Results 11 to 20 of about 2,836 (255)

Strong Depletion of 13C in CO Induced by Photolysis of CO2 in the Martian Atmosphere, Calculated by a Photochemical Model

open access: yesThe Planetary Science Journal, 2023
The isotopic signature of atmospheric carbon offers a unique tracer for the history of the Martian atmosphere and the origin of organic matter on Mars. The photolysis of CO _2 is known to induce strong isotopic fractionation of the carbon between CO _2 ...
Tatsuya Yoshida   +9 more
doaj   +1 more source

Depletion of 13C in CO in the Atmosphere of Mars Suggested by ExoMars-TGO/NOMAD Observations

open access: yesThe Planetary Science Journal, 2023
The atmosphere of Mars is mainly composed by carbon dioxide (CO _2 ). It has been predicted that photodissociation of CO _2 depletes ^13 C in carbon monoxide (CO).
S. Aoki   +21 more
doaj   +1 more source

Soft X-Ray-induced Dimerization of Methane

open access: yesThe Astrophysical Journal, 2023
Carbon 1s excitation of methane, CH _4 , has been studied in the gas phase using the ion trap integrated with the photon–ion instrument at PETRA III/DESY and soft X-rays from the beamline P04.
S. Reinwardt   +10 more
doaj   +1 more source

Joint Application of Concentration and δ18O to Investigate the Global Atmospheric CO Budget

open access: yesAtmosphere, 2015
Most previous top-down global carbon monoxide (CO) budget estimates have used only concentration information and shown large differences in individual source estimates.
Keyhong Park   +3 more
doaj   +1 more source

Exploring and Validating Exoplanet Atmospheric Retrievals with Solar System Analog Observations

open access: yesThe Planetary Science Journal, 2023
Solar system observations that serve as analogs for exoplanet remote sensing data can provide important opportunities to validate ideas and models related to exoplanet environments.
Tyler D. Robinson, Arnaud Salvador
doaj   +1 more source

Spectroscopic detection and characterisation of planetary atmospheres

open access: yesEPJ Web of Conferences, 2011
Space based broadband infrared observations of close orbiting extrasolar giant planets at transit and secondary eclipse have proved a successful means of determining atmospheric spectral energy distributions and molecular composition.
Collier Cameron A.   +12 more
doaj   +1 more source

Nightside Ionospheric Structure and Composition on Mars Driven by Energetic Electron Precipitation

open access: yesThe Astrophysical Journal, 2023
Ionospheric chemistry plays an unexpectedly important role in the evolution of planetary habitability. This study is dedicated to a detailed modeling of the nightside Martian ionospheric structure and composition, a topic that has been poorly explored ...
Shiqi Wu   +6 more
doaj   +1 more source

Equatorial Waves and Superrotation in the Stratosphere of a Titan General Circulation Model

open access: yesThe Planetary Science Journal, 2023
We investigate the characteristics of equatorial waves associated with the maintenance of superrotation in the stratosphere of a Titan general circulation model.
Neil T. Lewis   +3 more
doaj   +1 more source

Polar vortices in planetary atmospheres [PDF]

open access: yesReviews of Geophysics, 2021
Among the great diversity of atmospheric circulation patterns observed throughout the solar system, polar vortices stand out as a nearly ubiquitous planetary-scale phenomenon. In recent years there have been significant advances in the observation of planetary polar vortices, culminating in the fascinating discovery of Jupiter's polar vortex clusters ...
Dann M. Mitchell   +6 more
openaire   +3 more sources

PlanetCARMA: A New Framework for Studying the Microphysics of Planetary Atmospheres

open access: yesAtmosphere, 2020
The Community Aerosol and Radiation Model for Atmospheres (CARMA) has been updated to apply to atmospheres of the Solar System outside of Earth. CARMA, as its name suggests, is a coupled aerosol microphysics and radiative transfer model and includes the ...
Erika Barth
doaj   +1 more source

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