Results 91 to 100 of about 26,803 (256)

Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere

Geophysical Research Letters, 2020
Advective fluxes influence methane and CO2 soil emissions into the atmosphere on Earth and may drive trace gas emissions in the Mars atmosphere. However, their relevance in the Martian regolith has not been evaluated to date.
D. Viúdez‐Moreiras, R. E. Arvidson, J. Gómez‐Elvira, C. Webster, C. E. Newman, P. Mahaffy, A. R. Vasavada   +6 more
doaj   +1 more source

Very high elevation water ice clouds on Mars: Their morphology and temporal behavior [PDF]

Quantitative analysis of Viking images of the martian planetary limb has uncovered the existence and temporal behavior of water ice clouds that form between 50 and 90 km elevation.
Jaquin, Fred
core   +1 more source

The Usefulness of NotebookLM's Audio Overview for Planetary Scientists

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract The availability and use of artificial intelligence (AI) tools has increased substantially in recent years. NotebookLM was released in 2023 and is an AI tool with the capability to generate text summaries of input material. In 2024, an “Audio Overviews” feature was released that can generate podcast‐style audio files of the summarized material.
Ian T. W. Flynn, Sean I. Peters
wiley   +1 more source

Long-term variability of CO2 and O in the Mars upper atmosphere from MRO radio science data [PDF]

, 2015
We estimate the annual variability of CO2 and O partial density using approximately 6years of Mars Reconnaissance Orbiter (MRO) radio science data from August 2006 to January 2012, which cover three full Martian years (from the northern hemisphere summer
Fricke, Susan K., Genova, Antonio, Goossens, Sander, Lemoine, Frank G., Mazarico, Erwan, Smith, David E., Zuber, Maria T.   +6 more
core   +1 more source

Significant Amplification of Turbulent Energy Dissipation Through the Shock Transition at Mars

Geophysical Research Letters, Volume 52, Issue 21, 16 November 2025.
Abstract Turbulence is fundamental to energy transfer across scales in space and astrophysical plasmas. Bow shock interactions have long been hypothesized to significantly modify turbulence in planetary environments, yet the quantification of such effects and their parametric dependencies remain largely unaddressed.
Wence Jiang, Hui Li, Nahuel Andrés, Lina Hadid, Daniel Verscharen, Chi Wang   +5 more
wiley   +1 more source

APXS Derived Geochemistry of Shallow Water Lens Bodies Within the Mirador Formation, Gale Crater, Mars—Evidence for Intermittent Wet Periods and Implications for the Water Record

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract The Mount Sharp group in Gale crater is typically interpreted to record a progressive change (with increasing elevation) from wetter fluvio‐lacustrine environments to dry, eolian environments. This shift has been linked to orbital evidence for a global change in environmental and depositional conditions leading to an overall drying out of Mars.
C. D. O’Connell‐Cooper, L. M. Thompson, J. G. Spray, S. J. VanBommel, J. A. Berger, R. Gellert, G. Caravaca, D. Fey, M. A. McCraig, N. I. Boyd, A. B. Bryk, W. E. Dietrich, S. Gupta, A. Roberts, A. Yen   +14 more
wiley   +1 more source

Predicted Diurnal Variation of the Deuterium to Hydrogen Ratio in Water at the Surface of Mars Caused by Mass Exchange with the Regolith [PDF]

, 2019
Regolith on Mars exchanges water with the atmosphere on a diurnal basis and this process causes significant variation in the abundance of water vapor at the surface. While previous studies of regolith-atmosphere exchange focus on the abundance, recent in-
Hu, Renyu
core   +2 more sources

Effects of Mineralogy and UV Radiation on the Detectability of Amino Acids Within the Martian Regolith: The Case for a Combined Chromatographical and Spectroscopical Approach

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract Amino acids are an extremely heterogeneous group of biomolecules essential for life on Earth. Their biosignatures are expected to be easily degraded on the Martian surface as the absence of a thick atmosphere and a magnetosphere leads to most of the solar radiation directly reaching its surface.
Miguel Arribas Tiemblo, Pedro Rayo, María‐Paz Martín‐Redondo, Felipe Gómez   +3 more
wiley   +1 more source

Seasonal Water "Pump" in the Atmosphere of Mars: Vertical Transport to the Thermosphere

, 2019
We present results of simulations with the Max Planck Institute general circulation model (MPI-MGCM) implementing a hydrological cycle scheme. The simulations reveal a seasonal water "pump" mechanism responsible for the upward transport of water vapor ...
Hartogh, Paul, Medvedev, Alexander S., Rodin, Alexander V., Shaposhnikov, Dmitry S.   +3 more
core   +1 more source

Hypotheses for near-surface exchange of methane on Mars [PDF]

, 2016
The Curiosity rover recently detected a background of 0.7 ppb and spikes of 7 ppb of methane on Mars. This in situ measurement reorients our understanding of the Martian environment and its potential for life, as the current theories do not entail any ...
Bloom, A. Anthony, Gao, Peter, Hu, Renyu, Miller, Charles E., Yung, Yuk L.   +4 more
core   +3 more sources