Results 81 to 90 of about 1,972 (193)

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

J Geophys Res Planets, 2023
Sánchez-Lavega A, Del Rio-Gaztelurrutia T, Hueso R, Juárez MT, Martínez GM, Harri AM, Genzer M, Hieta M, Polkko J, Rodríguez-Manfredi JA, Lemmon MT, Pla-García J, Toledo D, Vicente-Retortillo A, Viúdez-Moreiras D, Munguira A, Tamppari LK, Newman C, Gómez-Elvira J, Guzewich S, Bertrand T, Apéstigue V, Arruego I, Wolff M, Banfield D, Jaakonaho I, Mäkinen T.   +26 more
europepmc   +1 more source

QEUV vs. Other EUV Proxies: A Re‐Evaluation of Solar EUV Proxies for Thermospheric and Space Weather Investigations

Space Weather, Volume 24, Issue 7, July 2026.
Abstract F10.7, Mg II, and F30 are widely used proxies for variability in solar Extreme UltraViolet (EUV, 5–120 nm) irradiance. An alternative proxy for solar EUV variability is QEUV, an indirect measure of total solar EUV irradiance, retrieved from observations of Earth's Far UltraViolet (FUV, 120–300 nm) airglow and from empirically modeled solar EUV
F. I. Laskar, W. K. Peterson, P. C. Chamberlin, R. W. Eastes, T. E. Berger, K. R. Greer, J. S. Evans, A. W. Yau   +7 more
wiley   +1 more source

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

Earth Space Sci, 2021
Ruan T, Young RMB, Lewis SR, Montabone L, Valeanu A, Read PL.   +5 more
europepmc   +1 more source

Groundwater Connectivity and Buffering in Western Australian Hypersaline Lakes: Implications for Late‐Stage Martian Lacustrine Systems

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract Thousands of saline to hypersaline lakes exist across the Yilgarn Craton in Western Australia, representing potential Mars analogs with diverse and varying salinity, pH, and oxygen conditions that remain poorly constrained. Here, we report geochemical trends in lake waters that vary across wet‐dry cycles as well as with regional location and ...
T. A. Plattner, B. E. Schmidt, N. M. Fernandez, P. T. Doran, M. A. Birmingham, J. M. Weber, A. Celestian, E. D. Ingall, J. S. Bowman, S. M. Som, A. Odenheimer, T. Bornholdt, C. Sephus, H. T. Jamison, K. Russo, S. Buessecker, L. A. Fisher, B. Klempay, E. R. Paris, E. J. Skoog, M. M. Weng, C. Pozarycki, A. T. Schartup, C. E. Carr, J. J. Wray, F. Rivera‐Hernández, E. Quartini   +26 more
wiley   +1 more source

New MAVEN NGIMS Mars Thermosphere Temperature Database for Short Term Variability and Long Term Trends

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract Current Mars thermospheric temperatures databases have course temporal resolution due to either a lack of data or a need to average over several orbits of data, preventing the study of short‐term, rapid changes to the Mars thermosphere. In this study, we present a new Mars thermosphere temperature database derived from individual orbits of ...
N. B. Pickett, M. Felici, N. Jones, D. Pawlowski, P. Withers, M. Benna, S. Curry   +6 more
wiley   +1 more source

Evolution of Sulfur Concentration in the Deep Earth During the Proto‐Earth Growth: First‐Principles Study on the Sulfur Partitioning Between Metal and Silicate at High Pressure and Temperature

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Sulfur (S) is one of the promising light elements that can explain the density deficit of the core. The degree of siderophile nature of S under high pressure and temperature (P,T) is the key to estimating the S content in the core. However, a significant discrepancy between the metal‐silicate partition coefficient of S extrapolated from ...
K. Itoh, T. Tsuchiya
wiley   +1 more source

Ice clouds in the Martian atmosphere

Journal of the Japanese Society of Snow and Ice, 2005
近年の探査衛星観測により火星の気象学的観測データの量が飛躍的に増加したことから,火星大気の氷雲の科学を定量的に論ずることが可能となってきた.火星のH2O氷雲は受動的トレーサであるため,その分布を調べることで直接観測が困難な火星大気の流れ場に関する情報を得ることができる.従来直接観測が困難であった極夜のCO2氷雲は,マーズグローバルサーベイヤーのレーザー高度計によりその存在が初めて明らかとなった.CO2氷雲は過去の火星の気候を考える上でも重要な要素である.過去に火星で実現していた温暖な気候を維持するには,厚いCO2大気にともなうCO2氷雲の温室効果が寄与していたのではないかと考えられているからである.CO2氷雲の形成過程と消散係数などの放射パラメータを調べることにより ...
openaire   +2 more sources

PyGMT: Bridging Python and the Generic Mapping Tools for Geospatial Visualization and Analysis

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract PyGMT is a free and open‐source Python library that provides a high‐level interface to the Generic Mapping Tools (GMT), a widely used command‐line toolset for geospatial data processing, analysis, and visualization in the Earth, ocean, and planetary sciences.
Dongdong Tian, Yvonne Fröhlich, Wei Ji Leong, Michael Grund, William Schlitzer, Max Jones, Leonardo Uieda, Joaquim Manuel Freire Luis   +7 more
wiley   +1 more source

A hybrid origin for the Martian atmosphere

Geochemical Perspectives Letters
The Martian isotopic record displays a dichotomy in volatile compositions. Interior volatiles from the mantle record a chondritic heritage (e.g., H, N, Kr, Xe) whereas the atmospheric reservoir of Kr and Xe - which do not currently experience escape - record heritage from a solar-like source.
Pahlevan, Kaveh, Schaefer, Laura, Porcelli, Don   +2 more
openaire   +2 more sources

Crosstalk in O2+ and CO2+ Channel Groups of MAVEN/NGIMS Ion Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The Neutral Gas and Ion Mass Spectrometer (NGIMS) onboard the Mars Atmosphere and Volatile EvolutioN mission has provided critical insights into the composition and isotopic structure of Mars' ionosphere. However, significant model‐observation discrepancies of densities of some ion species suggest the presence of crosstalk, that is ...
Long Cheng, Erik Vigren, A. R. Poppe
wiley   +1 more source