Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere
Abstract 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. Our regolith transport simulations show that advective fluxes can...
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| Format: | Article |
| Language: | English |
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Wiley
2020-02-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2019GL085694 |
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| author | D. Viúdez‐Moreiras R. E. Arvidson J. Gómez‐Elvira C. Webster C. E. Newman P. Mahaffy A. R. Vasavada |
| author_facet | D. Viúdez‐Moreiras R. E. Arvidson J. Gómez‐Elvira C. Webster C. E. Newman P. Mahaffy A. R. Vasavada |
| author_sort | D. Viúdez‐Moreiras |
| collection | DOAJ |
| description | Abstract 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. Our regolith transport simulations show that advective fluxes can be relevant under Martian conditions and may drive the methane abundance detected by Mars Science Laboratory. Trace gas emissions would be highest in regions where winds interact with topography. Emissions in these regions may be further enhanced by time‐varying pressure fields produced by diurnal thermal tides and atmospheric turbulence. Trace gases such as methane should be emitted or produced from the first layers of regolith, or quickly transported to this region from a deeper reservoir through fractured media. |
| format | Article |
| id | doaj-art-4eba80af986949fa9f983564576e417d |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2020-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-4eba80af986949fa9f983564576e417d2025-08-20T03:10:10ZengWileyGeophysical Research Letters0094-82761944-80072020-02-01473n/an/a10.1029/2019GL085694Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the AtmosphereD. Viúdez‐Moreiras0R. E. Arvidson1J. Gómez‐Elvira2C. Webster3C. E. Newman4P. Mahaffy5A. R. Vasavada6Centro de Astrobiología (CSIC‐INTA) & National Institute for Aerospace Technology (INTA) Torrejón de Ardoz Madrid SpainDepartment of Earth and Planetary Sciences Washington University St. Louis MO USACentro de Astrobiología (CSIC‐INTA) & National Institute for Aerospace Technology (INTA) Torrejón de Ardoz Madrid SpainJet Propulsion Laboratory California Institute of Technology Pasadena CA USAAeolis Research Pasadena CA USAPlanetary Environments Laboratory NASA Goddard Space Flight Center Greenbelt MD USADepartment of Earth and Planetary Sciences Washington University St. Louis MO USAAbstract 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. Our regolith transport simulations show that advective fluxes can be relevant under Martian conditions and may drive the methane abundance detected by Mars Science Laboratory. Trace gas emissions would be highest in regions where winds interact with topography. Emissions in these regions may be further enhanced by time‐varying pressure fields produced by diurnal thermal tides and atmospheric turbulence. Trace gases such as methane should be emitted or produced from the first layers of regolith, or quickly transported to this region from a deeper reservoir through fractured media.https://doi.org/10.1029/2019GL085694Mars atmosphereregolith‐atmospheric interactionsregolith trace gas emissionsMartian methaneMars Science Laboratory |
| spellingShingle | D. Viúdez‐Moreiras R. E. Arvidson J. Gómez‐Elvira C. Webster C. E. Newman P. Mahaffy A. R. Vasavada Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere Geophysical Research Letters Mars atmosphere regolith‐atmospheric interactions regolith trace gas emissions Martian methane Mars Science Laboratory |
| title | Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere |
| title_full | Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere |
| title_fullStr | Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere |
| title_full_unstemmed | Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere |
| title_short | Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere |
| title_sort | advective fluxes in the martian regolith as a mechanism driving methane and other trace gas emissions to the atmosphere |
| topic | Mars atmosphere regolith‐atmospheric interactions regolith trace gas emissions Martian methane Mars Science Laboratory |
| url | https://doi.org/10.1029/2019GL085694 |
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