretation of data on Martian atmosphere obtained from Mariner
Johnson, F. S.
core   +1 more source

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